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Gonophores Stock Photos and Images
RMREA1X0–. Contributions to Canadian biology. Marine biology; Natural history. No. s. Garveia grownlandica. Family BOUGAIKVILLID^, Trophosome. Hydranths fusiform or clavate; proboscis conical or dome-shaped; one whorl of short filiform tentacles. Gonosome. Gonophores producing free medusae. Genus Bougainvillia. Trophosonve. Perisarc well developed on the branches as well as on the main stem. Gonosome. Gonophores supported on short pedicels; medusae with four radial canals and four clusters of tentacles. Bougainvillia carolinensis (McCrady). Trophosome. Colony irregularly branched, 30 cm. high; branches
RMREA1TT–. Contributions to Canadian biology. Marine biology; Natural history. UYDROmS OF EASTERN CANADA 147 Eudendrnim ramosum (Linna?up). TropJiosome. Stem slightly fascicled, much and irregularly branched, height 15 cm.; hydrauth pedicels usually vertically placed on the pinnately arranged branches; annulations at base of branches and pedicel>. Gonosonhe. Gonophores borne at the base of the hydranth or some distance down the pedicels; hydranths normal or reduced in si'ze. Colour. Hydranths and male gonophores vermilion or pink; female gonophores bright orange-red.. No. 15. EudendriiDii ramosum. E
RMREA1XW–. Contributions to Canadian biology. Marine biology; Natural history. 142 DEPARTMENT OF THE NAVAL SERTICB Family DIOORYNID^. Trophosome. Colony branched or unbranched; hydranths with a single whorl of filiform tentacles. Gonosome. Gonophores producing free-swimming, ciliated sporosacs, each with two filiform, ciliated tentacles. Genus Dicoryne. Trophosome. Stolon reticular; stem unbranched or branched; hydranths with a single whorl of filiform tentacles; proboscis conical. Gonosome. Gonophores borne on aborted hydranths, from the stem or stolon; sporosacs, ciliated, free-swimming, with two cil
![. Contributions to Canadian biology. Marine biology; Natural history. No. 17. Ilydractinia echinata. Family MYRIOTHELID^. " Polypites solitary, with very numerous, minute, capitate tentacula scattered over the body " (Hincks). Genus Myriothela. Trophosome. " Polypites solitary, cylindrical, terminating above in a conical proboscis, springing from an adherent base, which is clothed with a chitinous poly- pary; tentacles very small, capitate, covering the greater portion of the body" (Hincks). Gonosome. " Gonophores borne on coryniform processes, clustering around the ba Stock Photo](https://c8.alamy.com/comp/RE86RJ/contributions-to-canadian-biology-marine-biology-natural-history-no-17-ilydractinia-echinata-family-myriothelid-quot-polypites-solitary-with-very-numerous-minute-capitate-tentacula-scattered-over-the-body-quot-hincks-genus-myriothela-trophosome-quot-polypites-solitary-cylindrical-terminating-above-in-a-conical-proboscis-springing-from-an-adherent-base-which-is-clothed-with-a-chitinous-poly-pary-tentacles-very-small-capitate-covering-the-greater-portion-of-the-bodyquot-hincks-gonosome-quot-gonophores-borne-on-coryniform-processes-clustering-around-the-ba-RE86RJ.jpg ". Contributions to Canadian biology. Marine biology; Natural history. No. 17. Ilydractinia echinata. Family MYRIOTHELID^. " Polypites solitary, with very numerous, minute, capitate tentacula scattered over the body " (Hincks). Genus Myriothela. Trophosome. " Polypites solitary, cylindrical, terminating above in a conical proboscis, springing from an adherent base, which is clothed with a chitinous poly- pary; tentacles very small, capitate, covering the greater portion of the body" (Hincks). Gonosome. " Gonophores borne on coryniform processes, clustering around the ba Stock Photo")
RMRE86RJ–. Contributions to Canadian biology. Marine biology; Natural history. No. 17. Ilydractinia echinata. Family MYRIOTHELID^. " Polypites solitary, with very numerous, minute, capitate tentacula scattered over the body " (Hincks). Genus Myriothela. Trophosome. " Polypites solitary, cylindrical, terminating above in a conical proboscis, springing from an adherent base, which is clothed with a chitinous poly- pary; tentacles very small, capitate, covering the greater portion of the body" (Hincks). Gonosome. " Gonophores borne on coryniform processes, clustering around the ba
RMRGCJ52–. Bulletin of the United States Fish Commission. Fisheries -- United States; Fish-culture -- United States. 358 BULLETIN OF THE BUREAU OF FISHERIES. Gonosome—Gonophores appear both on the stolon and on the stem borne on short annulated pedicels. The gonangia are oblong-oval in shape with the opening occupying the greater part of the upper surface. Distribution.—On seaweed floating in Beaufort Harbor. The gonosome has not been described hitherto. JIany gonangia were present on this material but almost all were empty. Some of them had two or three medusae but they were not in a good state of pre
![. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 252 CHAS. W. HARGITT. no signs of the development of gonads, a condition almost certain to have been found in case the gonophores remain sessile. The following diagnostic characters will serve to distinguish the species, at least so far as the hydroid phase is concerned, for which the name Syncoryne linvillei is proposed : Trophosome. — Colony growing in tufts, sparingly branched, to a height of 15 to 30 mm., and with the same general aspects as characterize 6". mirabilis Ag. Hydranths vasiform, with cone-. '.I .V* &quo Stock Photo](https://c8.alamy.com/comp/RHRA2P/the-biological-bulletin-biology-zoology-biology-marine-biology-252-chas-w-hargitt-no-signs-of-the-development-of-gonads-a-condition-almost-certain-to-have-been-found-in-case-the-gonophores-remain-sessile-the-following-diagnostic-characters-will-serve-to-distinguish-the-species-at-least-so-far-as-the-hydroid-phase-is-concerned-for-which-the-name-syncoryne-linvillei-is-proposed-trophosome-colony-growing-in-tufts-sparingly-branched-to-a-height-of-15-to-30-mm-and-with-the-same-general-aspects-as-characterize-6quot-mirabilis-ag-hydranths-vasiform-with-cone-i-v-quo-RHRA2P.jpg ". The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 252 CHAS. W. HARGITT. no signs of the development of gonads, a condition almost certain to have been found in case the gonophores remain sessile. The following diagnostic characters will serve to distinguish the species, at least so far as the hydroid phase is concerned, for which the name Syncoryne linvillei is proposed : Trophosome. — Colony growing in tufts, sparingly branched, to a height of 15 to 30 mm., and with the same general aspects as characterize 6". mirabilis Ag. Hydranths vasiform, with cone-. '.I .V* &quo Stock Photo")
RMRHRA2P–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 252 CHAS. W. HARGITT. no signs of the development of gonads, a condition almost certain to have been found in case the gonophores remain sessile. The following diagnostic characters will serve to distinguish the species, at least so far as the hydroid phase is concerned, for which the name Syncoryne linvillei is proposed : Trophosome. — Colony growing in tufts, sparingly branched, to a height of 15 to 30 mm., and with the same general aspects as characterize 6". mirabilis Ag. Hydranths vasiform, with cone-. '.I .V* &quo
RMRE9HN0–. Contributions to Canadian biology. Marine biology; Natural history. No. 41. Clytia noliforviis. Genus Eucopella. Trophosome. Stem unbranched; hydrotheca with very thick wall and entire margin. Gonosome. Gonophores producing large medusoid structures of elongated dome- shape, without mouth or digestive cavity. Eucopella caliculata (Hincks). Trophosome. Stem unbranched, varying in length, slightly wavy or annulated, with a distinct double annulation below the hydrotheca; hydrotheca with very thick wall and entire margin. Gonosome. Gonangium large, irregularly obovate, the distal end somewhat r
RMRMK08E–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 3o8 ANNALS OF THE SOUTH AFRICAN MUSEUM sion of perisarc sometimes present over the base. Young hydranths have a single verticil of about 8 tentacles, older ones have a second verticil of smaller tentacles developing slightly proximal to the first and alternating with them. Gonophores arising separately from the hydrorhiza on slender pedicels, developing into free medusae. The young gonophore is pear-shaped, flattened at the summit and narrowing towards the base where it merges gradually into the pedi
RMREA1W1–. Contributions to Canadian biology. Marine biology; Natural history. No. 13, Eudendrium dispar. Eudendrium rameum (Pallas) Trophosome. Stem large, fascicled, much and irregularly branched, large branches fascicled; stem and main branches, smooth or but slightly wrinkled or annulated; small branches annulated proximally; pedicels annulated throughout. Gonosome. Gonophores borne at the base of hydranths that are normal or not entirely aborted. Colour. Stem dark brown; hydranths reddish; female gonophores yellow.. No. 14, Eudendrium rameum.. Please note that these images are extracted from scann
RMRHR8R5–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. HYDROIDS OF WOODS HOLE. 383 distinguishable. Hence such organs as tentacles, gonophores, etc., which afford important specific characters, were wholly lacking. I had at first attributed this condition to bad preserva- tion ; but collections made at two subsequent seasons, in each case care being taken to preserve by approved methods, have convinced me to the contrary. It seems highly probable that this hydroid during the summer season is in a state of suspended animation, so to speak ; a condition quite common among hy- droi
