RM2A2METF–Dendracis, Print, Stylaster is a genus of hydroids in the family Stylasteridae
RMW22F72–Archive image from page 13 of The Danish Ingolf-Expedition (1914). The Danish Ingolf-Expedition danishingolfexpe0505ingo Year: 1914 STYLASTERIDAE which the stolons emerge. Examination of serial sections seems to suggest, that the endoderm in the basal part itself is strongly vacuolated; but this may also be due to the imperfect state of preserva- tion. The protoplasm is here strongly granulated and all indicates, that the albumen cells (cf. Schneider 1902 p. 579) form the principal mass of the endoderm in the basal part of the polyp, whilst the nutriment cells are in majority in the endod
RM2MMJ67K–This daisy or mottled brittle star, Ophiopholis aculeata, is climbing over pink branching hydrocoral, Stylaster norvigicus, on the Pacific West Coast
RMKHJWD7–Violet Lace Corals in Surf zone, Distichopora violacea, Christmas Island, Australia
RMK1Y14H–Violet Lace Corals in Surf zone, Distichopora violacea, Christmas Island, Australia
RMW7YMEE–Diver near pink coral (Distichopora violacea), Maldives, Indian Ocean.
RMKG5JXH–Violet Lace Corals in Surf zone, Distichopora violacea, Christmas Island, Australia
RMW7YCXN–Red coral (Errina novazelandiae) in Doubtful Sound, Fiordland National Park, New Zealand.
RM2T1JDPD–Hydrocoral (Distichopora violacea) from shallow water in the Maldives.
RMW7YD1D–Hydroid coral (Errina dendyi) in Dusky Sound, Fiordland National Park, New Zealand.
RM2HT58Y3–Pink hard coral (Stylaster sp.), common under overhangs, or on the roof of caves. Coral Sea, Queensland, Australia
RMW7YCY9–Red coral (Errina novazelandiae) in Doubtful Sound, Fiordland National Park, New Zealand.
RMRD4YD9–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. STVLASTERIDAE The Stylasteridae of the North Atlantic. Pliobothrus Pourtales The colonies are branched fan-shaped, often with dichotomonsly divided brandies and branchlets. The gasteropores and dactylopores open irregularly over the surface of the colony and are not collected into cyclic systems. The dactylopores open out on the top of lower or higher tubular projections. The gasteropores are of varying depth, sometimes closed below by one or more tabulae; both the gasteropores and dactylopores sometimes open without distinc
RMPFH2XY–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. STVLASTERIDAE The Stylasteridae of the North Atlantic. Pliobothrus Pourtales The colonies are branched fan-shaped, often with dichotomonsly divided brandies and branchlets. The gasteropores and dactylopores open irregularly over the surface of the colony and are not collected into cyclic systems. The dactylopores open out on the top of lower or higher tubular projections. The gasteropores are of varying depth, sometimes closed below by one or more tabulae; both the gasteropores and dactylopores sometimes open without distinc
RMMCR62H–. STYLASTERIDAE (HYDROCORALS) FROM SOUTHERN SEAS 37 between the spines. In the terminal branches all intermediate stages occur (see Broch, 1942, p. 44), and von Marenzeller (1903) was accordingly inclined to consider the small pores only as developmental stages of the larger pores of the spines. It is impossible from examination of dried specimens alone to solve this question or to determine whether a real dimorphism exists. But investigation of the soft parts shows that the dactylozooids also exhibit a dimorphic development correlated with the type of pore. The dactylozooids inhabiting the si
RMW271E0–Archive image from page 31 of The Danish Ingolf-Expedition (1914). The Danish Ingolf-Expedition danishingolfexpe0505ingo Year: 1914 24 STYLASTERIDAE must be regarded as characteristic forms of the large biocoenosis of the coral reefs. This is also strengthened by the single discovery of Stylaster gemmascens made in the Hjelte Fjord in the neighbourhood of Bergen, where Dr. O. Nordgaard has obtained two small fragments of colonies from the coral reef there. We thus see that the two Stylaster species which occur on the coast of Norway, form interesting parallels in the animal community of the
RMKHJWDK–Violet Lace Corals in Surf zone, Distichopora violacea, Christmas Island, Australia
RM2RH2570–Lace coral (Stylaster sp.) and the tiny sea squirt Pycnoclavella diminiuta (yellow color form). Photo from Bunaken, North Sulawesi, Indonesia.
RMW7YCYC–Red coral (Errina novazelandiae) in Doubtful Sound, Fiordland National Park, New Zealand.