![. A manual of zoology for the use of students : with a general introduction on the principles of zoology . Zoology. CCELENTERATA: HYDROZOA. 87 In certain Corynida, however, we meet with a still higher form of structure, the gonophores being now said to be " medusoid." In these cases the generative bud is primitively a simple sacâsuch as the " sporosac "âbut ultimately devel- ops itself into â a much more complicated structure. The gonophore (fig. 13, <r) is now found to be composed of a bell- shaped disc, termed the " gonocalyx," which is attached by its base t Stock Photo](https://c8.alamy.com/comp/RDKMYC/a-manual-of-zoology-for-the-use-of-students-with-a-general-introduction-on-the-principles-of-zoology-zoology-ccelenterata-hydrozoa-87-in-certain-corynida-however-we-meet-with-a-still-higher-form-of-structure-the-gonophores-being-now-said-to-be-quot-medusoidquot-in-these-cases-the-generative-bud-is-primitively-a-simple-sacsuch-as-the-quot-sporosac-quotbut-ultimately-devel-ops-itself-into-a-much-more-complicated-structure-the-gonophore-fig-13-ltr-is-now-found-to-be-composed-of-a-bell-shaped-disc-termed-the-quot-gonocalyxquot-which-is-attached-by-its-base-t-RDKMYC.jpg ". A manual of zoology for the use of students : with a general introduction on the principles of zoology . Zoology. CCELENTERATA: HYDROZOA. 87 In certain Corynida, however, we meet with a still higher form of structure, the gonophores being now said to be " medusoid." In these cases the generative bud is primitively a simple sacâsuch as the " sporosac "âbut ultimately devel- ops itself into â a much more complicated structure. The gonophore (fig. 13, <r) is now found to be composed of a bell- shaped disc, termed the " gonocalyx," which is attached by its base t Stock Photo")
RMRDKMYC–. A manual of zoology for the use of students : with a general introduction on the principles of zoology . Zoology. CCELENTERATA: HYDROZOA. 87 In certain Corynida, however, we meet with a still higher form of structure, the gonophores being now said to be " medusoid." In these cases the generative bud is primitively a simple sacâsuch as the " sporosac "âbut ultimately devel- ops itself into â a much more complicated structure. The gonophore (fig. 13, <r) is now found to be composed of a bell- shaped disc, termed the " gonocalyx," which is attached by its base t
RMRE86R6–. Contributions to Canadian biology. Marine biology; Natural history. Family CORY^IOEPHID^. Trophosome. Zooids solitary, large; hydranths with a proximal and a distal set of filiform tentacles. Gonosome. Gonophores producing free medusae with four radial canals and three of the four tentacles aborted or very much reduced. Genus Corymorpha. Trophosome. Pedicel with perisarc represented by a thin pellicle; tubtdar, fleshy processes growing from the pedicel near the base; hydranth abruptly distinct from the pedicel; proximal tentacles longer than distal; distal set in several continguous rows. Go
![. Bulletin of the British Museum (Natural History). . Fig. 29. Titrritopsis nutricola Brooks : a colonial Clavid hydroid in which the medusa buds are borne directly on the hydrocauh (redrawn from Brooks, 1883). Fig. 30. Rhizogeton fusiformis Agassiz : hydranth and polypoid male gonophores (simplified from Agassiz, 1862). In the family Hydractiniidae there is a similar range of positions, although species like " Stylactella " elsae-oswaldae Stechow which have gonophores arising from the stolons have not been included in the table. Any nutritive polyp may become a reproductive one in P Stock Photo](https://c8.alamy.com/comp/RGK033/bulletin-of-the-british-museum-natural-history-fig-29-titrritopsis-nutricola-brooks-a-colonial-clavid-hydroid-in-which-the-medusa-buds-are-borne-directly-on-the-hydrocauh-redrawn-from-brooks-1883-fig-30-rhizogeton-fusiformis-agassiz-hydranth-and-polypoid-male-gonophores-simplified-from-agassiz-1862-in-the-family-hydractiniidae-there-is-a-similar-range-of-positions-although-species-like-quot-stylactella-quot-elsae-oswaldae-stechow-which-have-gonophores-arising-from-the-stolons-have-not-been-included-in-the-table-any-nutritive-polyp-may-become-a-reproductive-one-in-p-RGK033.jpg ". Bulletin of the British Museum (Natural History). . Fig. 29. Titrritopsis nutricola Brooks : a colonial Clavid hydroid in which the medusa buds are borne directly on the hydrocauh (redrawn from Brooks, 1883). Fig. 30. Rhizogeton fusiformis Agassiz : hydranth and polypoid male gonophores (simplified from Agassiz, 1862). In the family Hydractiniidae there is a similar range of positions, although species like " Stylactella " elsae-oswaldae Stechow which have gonophores arising from the stolons have not been included in the table. Any nutritive polyp may become a reproductive one in P Stock Photo")
RMRGK033–. Bulletin of the British Museum (Natural History). . Fig. 29. Titrritopsis nutricola Brooks : a colonial Clavid hydroid in which the medusa buds are borne directly on the hydrocauh (redrawn from Brooks, 1883). Fig. 30. Rhizogeton fusiformis Agassiz : hydranth and polypoid male gonophores (simplified from Agassiz, 1862). In the family Hydractiniidae there is a similar range of positions, although species like " Stylactella " elsae-oswaldae Stechow which have gonophores arising from the stolons have not been included in the table. Any nutritive polyp may become a reproductive one in P
RMRMK84D–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. MONOGRAPH ON THE HYDROIDA OF SOUTHERN AFRICA 205. Fig. 67. Campanularia africana. A, colony with female gonophores, redrawn from Warren (1908, as Campanularia tincta). Campanularia hincksii. B-D, hydrothecae; E, gonotheca. Campanularia laminacarpa. F-H, hydrothecae; J, male gonophore; K, female gonophore. Scale in mm/10.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not
RMRE86PX–. Contributions to Canadian biology. Marine biology; Natural history. UYDROIDS OF EASTERN CATfADA 151 Tulnilaria crocea (Agassiz). Trophosome. Colony growing in thick tufts which make a tangled mass below, but separate into long stems above which reach out of the mass; branching irregular; stems slightly and irregularly aunulatod; proximal and distal set of tentacles each 20-24, Oonosonie. Gonophores growing in long racemes, without radial canals, but with 4 laterally compressed apical processes.. Tuhularia indivisa Linn?eus. Trophosome. Stems growing in clusters, un- branched, height 30 cm.;
RMRGAW44–. Bulletin of the Natural History Museum (Zoology). Fig. 13 Erenna laciniata. Photograph of part of siphosome showing male gonophores. short, brown-coloured stripes. No nematocysts were found on the palpacle. Gonodendra. (Figs 1 ID, 13). The JSL 1688 specimen was fe- male and the gonodendra were arranged in a very similar fashion to that described in Erenna richardi. The JSL 1454 specimen was male, with the individual gonophores apparently scattered randomly down the stem (Fig. 13). Each was a relatively large medusoid, whose manubrium progressively filled with spermatozoa until it occupied al
RMRGDGJ4–. Bulletin of the Natural History Museum Zoology. . Fig. 5 Bargmannia elongata. A. Young tentilla with stenoteles (st) at proximal end of cnidoband (magn. 50x); B. Part of siphosome showing three siphosomal tentacles (t) and several buds (b) (magn. 16x); C. Male gonophores (magn. 30x). mesogloea. At its base the lower nerve tract can be seen to leave its proximity and to continue down beneath the ventral surface of the nectophore to reach the ostium. The short pedicular canal (Figure 2B, pedc) extends through the mesogloea, from the base of the pallial canal, to the nectosac. There it gives ri
![. Contributions to Canadian biology. Marine biology; Natural history. Dicoryne conferta. Dicoryne flexuosa Sars. Trophosome. Stem flexible, slightly branched or dichotomously divided; 7 mm. in height; hydranth short fusiform with about 12 tentacles. Gonosome. Gonophores on short pedicels, growing from the stem only; sporosacs more numerous in the cluster than in the preceding species.. No. 5. Dicoryne flexuosa (after Sais). Family SYNCORYNID^. Trophosome. Hydranths club-shaped, with numerous scattered, capitate ten- tacles. Gonosome. Gonophores on body of the hydranth produce free medusa" Stock Photo](https://c8.alamy.com/comp/REA1XK/contributions-to-canadian-biology-marine-biology-natural-history-dicoryne-conferta-dicoryne-flexuosa-sars-trophosome-stem-flexible-slightly-branched-or-dichotomously-divided-7-mm-in-height-hydranth-short-fusiform-with-about-12-tentacles-gonosome-gonophores-on-short-pedicels-growing-from-the-stem-only-sporosacs-more-numerous-in-the-cluster-than-in-the-preceding-species-no-5-dicoryne-flexuosa-after-sais-family-syncorynid-trophosome-hydranths-club-shaped-with-numerous-scattered-capitate-ten-tacles-gonosome-gonophores-on-body-of-the-hydranth-produce-free-medusaquot-REA1XK.jpg ". Contributions to Canadian biology. Marine biology; Natural history. Dicoryne conferta. Dicoryne flexuosa Sars. Trophosome. Stem flexible, slightly branched or dichotomously divided; 7 mm. in height; hydranth short fusiform with about 12 tentacles. Gonosome. Gonophores on short pedicels, growing from the stem only; sporosacs more numerous in the cluster than in the preceding species.. No. 5. Dicoryne flexuosa (after Sais). Family SYNCORYNID^. Trophosome. Hydranths club-shaped, with numerous scattered, capitate ten- tacles. Gonosome. Gonophores on body of the hydranth produce free medusa" Stock Photo")
RMREA1XK–. Contributions to Canadian biology. Marine biology; Natural history. Dicoryne conferta. Dicoryne flexuosa Sars. Trophosome. Stem flexible, slightly branched or dichotomously divided; 7 mm. in height; hydranth short fusiform with about 12 tentacles. Gonosome. Gonophores on short pedicels, growing from the stem only; sporosacs more numerous in the cluster than in the preceding species.. No. 5. Dicoryne flexuosa (after Sais). Family SYNCORYNID^. Trophosome. Hydranths club-shaped, with numerous scattered, capitate ten- tacles. Gonosome. Gonophores on body of the hydranth produce free medusa"
RMRGCJ5J–. Bulletin of the United States Fish Commission. Fisheries -- United States; Fish-culture -- United States. HYDROIDS OF BEAUFORT, NORTH CAROLINA. Family PE.NARID.€. 355 Trophosome.—Colony branched; hydranths with a proximal whorl of long filiform tentacles around the body of the hydranth and several capitate tentacles on the proboscis, these usually in a series of whorls. Gonosome.—Gonophores producing free medusse with four radial canals and four rudimentary tentacles. Genus PENNARU. Trophosome.—Colony large, much branched, often with a distinct pinnate or twice pinnate arrange- ment; hydran
RMRGD54G–. Bulletin of the Natural History Museum Zoology. . Fig. 19 Nectophores of A. Bargmannia amoena sp. nov. (magn. 10); B, C. Pyrostephos vanhoeffeni collected by SCUBA (B, magn. 1 lx) and by net (C, magn. 7.5x). structures. Since only female gonophores could be identified on submersible collected specimens, this point could not be checked (P.R.Pugh, personal observation). Whether Erenna richardi is monoecious or dioecious remains unknown. Nonetheless, it is of interest to note that, of the physonect species whose female gonophores are known, only those of P. vanhoeffeni and B. amoena contain mor
RMRE9HGR–. Contributions to Canadian biology. Marine biology; Natural history. 166 DEPARTMENT OF THE NAVAL SERYICE Family HEBELLID^. Trophosome. Oolony simple, creeping; hydranths with conical or dome-shaped proboscis; hydrothecae tubular, diaphragm present, no operculum. Gonosome. Gonangia separate, not collected in a mass. Genus Hebella. Trophosome. A creeping stem gives rise to single hydranths, attached by short pedicels; diaphragm present in the hydrothecse. Gonosome. Gonophores producing free medusae. KF.Y TO SPECIES. a Hydrotheca tubular, pedicel very short. h Hydrotheca urceolate, pedicel longe
![. Contributions to Canadian biology. Marine biology; Natural history. No. 50. Obelia hyalina.. No. 51. Obelia longissima. Family CAMPANULINID^. Tropliosoyne. Colonies branched or unbranched; hydrothecae pedicellate or ses- sile, always operculate, the operculum formed of converging segments; hydranths with conical proboscis. Gonosome. Gonophores producing fixed sporosacs or free medusse. KEY TO GENERA. a Hydrotheca pedicellate. h Hydrotheca] margin distinct. c Operculum of several converging segments. Calycella. cc Operculum of four segments. Tetrapoma. ccc Operculiim shaped like an A-tent. St Stock Photo](https://c8.alamy.com/comp/RE9HK9/contributions-to-canadian-biology-marine-biology-natural-history-no-50-obelia-hyalina-no-51-obelia-longissima-family-campanulinid-tropliosoyne-colonies-branched-or-unbranched-hydrothecae-pedicellate-or-ses-sile-always-operculate-the-operculum-formed-of-converging-segments-hydranths-with-conical-proboscis-gonosome-gonophores-producing-fixed-sporosacs-or-free-medusse-key-to-genera-a-hydrotheca-pedicellate-h-hydrotheca-margin-distinct-c-operculum-of-several-converging-segments-calycella-cc-operculum-of-four-segments-tetrapoma-ccc-operculiim-shaped-like-an-a-tent-st-RE9HK9.jpg ". Contributions to Canadian biology. Marine biology; Natural history. No. 50. Obelia hyalina.. No. 51. Obelia longissima. Family CAMPANULINID^. Tropliosoyne. Colonies branched or unbranched; hydrothecae pedicellate or ses- sile, always operculate, the operculum formed of converging segments; hydranths with conical proboscis. Gonosome. Gonophores producing fixed sporosacs or free medusse. KEY TO GENERA. a Hydrotheca pedicellate. h Hydrotheca] margin distinct. c Operculum of several converging segments. Calycella. cc Operculum of four segments. Tetrapoma. ccc Operculiim shaped like an A-tent. St Stock Photo")
RMRE9HK9–. Contributions to Canadian biology. Marine biology; Natural history. No. 50. Obelia hyalina.. No. 51. Obelia longissima. Family CAMPANULINID^. Tropliosoyne. Colonies branched or unbranched; hydrothecae pedicellate or ses- sile, always operculate, the operculum formed of converging segments; hydranths with conical proboscis. Gonosome. Gonophores producing fixed sporosacs or free medusse. KEY TO GENERA. a Hydrotheca pedicellate. h Hydrotheca] margin distinct. c Operculum of several converging segments. Calycella. cc Operculum of four segments. Tetrapoma. ccc Operculiim shaped like an A-tent. St
RMREA1YD–. Contributions to Canadian biology. Marine biology; Natural history. No. 2. Clava leptoslyla. Family LARID^. Trophosome. Zooids rising singly from a reticular stolon; tentacles much reduced in number, very extensile; proboscis fusiform. Gonosome. Gonophores producing free medusae. Genus Monobrachium. Trophosome. Zooids, each with a single tentacle which has great freedom of movement; mouth terminal. Gonosome. Medusa buds grow from the stolon; medusae with four radial canals. Monohrachium parasitum Mereschkowsky. Trophosome. Stolon growing over living mollusc shells; the zooids appear at the h
RMREA1X6–. Contributions to Canadian biology. Marine biology; Natural history. 144 DEPARTMENT OF THE NAVAL 8ERYICE Genus Garveia. Trophosome. Colony branched or unbranched; perisarc conspicuous; hydranth fusiform. Gonosome. Gonophores borne on brancli-like pedicels; if perisarc covers the gonophore at early stage, it later bursts off, leaving a cup-like expansion around the base. Garveia groenlandica Levinsen. Trophosome. Stems unbranched or very slightly branched, 8 mm. high; perisarc wrinkled or sometimes irregularly annulated; perisarc passing over the lov^er part of the body of the hydranth; tentac
![. Bulletin of the Essex Institute. Essex Institute; Natural history; genealogy. VIEW OF ANTERIOR END OF ACAULIS, SHOWING TEM- PORARY TENTACLES tt. ADULT ACAULIS. «, TERMINAL OPENING OF THE BODY—THE INTERIOR OF THIS BODY IS "DARK REDDISH PURPLE;" 6, CENTRAL, PURPLE-COLORED BODY WALL; C, SMALL PAPILLAE—THESE, AS WELL AS THE EXTERNAL BODY WALL, ARE LIGHT PINK ; (l, RIDGES OR FOLDS IN THE EXTERNAL WALLS OF THE BODY, OF A "WHITE color;" e, TERMINAL continuation (unattached) of the body of the young ACAULIS; g, GONOPHORES—THE INTERIOR OF THESE CLUSTERS IS DARK PURPLE, THE EXTERIO Stock Photo](https://c8.alamy.com/comp/RGH1DX/bulletin-of-the-essex-institute-essex-institute-natural-history-genealogy-view-of-anterior-end-of-acaulis-showing-tem-porary-tentacles-tt-adult-acaulis-terminal-opening-of-the-bodythe-interior-of-this-body-is-quotdark-reddish-purplequot-6-central-purple-colored-body-wall-c-small-papillaethese-as-well-as-the-external-body-wall-are-light-pink-l-ridges-or-folds-in-the-external-walls-of-the-body-of-a-quotwhite-colorquot-e-terminal-continuation-unattached-of-the-body-of-the-young-acaulis-g-gonophoresthe-interior-of-these-clusters-is-dark-purple-the-exterio-RGH1DX.jpg ". Bulletin of the Essex Institute. Essex Institute; Natural history; genealogy. VIEW OF ANTERIOR END OF ACAULIS, SHOWING TEM- PORARY TENTACLES tt. ADULT ACAULIS. «, TERMINAL OPENING OF THE BODY—THE INTERIOR OF THIS BODY IS "DARK REDDISH PURPLE;" 6, CENTRAL, PURPLE-COLORED BODY WALL; C, SMALL PAPILLAE—THESE, AS WELL AS THE EXTERNAL BODY WALL, ARE LIGHT PINK ; (l, RIDGES OR FOLDS IN THE EXTERNAL WALLS OF THE BODY, OF A "WHITE color;" e, TERMINAL continuation (unattached) of the body of the young ACAULIS; g, GONOPHORES—THE INTERIOR OF THESE CLUSTERS IS DARK PURPLE, THE EXTERIO Stock Photo")
RMRGH1DX–. Bulletin of the Essex Institute. Essex Institute; Natural history; genealogy. VIEW OF ANTERIOR END OF ACAULIS, SHOWING TEM- PORARY TENTACLES tt. ADULT ACAULIS. «, TERMINAL OPENING OF THE BODY—THE INTERIOR OF THIS BODY IS "DARK REDDISH PURPLE;" 6, CENTRAL, PURPLE-COLORED BODY WALL; C, SMALL PAPILLAE—THESE, AS WELL AS THE EXTERNAL BODY WALL, ARE LIGHT PINK ; (l, RIDGES OR FOLDS IN THE EXTERNAL WALLS OF THE BODY, OF A "WHITE color;" e, TERMINAL continuation (unattached) of the body of the young ACAULIS; g, GONOPHORES—THE INTERIOR OF THESE CLUSTERS IS DARK PURPLE, THE EXTERIO
RMRGDGB3–. Bulletin of the Natural History Museum Zoology. * fg. Fig. 11 Bargmannia amoena sp. nov. A. Mature tentillum, with stenoteles Of) at base of cnidoband (magn. 25x); B. Cormidium of siphosome, with gastrozooids detached (gz1 and gz2 mark their attachment points) showing the siphosomal tentacle (r), four buds ib1'4) and female gonophores (fg) (magn. 25x); C. Male gonophores (mg) attached just distal to gastrozooid, with its basigaster (bg) and stomach (s), and proximal to the first bud (b1) (magn. 12.5x).. Please note that these images are extracted from scanned page images that may have been d
RMREA1WR–. Contributions to Canadian biology. Marine biology; Natural history. HTDROIDS OF EASTERN CANADA 145 Tamily EUDENDRID^. Trophosome. Colony branching, perisarc well developed; proboscis trumpet- shaped but with much freedom of movement; tentacles filiform in a single whorl. Gonosome. Gonophores producing fixed sporosacs; male and female gonophores usually dissimilar; male gonophores in whorls, female gonophores in clusters. Characters as in the family. Genus EUDENDRIUM. KEY TO SPECIES, a Main stem, primary and even secondary branches, fascicled. h Branches and pedicels slightly annulated proxim
RMRE86PC–. Contributions to Canadian biology. Marine biology; Natural history. No. 23. Tubularia indivisa. Tuhularia larynx Ellis and Solander. Trophosom-e. Stems clustered, often tang-led at the base, height 2 cm.; perisarc extensively annulated, annulations varying from deep to shallow; proximal and distal set of tentacles each about 20. Gonosome. Gonophores in denser, more compact racemes; sporosacs without radial canals; apical processes scarcely develoi>ed.. No. 24. Tubularia larynx.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for
RMRGCJ42–. Bulletin of the United States Fish Commission. Fisheries -- United States; Fish-culture -- United States. Gonosome.—Gonophores growing either from the stem or the hydrorhiza attached by short annu- lated pedicels; gonangia strongly corrugated, each corrugation with a distinct keel; oval, truncate at the distal end. Distribution.—On floating sargassum from the seaward side of Bogue Bank. I can see no good reason for separating Clytia bicophora Agassiz from Clytia johnsloni (Alder). They seem to agree in every particular. Clytia longicyatha (Allman). Obelia longicyatha Allman, Mem. Mus. Comp.