RMRD1GJ1–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. STVLASTERIDAE The Stylasteridae of the North Atlantic. Pliobothrus Pourtales The colonies are branched fan-shaped, often with dichotomonsly divided brandies and branchlets. The gasteropores and dactylopores open irregularly over the surface of the colony and are not collected into cyclic systems. The dactylopores open out on the top of lower or higher tubular projections. The gasteropores are of varying depth, sometimes closed below by one or more tabulae; both the gasteropores and dactylopores sometimes open without distinc
RMPFH2XA–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. Text-fig. A. Diagram showing the arched development of the pores in Pliobothrus symmetri- cus during the growth of the colony. is reduced on the hind surface of the colony; what may be the cause of this our imperfect knowledge of the biological conditions of the Stylasteridae does not enable us to explain. If we grind down the branches to about the median longitudinal plane we are able to see the pores in the whole of their length (PI. Ill, figs. 19 and 20) and it becomes apparent that these have a typical bend in their cour
RMW22EJC–Archive image from page 12 of The Danish Ingolf-Expedition (1914). The Danish Ingolf-Expedition danishingolfexpe0505ingo Year: 1914 Text-fig. A. Diagram showing the arched development of the pores in Pliobothrus symmetri- cus during the growth of the colony. is reduced on the hind surface of the colony; what may be the cause of this our imperfect knowledge of the biological conditions of the Stylasteridae does not enable us to explain. If we grind down the branches to about the median longitudinal plane we are able to see the pores in the whole of their length (PI. Ill, figs. 19 and 20) and
RMKHJWCW–Violet Lace Corals in Surf zone, Distichopora violacea, Christmas Island, Australia
RM2RJAPEJ–Lace coral (Stylaster sp.) and solitary sea squirts (Polycarpa nigricans) from Ribbn Reef #3, northern Great Barrier Reef, Australia.
RMW7YCWW–Red coral (Errina novazelandiae) in Doubtful Sound, Fiordland National Park, New Zealand.
RMRD4YD7–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. STYLASTERIDAE. Text-fig. A. Diagram showing the arched development of the pores in Pliobothrus symmetri- cus during the growth of the colony. is reduced on the hind surface of the colony; what may be the cause of this our imperfect knowledge of the biological conditions of the Stylasteridae does not enable us to explain. If we grind down the branches to about the median longitudinal plane we are able to see the pores in the whole of their length (PI. Ill, figs. 19 and 20) and it becomes apparent that these have a typical ben
RMW7YD1F–Close up of a hydroid coral (Errina dendyi) in Dusky Sound, Fiordland National Park, New Zealand.
RMPFH2Y7–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. THE DANISH INGOLF-EXPEDITION. VOLUME V. 5. STYLASTERIDAE BY. HJALMAR BROCH. WITH 5 PLATES AND 6 FIGURES IN THE TEXT. ->4K*>«f<- COPENHAGEN. PRINTED BY BIANCO LUNO. 1914.. 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.. Ingolf (Cruiser); Danish Ingolf-Expedition (1895-1896). Copenhagen : H. Hagerup
RMW7YD06–Hydroid coral (Errina dendyi) in Doubtful Sound, Fiordland National Park, New Zealand..
RMW271DG–Archive image from page 31 of The Danish Ingolf-Expedition (1914). The Danish Ingolf-Expedition danishingolfexpe0505ingo Year: 1914 o 200 111. depth 600 - — A Pliobothrus symmetricus A — ineotiipl. geograph. data. • Stylaster gemmascens O — roseiis + (Allopora) norvegicus Text-fig. F. Map showing the localities of the Stylasteridae in the North Atlantic and the Norwegian Sea, - I3°° The study of the occurrence of the North Atlantic Stylasterids shows several biogeographical features of interest (cf. Chart Text-fig. F). — PliobotJirus symmetricus was first described from the waters round a
RMRD4YEY–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. Text-fig. A. Diagram showing the arched development of the pores in Pliobothrus symmetri- cus during the growth of the colony. is reduced on the hind surface of the colony; what may be the cause of this our imperfect knowledge of the biological conditions of the Stylasteridae does not enable us to explain. If we grind down the branches to about the median longitudinal plane we are able to see the pores in the whole of their length (PI. Ill, figs. 19 and 20) and it becomes apparent that these have a typical bend in their cour
RMPFH2X5–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. STYLASTERIDAE 17 whatever here or anywhere else to call the tentacles capitate; they are formed quite like the thread- like tentacles in the athecate hydroids. - Further, the gasterozooid shows in its finer structure no difference from what has been described in Stylaster (Ewtylaster) gemmas- a ecus. In the present species it is also broken up at the base into a circle of columns, the number of which seems mostly to be about 6. — The structure of the dactylozooid also agrees with that in the other northern species of Stylast
RMW7YD0B–Red coral (Errina novazelandiae) in Doubtful Sound, Fiordland National Park, New Zealand..