RMRGCJ6G–. Bulletin of the United States Fish Commission. Fisheries -- United States; Fish-culture -- United States. HYDROIDS OF BEAUFORT, NORTH CAROLIXA. 351 they do in E. ramosum. I have never found any female gonophores arising from the hydrocaulus, as they often occur in E. ramosum. E. ramosum and E. carneum are found growing side by side in so many localities and have the general appearance so much alike that care must be taken to avoid confusion between the two. Family HYDRACTINID.E. Trophosome.—Colon)- formed of distinct nutritive and generative zooids growing from a common basal ccenosarc, whic
mm.; branch- ing irregular, the branches and pedicels long and very slender, scarcely annulated. Gonosome. Gonophores borne on aborted hydranths on pedicels shorter than those supix>rting the normal hydranths. Colour. Bright pink throughout.. No. 16. Eudendrium tenue. Family HYDRACTINID^. Trophosome. Colony formed of distinct nutritive and generative zooids from a common basal copnosarc, which ordinarily is beset with sp Stock Photo")
RMREA1TM–. Contributions to Canadian biology. Marine biology; Natural history. No. 15. EudendriiDii ramosum. Eudcndriain tcitiw A. Agassiz. Trophosome. Stem simi)le, height l.")mm.; branch- ing irregular, the branches and pedicels long and very slender, scarcely annulated. Gonosome. Gonophores borne on aborted hydranths on pedicels shorter than those supix>rting the normal hydranths. Colour. Bright pink throughout.. No. 16. Eudendrium tenue. Family HYDRACTINID^. Trophosome. Colony formed of distinct nutritive and generative zooids from a common basal copnosarc, which ordinarily is beset with sp
RMRGK03J–. Bulletin of the British Museum (Natural History). 478 EVOLUTIONARY TRENDS IN CAPITATE HYDROIDS AND MEDUSAE In the Clavidae, one of the more primitive families of the Filifera, we find nearly all the steps in the transfer of the gonophores away from the hydranths. In Clava sqnamata all the hydranths bear gonophores (Text-fig. 27), but in Merona cornu- copiae, division of labour has set in ; the nutritive polyps are able to concentrate on non-reproductive functions (Text-fig. 28). In Cordylophora lacustris the repro- ductive polyp has disappeared and the gonophore is borne directly on the hydr
RMREA1WH–. Contributions to Canadian biology. Marine biology; Natural history. No. 10. Eudendrium album. Eudendrium annulatum Norman. Trophosome. Stem shrubby, covered with a dense network of anastomosing tubes, 10 cm., branches very numerous making the colony look bushy, fascicled in the proximal portion; ultimate branches slender, these and the i>edicels closely annulated through- out. Gonosome. Gonophores clustered at the base of hydranths that are on short, annulated pedicels. Colour. Yellowish throughout in preserved specimens. 7'9650—10. No. 11. Eudendriutn annulatum.. Please note that these i
RMRMK8DJ–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. MONOGRAPH ON THE HYDROTDA OF SOUTHERN AFRICA 159. Fig. 51. Hydrodendron caciniformis. A, stem; B and C, parts of stem with hydrophores and nema- tothecae; D and E, male and female gonophores (material from Vema Seamount); F, living hydranths and nematophores. Scale in mm/10.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. South A
RMRGAW4G–. Bulletin of the Natural History Museum (Zoology). 178 P.R.PUGH. Fig. 13 Erenna laciniata. Photograph of part of siphosome showing male gonophores. short, brown-coloured stripes. No nematocysts were found on the palpacle. Gonodendra. (Figs 1 ID, 13). The JSL 1688 specimen was fe- male and the gonodendra were arranged in a very similar fashion to that described in Erenna richardi. The JSL 1454 specimen was male, with the individual gonophores apparently scattered randomly down the stem (Fig. 13). Each was a relatively large medusoid, whose manubrium progressively filled with spermatozoa until
RMRGH1Y2–. Bulletin of the Essex Institute. Essex Institute; Natural history -- Periodicals; Essex County (Mass. ) -- History Periodicals. 34 CGELENTEEATA AND stolon. Sheathed in chitinous polypary. Buds in clus- ters below lower tentacles. No medusae. T. comucojrice. Podocoryne. Ccenosarc thick network ; polypary forms a continuous crust which forms a small cup-like invest-. TUBULARIA. CORYMORPHA. ment round the base of polypites. Single verticil of ten- tacles. Gonophores borne below the tentacles. Free me- dus83. Gonosome bell-shaped. Short manubrium with oral tufts of thread cells. P. cornea. Euden
RMRD1GG1–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. 26 HYDROIDA below the polyp. The polyp wears a basal whorl of 20—35 tentacles up to 40 mm. long; the distal tentacles, up to 3 mm. long, are densely crowded round the orifice in a whorl consisting of several rows. The female gonophores are eumedusoid with 3—6 external longitudinal ribs and as many corresponding radial canals. The male gonophores are cryptomedusoid and oval, often with an attempt to be pointed in the distal part. The gonophores are born upon up to 20 blastostyles, which attain a length of 35 mm. The actinula
RMRGCJ76–. Bulletin of the United States Fish Commission. Fisheries -- United States; Fish-culture -- United States. Fig. 6.—Eudendrium capillare Alder. A, cluster of female gonophores growin^t rom the hydrorhiza; B, cluster of female gono- phores growing from the stem; C, cluster of male gonophores growing from the hydrorhiza (after Allman); D. cluster of male gonophores growing from the stem (after Allman). Gonosome.—Female gonophores borne on aborted hydranths, commonly with a zigzag arrangement from the end of the pedicel, this pedicel being more or less annulated throughout; often a scries of pedi
RMRMKB05–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 252 ANNALS OF THE SOUTH AFRICAN MUSEUM. Fig. 83. Amphisbetia operculata. A, stem; B, part of stem with female gonophores; C and D, hydrothecae; E, margin of hydrotheca with operculum. Calamphora campanulata. F, three hydrothecae, two containing hydranths with blind caecum. Scale: A in cm, the rest in mm/10.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly res
RMRGCTG1–. Bulletin of the Natural History Museum (Zoology). 174 P.R.PUGH. gvc Fig. 7 Erenna richardi. A-D. Early stages in the development of a tentillum. Scale 0.5 mm. c cnidoband; dc diverticular canal; gvc gastrovascular canal; o 'ocellus';/; pedicle; tp terminal process. egg. The immature gonodendra (Fig. 5E) were more darkly pigmented and had a relatively long stalk which typically bifurcated close to its apex, with the gonophores being developed on the branches. One of these branches could be denuded and could be mistaken for a gonopalpon. Occasionally small gonophores were budded off approximat
RMREA1YH–. Contributions to Canadian biology. Marine biology; Natural history. HTDROIDS OF EASTERN CANADA Genus Clava. 141 Trophosome. Zooids rising singly from a reticular stolon; tentacles numerous, scattered, filiform; proboscis clavate. Gonosome. Gonophores produce fixed sporosacs in clusters a short distance below the proximal tentacles. Clava leptostyla Agassiz. Trophosome. Zooids clustered, 1 cm. in height, constricted at the base; proboscis clavate, tentacles 20-30. Gonosome. Sporosacs spherical, appearing in large clusters just below the proximal tentacles.. No. 2. Clava leptoslyla. Family LAR
RMRMHT0R–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. HYDROZOA FROM COASTS OF NATAL AND PORTUGUESE EAST AFRICA 305 Several other small Eudendrium colonies are present in the collections from this coast, but in the total absence of gonophores identification has not been attempted. Family Hydractiniidae Hydractinia diogenes n. sp. Fig. 2 Holotype. MOR 51H. (S.A.M. registered number H123). Description. Colonies covering 5 gastropod shells occupied by hermits (Diogenes costatus). Hydrorhiza a network of perisarcal tubes, covered by a layer of free coenosarc
![. Bulletin of the British Museum (Natural History). EVOLUTIONARY TRENDS IN CAPITATE HYDROIDS AND MEDUSAE 477 feeding polyps^ Usually this involves an almost complete cessation of activity for hrZ "^'- â I" '''^ '"'^'"^''' ^"'^ ^"^'"'^^^' ''''' '"-t <=-t^iJ *e already short breedmg period m species near the temperature limit of their distribution fh. f T 11 ""^'""^"^ Solanderiidae where the gonophores are not' sited on ZntTr'l ''T'^'/i'T''^' '^^"'°^" *° ^'^^ above pattern. In ElnlZ (Text-fig. 48, page 500) and Hydro Stock Photo](https://c8.alamy.com/comp/RGK050/bulletin-of-the-british-museum-natural-history-evolutionary-trends-in-capitate-hydroids-and-medusae-477-feeding-polyps-usually-this-involves-an-almost-complete-cessation-of-activity-for-hrz-quot-iquot-quotquot-quot-quotquot-quot-t-lt=-tij-e-already-short-breedmg-period-m-species-near-the-temperature-limit-of-their-distribution-fh-f-t-11-quotquotquotquotquot-solanderiidae-where-the-gonophores-are-not-sited-on-znttrl-tit-quotquot-above-pattern-in-elnlz-text-fig-48-page-500-and-hydro-RGK050.jpg ". Bulletin of the British Museum (Natural History). EVOLUTIONARY TRENDS IN CAPITATE HYDROIDS AND MEDUSAE 477 feeding polyps^ Usually this involves an almost complete cessation of activity for hrZ "^'- â I" '''^ '"'^'"^''' ^"'^ ^"^'"'^^^' ''''' '"-t <=-t^iJ *e already short breedmg period m species near the temperature limit of their distribution fh. f T 11 ""^'""^"^ Solanderiidae where the gonophores are not' sited on ZntTr'l ''T'^'/i'T''^' '^^"'°^" *° ^'^^ above pattern. In ElnlZ (Text-fig. 48, page 500) and Hydro Stock Photo")
RMRGK050–. Bulletin of the British Museum (Natural History). EVOLUTIONARY TRENDS IN CAPITATE HYDROIDS AND MEDUSAE 477 feeding polyps^ Usually this involves an almost complete cessation of activity for hrZ "^'- â I" '''^ '"'^'"^''' ^"'^ ^"^'"'^^^' ''''' '"-t <=-t^iJ *e already short breedmg period m species near the temperature limit of their distribution fh. f T 11 ""^'""^"^ Solanderiidae where the gonophores are not' sited on ZntTr'l ''T'^'/i'T''^' '^^"'°^" *° ^'^^ above pattern. In ElnlZ (Text-fig. 48, page 500) and Hydro
RMRGH1DT–. Bulletin of the Essex Institute. Essex Institute; Natural history; genealogy. 34 CCELENTERATA AND stolon. Sheathed in chitinous polypary. Buds in clus- ters below lower tentacles. No medusae. T. cornucopioe. Podocoryne. Ccenosarc thick network ; polypary forms a continuous crust which forms a small cup-like invest-. TUBULARIA. CORYMORPHA. ment round the base of polypites. Single verticil of ten- tacles. Gonophores borne below the tentacles. Free me- dusae. Gonosome bell-shaped. Short manubrium with oral tufts of thread cells. P. cornea. Eudendrium. Stem branched with creeping stolon. Chitino
RMRGJHGP–. Bulletin of the British Museum (Natural History). . Fig. 46. Diagrammatic longitudinal section of the different stages in the reduction of the gonophore : a, medusa ; B, eumedusoid ; c and d, cryptoraedusoid ; e, hetero- medusoid ; F, styloid (redrawn from Kiihn, 1913). Table III.—Degree of Reduction of the Gonophores Corymorpha nutans M. Sars . Corymorpha glacialis G. O. Sars . Corymorpha groenlandica AUman Tubiilaria indivisa L. Tubularia larynx Ellis & Solander Tubularia regalis Boeck Ectopleura dumortieri (van Beneden) Hybocodon prolifer L. Agassiz Medusa. X X X Eumedusoid. ? ? Crypt
RMRMKBHK–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. Fig. 1. Bougainvillia macloviana (Lesson) (A-C), and Bougainvillia ramosa (van Beneden) (D-E). A-C, 3 stems from SH 255B showing gonophores in various stages of development. D-E, two portions of a colony from SH 429D showing filamentous appendages and young gonophores-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. South African
RMRHN4CF–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 604 ROBERT K. JOSEPHSOX DISTAL TENTACLE OPENERS co LU I- co CO 1 CO. DISTAL TENTACLE CLOSERS GONOPHORES PROXIMAL TENTACLE CLOSERS NECK MUSCULATURE CONDUCTING SYSTEM PACEMAKER SYSTEM MUSCLE GROUP EXCITATORY INPUT INHIBITORY INPUT FIGURE 8. The interactions between conducting systems, pacemaker systems and effectors in a Tnbularia polyp. This figure is based on one published earlier (Josephson and Uhrich, 1969) with the addition of gonophore interactions from unpublished observations of N. B. Rushforth and the inhibition of di
RMRGCJ8A–. Bulletin of the United States Fish Commission. Fisheries -- United States; Fish-culture -- United States. HYDROIDS OF BEAUFORT, NORTH CAROLINA. 347 Syncoryne miiabilis (Agassiz). Corytu mirabilis Agassiz, Cont. Nat. Hist. U. S., IV, 1862, p. 185. Syncoryne mirabitis Nutting, Hydroids of the Woods Hole Region, 1901, p. 32S. Hargitt, Am. Nat., 1901, p. 306. Trophosome.—Colony unbranched or slightly and irregularly branched; hydranth body large, very stout for its length; perisarc smooth, reaching to the base of the hydranth. Gonosome.—Gonophores borne below the proximal tentacles; medusae beco
RMRGCJ7F–. Bulletin of the United States Fish Commission. Fisheries -- United States; Fish-culture -- United States. Fig. 6.—Eudendrium capillare Alder. A, cluster of female gonophores growin^t rom the hydrorhiza; B, cluster of female gono- phores growing from the stem; C, cluster of male gonophores growing from the hydrorhiza (after Allman); D. cluster of male gonophores growing from the stem (after Allman). Gonosome.—Female gonophores borne on aborted hydranths, commonly with a zigzag arrangement from the end of the pedicel, this pedicel being more or less annulated throughout; often a scries of pedi
RMRR2527–. African invertebrates : a journal of biodiversity research. Invertebrates -- Africa; Biological diversity -- Africa; Biological diversity. ON FAEAWIUGHTIA JJOBUSTA. 203 111 the case of the male gonophores, I liave never fouiul sucli large capsules as occur in the female gonophores. 'I'heir final growth appears to be much reduced, and they do not as a rule exceed 10 to 12^ in diameter. In some of these smaller forms the concentric lamination, especially towards the centre, is replaced by a radial striation (PI. XXXIV, fig. 8 (6^ 9, 10), and text-fig. 5 (6') ). In figs. 9 and 10 of the plate t
RMRHRACT–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 212 CHAS. W. HARG1TT. One other feature in connection with the subject must be noted, namely, that among the several cases, the ova were found in every case in distinctly male gonophores. Among hundreds of female gonophores examined there was not the slightest evidence of male elements among them. Figs. I and 2 show sections through two hermaphroditic gonophores. At b Fig. I is developing a. FIG. 2. Cross-section of hydranth showing development of gonophores. b, her- maphrodite gonophore ; c, early stages of same ; d, sperma
RMRGCJ4K–. Bulletin of the United States Fish Commission. Fisheries -- United States; Fish-culture -- United States. Fig. 16.—C/j'/iacj'/iwtfn'ca Agassiz. A, hydrotheca and gonangium growing from the stolon; B, gonangium growing from the pedicel. Fig. 15.—Clytia coronata (Clarke). A, branched colony; B. unbranched colonies. below the diaphragm being little larger than the end of the pedicel; teeth 10 to 12, sharp-pointed and deeply cut. Gonosome.—Gonophores arising either from the hydrorhiza or from the pedicel by means of short pedicels with one or two annulations; gonangium smooth, oblong, slightly n
RMRHP1H9–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 290 N. J. BERRILL. FIGURE 1. Aselomaris michaeli. A, large and small hydranths arising from the creeping hydrorhiza. B, somewhat older hydranth, at reduced scale, showing developing gonophores, gonophore with developing eggs and gonophore with planulae. C, maximum length hydranth, at same scale as B, showing succession of gonophores from distal juveniles to proximal stalk remnants, e, eggs; g, gonophore; gs, old gonophore stalk; p, planula; r, hydrorhiza.. Please note that these images are extracted from scanned page images
RMRMH28F–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. Fig. 9. Sertularia ligulata Thornely. A, a portion of the stem, and B, a portion of a branch from the holotype in the British Museum (B.M. 1907.8.27.5). hydrothecae forming more or less a straight line at right angles to the axis of the stem. Male gonophores as described by Warren: smooth, subglobular, and with broad, operculate margin. Present in July. Measurements. See var. longa. Remarks. From Warren's description it appears that the internal teeth are not a constant feature, and this is supported
RMRD3RM9–. The Danish Ingolf-expedition. Marine animals; Marine animals; Hydrography; Hydrography; Scientific expeditions. 26 HVDROIDA below the poh-p. The pol^-p wears a basal whorl of 20—35 tentacles up to 40 mm. long; the distal tentacles, up to 3 mm. long, are densely crowded round the orifice in a whorl consisting of several rows. The female gonophores are eumedusoid with 3—6 external longitudinal ribs and as many corresponding radial canals. The male gonophores are cryptomedusoid and oval, often with an attempt to be pointed in the distal part. The gonophores are born upon up to 20 blastostyle.s,
![. Bulletin of the United States Fish Commission. Fisheries -- United States; Fish-culture -- United States. Fig. 2(>.—L<nimeUa clausa (Loven). A, trophosome: B. Bonanza (after Hartlaub); C. gonangium (after Hincks); D, gonailKiuin (after Clarke). to the base, the sides present a slightly sinuated outline. It contains many gonophores, from each of which a medusiform zooid is liberated." Clarke says; "Ck)nosome.—Gonangia developed from the base of the hydrothecal peduncles, very long and slender, largest at the distal end and tapering toward the base, supported on short pedicels Stock Photo](https://c8.alamy.com/comp/RGCJ0E/bulletin-of-the-united-states-fish-commission-fisheries-united-states-fish-culture-united-states-fig-2gtlltnimeua-clausa-loven-a-trophosome-b-bonanza-after-hartlaub-c-gonangium-after-hincks-d-gonailkiuin-after-clarke-to-the-base-the-sides-present-a-slightly-sinuated-outline-it-contains-many-gonophores-from-each-of-which-a-medusiform-zooid-is-liberatedquot-clarke-says-quotcknosomegonangia-developed-from-the-base-of-the-hydrothecal-peduncles-very-long-and-slender-largest-at-the-distal-end-and-tapering-toward-the-base-supported-on-short-pedicels-RGCJ0E.jpg ". Bulletin of the United States Fish Commission. Fisheries -- United States; Fish-culture -- United States. Fig. 2(>.—L<nimeUa clausa (Loven). A, trophosome: B. Bonanza (after Hartlaub); C. gonangium (after Hincks); D, gonailKiuin (after Clarke). to the base, the sides present a slightly sinuated outline. It contains many gonophores, from each of which a medusiform zooid is liberated." Clarke says; "Ck)nosome.—Gonangia developed from the base of the hydrothecal peduncles, very long and slender, largest at the distal end and tapering toward the base, supported on short pedicels Stock Photo")
RMRGCJ0E–. Bulletin of the United States Fish Commission. Fisheries -- United States; Fish-culture -- United States. Fig. 2(>.—L<nimeUa clausa (Loven). A, trophosome: B. Bonanza (after Hartlaub); C. gonangium (after Hincks); D, gonailKiuin (after Clarke). to the base, the sides present a slightly sinuated outline. It contains many gonophores, from each of which a medusiform zooid is liberated." Clarke says; "Ck)nosome.—Gonangia developed from the base of the hydrothecal peduncles, very long and slender, largest at the distal end and tapering toward the base, supported on short pedicels
RMRMKCHR–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 60 ANNALS OF THE SOUTH AFRICAN MUSEUM. Fig. 21. Cladocoryne floccosa. A, hydranth bearing male gonophores; B, macrobasic eurytele, discharged and undischarged. Solanderia minima. C, stem; D, part of stem with hydranths; E, hydrophores. Scale: C in cm, B in mm/100, the rest in mm/10.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work..
RMRMK09J–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. HYDROZOA FROM COASTS OF NATAL AND PORTUGUESE EAST AFRICA 303. Fig. 1. Eudendrium carneum Clarke (A-F), and Eudendrium Pparvum Warren (G—H) A, a large isorhiza. B and C, undischarged and discharged capsules of heterotrichous, micro- basic euryteles. D, old female gonophores showing the basket-shaped capsules surrounding the embryos. E and F, earlier stages in the development of female gonophores showing the bifurcating spadices and the tentacles of the blastostyle. G, a female blastostyle with young g
RMRMK7TW–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. MONOGRAPH ON THE HYDROIDA OF SOUTHERN AFRICA 275. Fig. 90. Salacia desmoides. A, stem with male gonophores; B, stem with female gonophore; C, hydrothecae with hydranths and opercula. Salacia disjuncta. D, stem; E, part of stem with origins of hydrocladia; F, hydrothecae. Scale: D in mm, the rest in mm/10.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resem
RMRMJ787–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. MONOGRAPH ON THE HYDROIDA OF SOUTHERN AFRICA 155. Fig. 50 Halecium Imuricatum. A, part of stem. Halecium lankesteri. B and C, parts of stem with hydrophores; D, stem with female gonophore; E, male gonophore. Halecium tenellum. F ana G, female gonophores containing planulae; H, male gonophore; J-L, parts of stem. Scale in mm/10.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations
RMRGCJ82–. Bulletin of the United States Fish Commission. Fisheries -- United States; Fish-culture -- United States. 348 BULLETIN OF THE BUREAU OF FISHERIES. Genus EUDENDRIUM. This is the only genus of the family Eudendrid». Key to the Species of Eudendrium Found in the Beaufort Region. A. Main stem simple, colony minute. a. Hydranths which bear gonophores showing little or no abortion E. album. b. Hydranths which bear gonophores much aborted E. capillare. B. Main stem fascicled, colony large. a. Hydranths which bear gonophores with little or no abortion E. ramosum. b. Hydranths which bear gonophores m