RMT1H7KD–Discovery reports (1954) Discovery reports discoveryreports26inst Year: 1954 39 STYLASTERIDAE (HYDROCORALS) FROM SOUTHERN SEAS are present also in older parts of the colonies, although they are more prominent on the thinner, apical or peripheral, branchlets than on more central branches of the meshwork (PI. II, fig. 2; PI. Ill, fig. 1). These features seem to indicate that the spines are gradually absorbed by the growth of the surrounding coenosteum, and that they do not grow materially after the incorporation of the branchlet in the mesh- work of the colony. At first glance we might presume
RMRD1GFP–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. THE DANISH INGOLF-EXPEDITION. VOLUME V. 5. STYLASTERIDAE BY. HJALMAR BROCH. WITH 5 PLATES AND 6 FIGURES IN THE TEXT. ->4K*>«f<- COPENHAGEN. PRINTED BY BIANCO LUNO. 1914.. 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.. Ingolf (Cruiser); Danish Ingolf-Expedition (1895-1896). Copenhagen : H. Hagerup
RMPFJMK8–. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. 24 STYLASTERIDAE must be regarded as characteristic forms of the large biocoenosis of the coral reefs. This is also strengthened by the single discover}' of Stylastcr gcmniascrns made in the Hjelte Fjord in the ighbourhood of Bergen, where Dr. O. Nordgaard has obtained two small fragments of colonies ne from the coral reef there. We thus see that the two Stylastcr species which occur on the coast of Norway, form interesting parallels in the animal community of the northern coral reefs to t
RMW7YD02–Hydroid coral (Errina dendyi) in Doubtful Sound, Fiordland National Park, New Zealand..
RMW7YCXC–Red coral (Errina novazelandiae) in Doubtful Sound, Fiordland National Park, New Zealand.
RMW7YCKH–Red coral (Errina novazelandiae) in Dusky Sound, Fiordland National Park, New Zealand.
RMGAARJP–Featherstar (Crinoidea) on red coral (Errina novazelandiae) in Doubtful Sound, Fiordland National Park, New Zealand.
RMW7YCKN–Red coral (Errina novazelandiae) in Dusky Sound, Fiordland National Park, New Zealand.
RMW7YD0C–Starfish (Henricia sp) on a red coral (Errina novazelandiae) in Doubtful Sound, Fiordland National Park, New Zealand..
RMRD4YD0–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. 24 STYLASTERIDAE must be regarded as characteristic forms of the large biocoenosis of the coral reefs. This is also strengthened by the single discovery of Stylaster gemmascens made in the Hjelte Fjord in the neighbourhood of Bergen, where Dr. O. Nordgaard has obtained two small fragments of colonies from the coral reef there. We thus see that the two Stylaster species which occur on the coast of Norway, form interesting parallels in the animal community of the northern coral reefs to the Stylasterids of the tropical coral r
RMPFH2XP–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. STYLASTERIDAE. Text-fig. A. Diagram showing the arched development of the pores in Pliobothrus symmetri- cus during the growth of the colony. is reduced on the hind surface of the colony; what may be the cause of this our imperfect knowledge of the biological conditions of the Stylasteridae does not enable us to explain. If we grind down the branches to about the median longitudinal plane we are able to see the pores in the whole of their length (PI. Ill, figs. 19 and 20) and it becomes apparent that these have a typical ben
RMW7YD0K–Dorid nudibranch (Aphelodoris luctuosa) on a red coral (Errina novazelandiae) in Doubtful Sound, Fiordland National Park, New Zealand..