RMRD4YBP–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. 26 HYDROIDA below the polyp. The polyp wears a basal whorl of 20—35 tentacles up to 40 mm. long; the distal tentacles, up to 3 mm. long, are densely crowded round the orifice in a whorl consisting of several rows. The female gonophores are eumedusoid with 3—6 external longitudinal ribs and as many corresponding radial canals. The male gonophores are cryptomedusoid and oval, often with an attempt to be pointed in the distal part. The gonophores are born upon up to 20 blastostyles, which attain a length of 35 mm. The actinula
RMRMKFHR–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. MONOGRAPH ON THE HYDROIDA OF SOUTHERN AFRICA 371. Fig. 118. Schizotricha St .x. A, anterior view of stem with female gonophores; B, male gonotheca: C, hydroclaaium with branch. Kirchenpaueria irregularis. D and F, parts of hydrocladia; E, stem and origins of hydrocladia: G, stem. Scale: G in cm, the rest in mm/10.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfec
RMRHP1F9–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. sp FIGURE 3. Male gonophores. A, B, young stage showing formation of entocodon and germ mass. C, later stage with arrows indicating expansion-contraction amplitude of spadix. D, late stage with germ cells present as spermatids, and broken lines indicating stalk diameter when dilated. E, ripe gonophore with active spermatozoa and expanding and contracting distal end. F, emission of spermatozoa, e, entocodon; sp, spadix. contracts in a regular manner, with an amplitude indicated by the arrows in Figure 3C. In the later stages
RMRGDGW7–. Bulletin of the Natural History Museum Zoology. 52 P.R. PUGH one from another to form a small gonodendron; female gonophores contain two or more eggs. Remarks. In Pyrostephos vanhoeffeni, the triangular thrust block is best seen on smaller nectophores. On larger, preserved ones it is bent up dorsally (see also Discussion section). Genus BARGMANNIA Totton, 1954 Diagnosis. Pyrostephids with distinctive elongate nectophores. Mature nectophores with large, triangular thrust block; without apical wedge-shaped processes; with extensive ventro-lateral wings. Basic ridge pattern may be augmented by
RMRD3RWB–. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. 26 HYDROIDA below the polyp. The polyp wears a basal whorl of 20-35 tentacles up to 40 mm. long; the distal tentacles, up to 3 mm. long, are densely crowded round the orifice in a whorl consisting of several rows. The female gonophores are eumedusoid with 3—6 external longitudinal ribs and as many corresponding radial canals. The male gonophores are cryptomedusoid and oval, often with an attempt to be pointed in the distal part. The gonophores are born upon up to 20 blastostyles, which att
![. Bulletin of the Essex Institute. Essex Institute; Natural history -- Periodicals; Essex County (Mass. ) -- History Periodicals. VIEW OF ANTERIOR END OF ACAULIS, SHOWING TEM- PORARY TENTACLES tt. ADULT ACAULIS. «, TERMINAL OPENING OF THE BODY—THE INTERIOR OF THIS BODY IS "DARK REDDISH PURPLE;" b, CENTRAL, PURPLE-COLORED BODY WALL; C, SMALL PAPILLA—THESE, AS WELL AS THE EXTERNAL BODY WALL, ARE LIGHT PINK; d, RIDGKS OR FOLDS IN THE EXTERNAL AVALLS OF THE BODY, OF A "WHITE COLOR;" e, TERMINAL CONTINUATION (UNATTACHED) OF THE BODY OF THK YOUNG ACAULIS; g, GONOPHORES—THE INTERI Stock Photo](https://c8.alamy.com/comp/RGH1YA/bulletin-of-the-essex-institute-essex-institute-natural-history-periodicals-essex-county-mass-history-periodicals-view-of-anterior-end-of-acaulis-showing-tem-porary-tentacles-tt-adult-acaulis-terminal-opening-of-the-bodythe-interior-of-this-body-is-quotdark-reddish-purplequot-b-central-purple-colored-body-wall-c-small-papillathese-as-well-as-the-external-body-wall-are-light-pink-d-ridgks-or-folds-in-the-external-avalls-of-the-body-of-a-quotwhite-colorquot-e-terminal-continuation-unattached-of-the-body-of-thk-young-acaulis-g-gonophoresthe-interi-RGH1YA.jpg ". Bulletin of the Essex Institute. Essex Institute; Natural history -- Periodicals; Essex County (Mass. ) -- History Periodicals. VIEW OF ANTERIOR END OF ACAULIS, SHOWING TEM- PORARY TENTACLES tt. ADULT ACAULIS. «, TERMINAL OPENING OF THE BODY—THE INTERIOR OF THIS BODY IS "DARK REDDISH PURPLE;" b, CENTRAL, PURPLE-COLORED BODY WALL; C, SMALL PAPILLA—THESE, AS WELL AS THE EXTERNAL BODY WALL, ARE LIGHT PINK; d, RIDGKS OR FOLDS IN THE EXTERNAL AVALLS OF THE BODY, OF A "WHITE COLOR;" e, TERMINAL CONTINUATION (UNATTACHED) OF THE BODY OF THK YOUNG ACAULIS; g, GONOPHORES—THE INTERI Stock Photo")
RMRGH1YA–. Bulletin of the Essex Institute. Essex Institute; Natural history -- Periodicals; Essex County (Mass. ) -- History Periodicals. VIEW OF ANTERIOR END OF ACAULIS, SHOWING TEM- PORARY TENTACLES tt. ADULT ACAULIS. «, TERMINAL OPENING OF THE BODY—THE INTERIOR OF THIS BODY IS "DARK REDDISH PURPLE;" b, CENTRAL, PURPLE-COLORED BODY WALL; C, SMALL PAPILLA—THESE, AS WELL AS THE EXTERNAL BODY WALL, ARE LIGHT PINK; d, RIDGKS OR FOLDS IN THE EXTERNAL AVALLS OF THE BODY, OF A "WHITE COLOR;" e, TERMINAL CONTINUATION (UNATTACHED) OF THE BODY OF THK YOUNG ACAULIS; g, GONOPHORES—THE INTERI
RMRMJ6P4–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. MONOGRAPH ON THE HYDROIDA OF SOUTHERN AFRICA 207. Fig. 68. Campanularia crenata. A-C, hydrothecae; D, t.s. hydrotheca; E, male gonophore; F, female gonophore. Campanularia Idelicata. G-J, hydrothecae (the centre one the most typical); K, t.s. hydrotheca; L, male gonophores. Scale in mm/10.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original
![. The Danish Ingolf-expedition. Marine animals; Marine animals; Hydrography; Hydrography; Scientific expeditions. 168 IIVDROIDA 11 The gonothecse are borne on short, ringed stalks, proceeding from the apophyses beside the hydro- theca stalks. They are oblong, inversely conical, distally cut off transversely with a central short and narrow, almost tubulous neck. The gonophores develope into free medusee (06e//'a). Material: "Thor" 64°o2' N., 22°33' W., depth 34 metres [labelled Laomedea gelafinosd 6303O' N., 2o°i4' W., - 80 58°n' N., 2°28' W., â 60 - Greenland: Jakobshavn (depth Stock Photo](https://c8.alamy.com/comp/RD1FAJ/the-danish-ingolf-expedition-marine-animals-marine-animals-hydrography-hydrography-scientific-expeditions-168-iivdroida-11-the-gonothecse-are-borne-on-short-ringed-stalks-proceeding-from-the-apophyses-beside-the-hydro-theca-stalks-they-are-oblong-inversely-conical-distally-cut-off-transversely-with-a-central-short-and-narrow-almost-tubulous-neck-the-gonophores-develope-into-free-medusee-06ea-material-quotthorquot-64o2-n-2233-w-depth-34-metres-labelled-laomedea-gelafinosd-6303o-n-2oi4-w-80-58n-n-228-w-60-greenland-jakobshavn-depth-RD1FAJ.jpg ". The Danish Ingolf-expedition. Marine animals; Marine animals; Hydrography; Hydrography; Scientific expeditions. 168 IIVDROIDA 11 The gonothecse are borne on short, ringed stalks, proceeding from the apophyses beside the hydro- theca stalks. They are oblong, inversely conical, distally cut off transversely with a central short and narrow, almost tubulous neck. The gonophores develope into free medusee (06e//'a). Material: "Thor" 64°o2' N., 22°33' W., depth 34 metres [labelled Laomedea gelafinosd 6303O' N., 2o°i4' W., - 80 58°n' N., 2°28' W., â 60 - Greenland: Jakobshavn (depth Stock Photo")
RMRD1FAJ–. The Danish Ingolf-expedition. Marine animals; Marine animals; Hydrography; Hydrography; Scientific expeditions. 168 IIVDROIDA 11 The gonothecse are borne on short, ringed stalks, proceeding from the apophyses beside the hydro- theca stalks. They are oblong, inversely conical, distally cut off transversely with a central short and narrow, almost tubulous neck. The gonophores develope into free medusee (06e//'a). Material: "Thor" 64°o2' N., 22°33' W., depth 34 metres [labelled Laomedea gelafinosd 6303O' N., 2o°i4' W., - 80 58°n' N., 2°28' W., â 60 - Greenland: Jakobshavn (depth
RMRDJ9XA–. Text-book of embryology. Embryology. Fig. 32.—Two gonophores of Tubularia indivisa with developing embryos inside. (After AUman.) A, gonophore with discoid embryo ; opening of umbrella-cavity just formed; radial canals clear. B, gonophore with actinnla larva just escaping; radial canals have disappeared. Act, actinula; em6, embryo; r.c, radial canal; sp, manubrium or spadix; u, opening of umbrella-cavity.. Fig. 33.—Stages in development of Actinnla larva of Tubularia indivisa. (After Allman.) A, creeping larva. B, first fixed form. a6.i, aboral tentacles ; o.t, oral tentacles ; per, perisarc
RMRMKCJF–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. Fig. 19. Bicorona elegans. A, stems; B, mature hydranth bearing gonophores; C and D, young hydranths; E, nematocysts: large and small stenoteles. Coryne Ipusilla. F and G, stems, G producing regeneration bodies. Scale: A in cm, E in mm/100, the rest in mm/10.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. South African Museum. C
RMRMKCG2–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. Fig. 22. Solanderia procumbens. A, stem of normal form (left) and slender form (right); B, l.s. young gonophore; C, stenotele; D, part of stem with hydranths and gonophores; E, hydrophores and spines. Scale: A in cm, C in mm/100, the rest in mm/10.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. South African Museum. Cape Town :
RMRMKCMA–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. MONOGRAPH ON THE HYDROIDA OF SOUTHERN AFRICA 39. Fig. 16. Zyzzyzus solitarius. A, hydranth growing in sponge and showing rooting structures; B, mature hydranth with gonophores and escaping actinulae. Halocordyle disticha. C, stem; D, part of stem and hydrocladia; E, hydranth with gonophores; F, gonophore; G, large stenotele. Scale: C in cm, G in /xm, the rest in mm/10.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - colorat
RMRGAW4T–. Bulletin of the Natural History Museum (Zoology). Fig. 11 Erenna laciniata. A., B. gastrozooids; C. palpon. Scale 2 mm. D. male gonophores. Scale 1 mm.. Fig. 12 Erenna laciniata. Three mature tentilla (Scale 1 mm), with (centrally) an immature one (Scale 0.5 mm). Palpon. (Fig. 11C). Numerous palpons, up to c. 15 mm long, were present with the specimens. They were featureless thin-walled sacs filled, with a milky-white amorphous substance, although in life they were suffused with a brownish hue. The extent of the proboscis was variable, but typically, at its base, there were some. Please note
![. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. i68 HYDROIDA II The gonothecae are borne on short, ringed stalks, proceeding from the apophyses beside the hydro- theca stalks. They are oblong, inversely conical, distally cnt off transversely with a central short and narrow, almost tnbnlous neck. The gonophores develope into free nieduste {Obelia). Material: "Tlior" 64°02' N., 22°33' W., depth 34 metres |labelled Lnonifdca gclafiiiosa — 63°3o' N., 20°i4' W., - 80 — — 58°! I' N., 2°28' W., — 60 - Greenland: Jakobshavn (depth no Stock Photo](https://c8.alamy.com/comp/RD10JM/the-danish-ingolf-expedition-marine-animals-arctic-regions-scientific-expeditions-arctic-regions-i68-hydroida-ii-the-gonothecae-are-borne-on-short-ringed-stalks-proceeding-from-the-apophyses-beside-the-hydro-theca-stalks-they-are-oblong-inversely-conical-distally-cnt-off-transversely-with-a-central-short-and-narrow-almost-tnbnlous-neck-the-gonophores-develope-into-free-nieduste-obelia-material-quottliorquot-6402-n-2233-w-depth-34-metres-labelled-lnonifdca-gclafiiiosa-633o-n-20i4-w-80-58!-i-n-228-w-60-greenland-jakobshavn-depth-no-RD10JM.jpg ". The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. i68 HYDROIDA II The gonothecae are borne on short, ringed stalks, proceeding from the apophyses beside the hydro- theca stalks. They are oblong, inversely conical, distally cnt off transversely with a central short and narrow, almost tnbnlous neck. The gonophores develope into free nieduste {Obelia). Material: "Tlior" 64°02' N., 22°33' W., depth 34 metres |labelled Lnonifdca gclafiiiosa — 63°3o' N., 20°i4' W., - 80 — — 58°! I' N., 2°28' W., — 60 - Greenland: Jakobshavn (depth no Stock Photo")
RMRD10JM–. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. i68 HYDROIDA II The gonothecae are borne on short, ringed stalks, proceeding from the apophyses beside the hydro- theca stalks. They are oblong, inversely conical, distally cnt off transversely with a central short and narrow, almost tnbnlous neck. The gonophores develope into free nieduste {Obelia). Material: "Tlior" 64°02' N., 22°33' W., depth 34 metres |labelled Lnonifdca gclafiiiosa — 63°3o' N., 20°i4' W., - 80 — — 58°! I' N., 2°28' W., — 60 - Greenland: Jakobshavn (depth no
![. African invertebrates : a journal of biodiversity research. Invertebrates -- Africa; Biological diversity -- Africa; Biological diversity. Cam pa nil la ri a c-aliculata Hinchs. X 30. Gonosome.—Clonangium ovate, with a short peduncle and a wide convex operculum. Male and female similar in shape. The blastostyle of the female gonangium bears one or two gonophores (text-fig. 19, A). Length of gonangium about 0"77 mm., and width 0'53 mm. (32) Clytia elongata sp. )t. Only one specimen of this hydroid has been found; it occurred clinging to a species of Thyroscyphus di-edged. Please note tha Stock Photo](https://c8.alamy.com/comp/RR24BK/african-invertebrates-a-journal-of-biodiversity-research-invertebrates-africa-biological-diversity-africa-biological-diversity-cam-pa-nil-la-ri-a-c-aliculata-hinchs-x-30-gonosomeclonangium-ovate-with-a-short-peduncle-and-a-wide-convex-operculum-male-and-female-similar-in-shape-the-blastostyle-of-the-female-gonangium-bears-one-or-two-gonophores-text-fig-19-a-length-of-gonangium-about-0quot77-mm-and-width-053-mm-32-clytia-elongata-sp-t-only-one-specimen-of-this-hydroid-has-been-found-it-occurred-clinging-to-a-species-of-thyroscyphus-di-edged-please-note-tha-RR24BK.jpg ". African invertebrates : a journal of biodiversity research. Invertebrates -- Africa; Biological diversity -- Africa; Biological diversity. Cam pa nil la ri a c-aliculata Hinchs. X 30. Gonosome.—Clonangium ovate, with a short peduncle and a wide convex operculum. Male and female similar in shape. The blastostyle of the female gonangium bears one or two gonophores (text-fig. 19, A). Length of gonangium about 0"77 mm., and width 0'53 mm. (32) Clytia elongata sp. )t. Only one specimen of this hydroid has been found; it occurred clinging to a species of Thyroscyphus di-edged. Please note tha Stock Photo")
RMRR24BK–. African invertebrates : a journal of biodiversity research. Invertebrates -- Africa; Biological diversity -- Africa; Biological diversity. Cam pa nil la ri a c-aliculata Hinchs. X 30. Gonosome.—Clonangium ovate, with a short peduncle and a wide convex operculum. Male and female similar in shape. The blastostyle of the female gonangium bears one or two gonophores (text-fig. 19, A). Length of gonangium about 0"77 mm., and width 0'53 mm. (32) Clytia elongata sp. )t. Only one specimen of this hydroid has been found; it occurred clinging to a species of Thyroscyphus di-edged. Please note tha
RMRE86PJ–. Contributions to Canadian biology. Marine biology; Natural history. Tuhularia indivisa Linn?eus. Trophosome. Stems growing in clusters, un- branched, height 30 cm.; perisarc heavier than in other species; little or no sign of annulation; proximal tentacles up to 40, long and slender; distal set much more numerous but shorter. Gonosome. Gonophores in racemes; sporosacs with 4 radial canals but without apical processes. No. 22. Tiihnlaria crocea.. No. 23. Tubularia indivisa. Tuhularia larynx Ellis and Solander. Trophosom-e. Stems clustered, often tang-led at the base, height 2 cm.; perisarc ex
RMRMJ8Y0–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. THE HYDROZOA OF FALSE BAY, SOUTH AFRICA l85. Fig. 2. Eudendrium deciduum n. sp. from the holotype. A. Whole colony. B. Portion of sterile colony. C. Branch bearing female gonophores in various stages of development. D. A branch bearing two groups of male gonophores. E-H. Stages in development of the female gonophore (see text). of the hydranth, and in the absence of an endodermal plug in the gastral cavity. E. racemosum (Gmelin) differs in the form of the female gonophore, which has a forked spadix.
![. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. 168 HVDROIDA II The gonothecse are borne on short, ringed stalks, proceeding from the apophyses beside the hydro- theca stalks. They are oblong, inversely conical, distally cut off transversely with a central short and narrow, almost tubnlons neck. The gonophores develope into free medusae (Obeliu). Material: "Thor" 64°02' N., 22°33' W., depth 34 metres [labelled Laomedea gelaiinosd] 63C3C N., 2o°i4' W., - 80 — 58°u' N., 2°28' W., - 60 - Greenland: Jakobshavn (depth not stated) Provens havu ( — - — ) Holstensborg ( Stock Photo](https://c8.alamy.com/comp/RD1FCG/the-danish-ingolf-expedition-scientific-expeditions-arctic-ocean-168-hvdroida-ii-the-gonothecse-are-borne-on-short-ringed-stalks-proceeding-from-the-apophyses-beside-the-hydro-theca-stalks-they-are-oblong-inversely-conical-distally-cut-off-transversely-with-a-central-short-and-narrow-almost-tubnlons-neck-the-gonophores-develope-into-free-medusae-obeliu-material-quotthorquot-6402-n-2233-w-depth-34-metres-labelled-laomedea-gelaiinosd-63c3c-n-2oi4-w-80-58u-n-228-w-60-greenland-jakobshavn-depth-not-stated-provens-havu-holstensborg-RD1FCG.jpg ". The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. 168 HVDROIDA II The gonothecse are borne on short, ringed stalks, proceeding from the apophyses beside the hydro- theca stalks. They are oblong, inversely conical, distally cut off transversely with a central short and narrow, almost tubnlons neck. The gonophores develope into free medusae (Obeliu). Material: "Thor" 64°02' N., 22°33' W., depth 34 metres [labelled Laomedea gelaiinosd] 63C3C N., 2o°i4' W., - 80 — 58°u' N., 2°28' W., - 60 - Greenland: Jakobshavn (depth not stated) Provens havu ( — - — ) Holstensborg ( Stock Photo")
RMRD1FCG–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. 168 HVDROIDA II The gonothecse are borne on short, ringed stalks, proceeding from the apophyses beside the hydro- theca stalks. They are oblong, inversely conical, distally cut off transversely with a central short and narrow, almost tubnlons neck. The gonophores develope into free medusae (Obeliu). Material: "Thor" 64°02' N., 22°33' W., depth 34 metres [labelled Laomedea gelaiinosd] 63C3C N., 2o°i4' W., - 80 — 58°u' N., 2°28' W., - 60 - Greenland: Jakobshavn (depth not stated) Provens havu ( — - — ) Holstensborg (
RMRMN9DX–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. HYDROZOA OF THE SOUTH AND WEST COASTS OF SOUTH AFRICA 4b7. Fig. 10. Halecium dichotomum Allman (A-K) and H. delicatulum Coughtrey (L). A and B. Portions of stem from the distal and proximal ends respectively of the tall form, to show the incorporation of one limb of the dichotomy into a main stem. Peripheral tubes teased apart in B. (TRA 92N.) C and D. Portions of stem from TRA 38J, showing typical dichotomy in C and a unilateral branch in D. E and F. Female and male gonophores. G-J. Details of secon
RMRMKB4E–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 210 ANNALS OF THE SOUTH AFRICAN MUSEUM. Fig. 69. Campanularia integra. A-C, hydrothecae with smooth stems, in narrow view, broad view and t.s. respectively; D and E, hydrotheca with annulated stem in t.s. and broad view respec- tively; F, hydrotheca with thin perisarc; G, female gonophore with round section; H, female gonophore with flat section; J-L, female gonophores dissected from gonothecae, J immature with radial canals containing pigment, K mature, L partly spent and showing medusoid structures
RMRMJ6K6–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. MONOGRAPH ON THE HYDROIDA OF SOUTHERN AFRICA 225. Fig. 74. Gonothyraea loveni. A, stem with female gonophores; B, hydrotheca; C and D, female and male gonophores releasing meconidia; E, female meconidium with planulae; F, empty male meconidium. Obelia sp., medusae. G, newly liberated; H, in a typical swimming position; J, the largest specimen seen; K, edge of bell showing tentacle roots, circular canal and statocyst. Scale in mm/10.. Please note that these images are extracted from scanned page image
RMRMH2EB–. Annals of the South African Museum. Annale van die Suid-Afrikaanse Museum. 442 ANNALS OF THE SOUTH AFRICAN MUSEUM. Fig. 3. Bicorona elegans n. sp. A. Two complete stems from the holotype. B-G. Stages in the development of the hydranth (B-F from A 139, G a mature hydranth from the holotype). H and J. Small, and large, stenotele from A 116. K. l.s. hydranth with female gonophores from L 44.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the
RMRMKFRT–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. MONOGRAPH ON THE HYDROIDA OF SOUTHERN AFRICA 345. Fig. 111. Gattya conspecta. A, stem in anterior view, including first internode and hinge-joint; B, hydrocladium; C, gonotheca. Gattya humilis. D and E, male and female gonophores respectively, the latter with planula; F, pinnate stem in anterior view; G, hydrothecae; H, colony with pinnate and simple stems. Gattya heurteli. J, colony; K, anterior view of sub-branch (pinna); L, hydrothecae. Scale: H and J in cm, the rest in mm/10.. Please note that th
RMRMK0TG–. Annals of the South African Museum. Annale van die Suid-Afrikaanse Museum. HYDROZOA OF THE SOUTH AND WEST COASTS OF SOUTH AFRICA 4b7. Fig. 10. Halecium dichotomum Allman (A-K) and H. delicatulum Coughtrey (L). A and B. Portions of stem from the distal and proximal ends respectively of the tall form, to show the incorporation of one limb of the dichotomy into a main stem. Peripheral tubes teased apart in B. (TRA 92N.) C and D. Portions of stem from TRA 38J, showing typical dichotomy in C and a unilateral branch in D. E and F. Female and male gonophores. G-J. Details of secondary hydrophores.
RMRMN9K6–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 442 ANNALS OF THE SOUTH AFRICAN MUSEUM. Fig. 3. Bicorona elegans n. sp. A. Two complete stems from, the holotype. B-G. Stages in the development of the hydranth (B-F from A 139, G a mature hydranth from the holotype). H and J. Small, and large, stenotele from A 116. K. l.s. hydranth wdth female gonophores from L 44.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perf
RMRMKCJD–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 12 ANNALS OF THE SOUTH AFRICAN MUSEUM. 30H Fig. 1. A. Sphaerocoryne bedoti. B-C. Coryne ?pusilla, C showing production of regeneration bodies. D-E. Cladocoryne floccosa. D, hydranth with male gonophores, and E, discharged and undis- charged macrobasic euryteles. F-L. Zanclea sp. F and G, hydranths from colony commensal with polyzoan; H and J, large bean-shaped nematocyst and large stenotele from the same colony; K, hydranth from colony commensal with coral; L, small bean-shaped nematocyst and large s
RMRHP93E–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. PLATE I FIG. 1. Male colony of Hydractinia just starting to shed sperm, (o) Gono- zooid bearing two white ripe gonophores and two translucent unripe gonophores; (b) feeding polyp; (c} spiral streams of sperm from ruptured gonophores. To- ward lower right, a foggy area full of dispersing sperm. About 6 X. FIG. 2. Female colony of Hydnictiniit just starting to shed eggs, (d) Gono- phores containing ripe unshed eggs; (c) feeding polyps; (/) clusters of eggs just shed; (</) stinging polyps around lip of snail shell. About 6 X
RMRMKCB5–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 92 ANNALS OF THE SOUTH AFRICAN MUSEUM. Fig. 31. Eudendrium ramosum. A and B, male blastostyles; C, young female blastostyles; D, nemato- cysts, from left to right large microbasic eurytele discharged and undischarged, a small microbasic eurytele. Bimeria fluminalis. E, part of colony; F, t.s. female gonophore with egg; G, t.s. female gonophore with planula; H, t.s. male gonophore; J, hydranth and two young female gonophores, one with an egg; K, microbasic eurytele. Abbreviations: e: egg; ect: ectoder
RMRMKBH8–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 146 ANNALS OF THE SOUTH AFRICAN MUSEUM. Fig. 47. Halecium beanii. A, stem with female gonothecae: B and C, regenerated hydrothecae; D, male gonophore; E, female gonophore. Halecium delicatulum. F and G, parts of stem from small form (F) and large form (G); H, male gonophore; J-L, female gonophores, the first two showing hydranths, the third containing planulae. Scale: H-L in mm, the rest in mm/10.. Please note that these images are extracted from scanned page images that may have been digitally enhan
RMRMK9E5–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 86 ANNALS OF THE SOUTH AFRICAN MUSEUM. Fig. 29. Eudendrium deciduum. A, stem; B-D, young female gonophores showing branching spadix; E, part of sterile stem; F, branch with two male blastostyles. Eudendrium motzkos'sowskae. G, mature male blastostyle; H, large macrobasic eurytele, discharged and undischarged. Scale: A in cm, E and F in mm, H in mm/100, the rest in mm/10.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - color
RMRD1GG8–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. CONT Preface i I. Introductory Notes 3 a. The Hydroid Gonophores bearing on classification 4 b. The comparative anatomy of the nourishing individ- uals and the system of the athecate hydroids 7 II. Athecate Hydroids of the northern Atlantic 11 Section Capitata 11 Family Corynidae II Coryne Gaertner 13 Coryne Sarsii (Loven) 14 Loveni (M. Sars) 15 pusilla Gaertner 16 — sp. aff. Hincksi Bounevie 18 Family Myriothelidae 1s Myriothela M. Sars 19 Myriothela phrygia (Fabrieius) 19 Family Tuiulariidae 21 Tu&ularia L in n e 22 Tu
RMRD4YC2–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. CONT Preface i I. Introductory Notes 3 a. The Hydroid Gonophores bearing on classification 4 b. The comparative anatomy of the nourishing individ- uals and the system of the athecate hydroids 7 II. Athecate Hydroids of the northern Atlantic 11 Section Capitata 11 Family Corynidae II Coryne Gaertner 13 Coryne Sarsii (Loven) 14 Loveni (M. Sars) 15 pusilla Gaertner 16 — sp. aff. Hincksi Bounevie 18 Family Myriothelidae 1s Myriothela M. Sars 19 Myriothela phrygia (Fabrieius) 19 Family Tuiulariidae 21 Tu&ularia L in n e 22 Tu
RMRMKBH9–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 246 ANNALS OF THE SOUTH AFRICAN MUSEUM. Fig. 2. Rhizorhagium navis n. sp. A, part of a female colony drawn from living material. B-J, stages in the development of the gonophores drawn from whole mounts. B, a young male gonophorc. C and D, later stages in development of male gonophore. E, the distal region of stage D on a larger scale to show details of layers. F, a mature male gonophore. G, a young female gonophore. H, a mature female gonophore. I, the female gonophore after the escape of the eggs, a
RMRGB4KB–. The Bulletin of zoological nomenclature. Animals. Bulletin of Zoological Nomenclature 63(1) March 2006 9 distinctive species of hydroid (e.g. Bonnevie, 1899a, pp. 7-8, 1899b, pp. 49-50; Stechow, 1923, p. 80; Fraser, 1937, p. 43, pi. 8, fig. 33, 1944, pp. 74-75, pi. 12, fig. 50, 1948, pp. 183, 198; Kramp, 1943, pp. 16, 43; Yamada, 1954, p. 127, text-fig. 15, 1959, p. 26; Calder, 1972, p. 226, pi. 2, fig. 6; Hirohito, 1977, pp. 12-13, text-fig. 3, 1988, p. 88, fig. 31d-h). Eudendrium tenellum auct. is recognizable from the morphology of its hydranths and gonophores (Calder, 1972; Hirohito, 197
RMRMJ8HA–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. j I cm. Fig. 11. The gonophores of the False Bay species of Sertularella. A. S. goliathus Stechow, male; FAL 222 C. B. S. mediterranea Hartlaub, male; FAL 66 M. C. S. arbuscula (Lamouroux); FAL 52 T. D. S. falsa n. sp. from the holotype. E. S.fusiformis (Hincks), male; FAL 52 U. F. S. qfricana Stechow, male; FAL 125 W. G. S. flabellum (All- man), female; FAL 95 Q. H. S. polyzonias (Linnaeus); FAL 207 F. I. S. xantha Stechow (not from False Bay material). J. S. megista Stechow, male; FAL 66 L.. Please
![. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. r>/>; v& ft J i'-'#£ • •,•—•'•?-'- ? .-.•,{? .iv ;, / . .N ?' . • . --'. v. V i , •. ?,' "".'.:' • . , ? Fig. 4. Bimeria fluminalis Annandale. A, portion of colony. B, young male gonophore. C, old female gonophore containing planula. D, a single hydranth and two young female gonophores, one with an egg. E, t.s. male gonophore. F, t.s. young female gonophore with egg and spadix. G, t.s. old female gonophore with planula and remains of spadix. H and I, 1.8. hydranths, I more cont Stock Photo](https://c8.alamy.com/comp/RMH1JA/annals-of-the-south-african-museum-=-annale-van-die-suid-afrikaanse-museum-natural-history-rgtgt-vamp-ft-j-i-iv-n-v-v-i-quotquot-fig-4-bimeria-fluminalis-annandale-a-portion-of-colony-b-young-male-gonophore-c-old-female-gonophore-containing-planula-d-a-single-hydranth-and-two-young-female-gonophores-one-with-an-egg-e-ts-male-gonophore-f-ts-young-female-gonophore-with-egg-and-spadix-g-ts-old-female-gonophore-with-planula-and-remains-of-spadix-h-and-i-18-hydranths-i-more-cont-RMH1JA.jpg ". Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. r>/>; v& ft J i'-'#£ • •,•—•'•?-'- ? .-.•,{? .iv ;, / . .N ?' . • . --'. v. V i , •. ?,' "".'.:' • . , ? Fig. 4. Bimeria fluminalis Annandale. A, portion of colony. B, young male gonophore. C, old female gonophore containing planula. D, a single hydranth and two young female gonophores, one with an egg. E, t.s. male gonophore. F, t.s. young female gonophore with egg and spadix. G, t.s. old female gonophore with planula and remains of spadix. H and I, 1.8. hydranths, I more cont Stock Photo")
RMRMH1JA–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. r>/>; v& ft J i'-'#£ • •,•—•'•?-'- ? .-.•,{? .iv ;, / . .N ?' . • . --'. v. V i , •. ?,' "".'.:' • . , ? Fig. 4. Bimeria fluminalis Annandale. A, portion of colony. B, young male gonophore. C, old female gonophore containing planula. D, a single hydranth and two young female gonophores, one with an egg. E, t.s. male gonophore. F, t.s. young female gonophore with egg and spadix. G, t.s. old female gonophore with planula and remains of spadix. H and I, 1.8. hydranths, I more cont
RMRGT5GH–. Bulletin biologique de la France et de la Belgique. Biology; Natural history. L OVÃGFNESE ET LA SEGMENTATION DES TUBULAIRES. 251 grand nombre d'aiiiros typos, on pont semblo-t-il considéror comme épuisé le problème morphologique, qui consiste à interpréter chaque partie du gonophore, par dérivation à partir do l'un ou l'autre des doux feuillets fondamentaux du CÅlentéré. L'étude histologique ou cytologique a été plus généralement négligée ; aussi peut-on encore attendre d'elle quelques indications, par exemple sur la physiologie dos gonophores. Ceux-ci représentent manifestem
RMRGTRC8–. Bulletin biologique de la France et de la Belgique. Biology; Natural history. geon rt, en forme de figue, à pédicule déjà étranglé, et se pro- longeant lui-même par un stolon grêle Le bourgeon s'insère sur la partie inférieure d'une poche perradiale, assez près d'un plan interradial. A 15 heures le polype est nourri avec des gonophores de Tuhularia. Le lendemain, rassasié, il est à demi contracté ; la couleur rouge est restreinte à son endoderme propre, le bourgeon ayant au contraire une teinte jaune pâle, indice persistant d'un repas de Ciona antérieur au début des observation
RMRGR412–. Bulletin de la Société zoologique de France. Zoology. 174 SÃANCE DU 25 MAI 1920 sur riiypostome se fait à un niveau légèrement inférieur (fig. 1, A). La partie libre des tentacules mesure environ 1 mm. Les sexes sont séparés et nettement dimorphes. Chez la femelle, 7 à 11 (le plus souvent 8 ou 9) blastostyles non rameux, formant des grappes simjjles, relativement courtes, n'atteignent pas l'extrémité des tentacules distaux. Les gonophores, irrégu- lièrement insérés sur tout le pourtour du blastostyle, sont légè- rement ovoïdes, dé- pourvus de canaux radiaires proprement dits
Search Results for Gonophores Stock Photos and Images (214)
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