RMRD1GF8–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. STYLASTERIDAE. which the stolons emerge. Examination of serial sections seems to suggest, that the endoderm in the basal part itself is strongly vacuolated; but this may also be due to the imperfect state of preserva- tion. The protoplasm is here strongly granulated and all indicates, that the albumen cells (cf. Schneider 1902 p. 579) form the principal mass of the endoderm in the basal part of the polyp, whilst the nutriment cells are in majority in the endoderm of the free wall of the zooid. Apart from this localisation of
RMPFH2XE–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. STYLASTERIDAE. which the stolons emerge. Examination of serial sections seems to suggest, that the endoderm in the basal part itself is strongly vacuolated; but this may also be due to the imperfect state of preserva- tion. The protoplasm is here strongly granulated and all indicates, that the albumen cells (cf. Schneider 1902 p. 579) form the principal mass of the endoderm in the basal part of the polyp, whilst the nutriment cells are in majority in the endoderm of the free wall of the zooid. Apart from this localisation of
RMRD1GHY–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. STYLASTERIDAE. Text-fig. A. Diagram showing the arched development of the pores in Pliobothrus symmetri- cus during the growth of the colony. is reduced on the hind surface of the colony; what may be the cause of this our imperfect knowledge of the biological conditions of the Stylasteridae does not enable us to explain. If we grind down the branches to about the median longitudinal plane we are able to see the pores in the whole of their length (PI. Ill, figs. 19 and 20) and it becomes apparent that these have a typical ben
RMPFH2WY–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. 24 STYLASTERIDAE must be regarded as characteristic forms of the large biocoenosis of the coral reefs. This is also strengthened by the single discovery of Stylaster gemmascens made in the Hjelte Fjord in the neighbourhood of Bergen, where Dr. O. Nordgaard has obtained two small fragments of colonies from the coral reef there. We thus see that the two Stylaster species which occur on the coast of Norway, form interesting parallels in the animal community of the northern coral reefs to the Stylasterids of the tropical coral r
RMRD1GFA–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. Text-fig. A. Diagram showing the arched development of the pores in Pliobothrus symmetri- cus during the growth of the colony. is reduced on the hind surface of the colony; what may be the cause of this our imperfect knowledge of the biological conditions of the Stylasteridae does not enable us to explain. If we grind down the branches to about the median longitudinal plane we are able to see the pores in the whole of their length (PI. Ill, figs. 19 and 20) and it becomes apparent that these have a typical bend in their cour
RMPFH2WR–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. o. 200 111. depth 600 - — A Pliobothrus symmetricus A — ineotiipl. geograph. data. • Stylaster gemmascens O — roseiis + (Allopora) norvegicus Text-fig. F. Map showing the localities of the Stylasteridae in the North Atlantic and the Norwegian Sea, - I3°° The study of the occurrence of the North Atlantic Stylasterids shows several biogeographical features of interest (cf. Chart Text-fig. F). — PliobotJirus symmetricus was first described from the waters round about Florida and must be fairly common there between 190 and 300 m
RMRD4YEX–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. STYLASTERIDAE. which the stolons emerge. Examination of serial sections seems to suggest, that the endoderm in the basal part itself is strongly vacuolated; but this may also be due to the imperfect state of preserva- tion. The protoplasm is here strongly granulated and all indicates, that the albumen cells (cf. Schneider 1902 p. 579) form the principal mass of the endoderm in the basal part of the polyp, whilst the nutriment cells are in majority in the endoderm of the free wall of the zooid. Apart from this localisation of
RMPFH2X7–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. STYLASTERIDAE *3 The fan-shaped colonies are in general branched in one plane and not recurved; they display a marked difference between small branches, main branches and stem. The cyclosystems are placed laterally and alternately on the small branches; their main axis forms an angle of 450 or more with the longitudinal axis of the branch. The cyclosystems are circular except on the thick main branches, where they have a more oval form. The cyclosystem shows from 8 to 17, in general 9—11 quite separate dactylopores, each pro
RMRD4YEM–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. 24 STYLASTERIDAE must be regarded as characteristic forms of the large biocoenosis of the coral reefs. This is also strengthened by the single discovery of Stylaster gemmascens made in the Hjelte Fjord in the neighbourhood of Bergen, where Dr. O. Nordgaard has obtained two small fragments of colonies from the coral reef there. We thus see that the two Stylaster species which occur on the coast of Norway, form interesting parallels in the animal community of the northern coral reefs to the Stylasterids of the tropical coral r
RMPFH2Y3–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. CONTENTS.. Stylasteridae. Pas Introduction I The Stylasteridae of the North Atlantic 3 Pliobothrus Po u r t a 1 es 3 Pliobothrus symmetrica* Pourtales 3 Stylasler G r a y 7 Stylaster gemmascens (Esper) 8 roseiis (Pallas) 12 — norvegicus (Gunnerus) 15 Remarks on the affinities and systematic position of the Hydrocorallines 19 Zoogeographical remarks oil the North Atlantic Stylasteridae 22 Literature 4189G. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readabilit
RMRD4YEP–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. STYLASTERIDAE 17 whatever here or anywhere else to call the tentacles capitate; they are formed quite like the thread- like tentacles in the athecate hydroids. - Further, the gasterozooid shows in its finer structure no difference from what has been described in Stylaster (Ewtylaster) gemmas- a ecus. In the present species it is also broken up at the base into a circle of columns, the number of which seems mostly to be about 6. — The structure of the dactylozooid also agrees with that in the other northern species of Stylast
RMRD1GJ4–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. THE DANISH INGOLF-EXPEDITION. VOLUME V. 5. STYLASTERIDAE BY. HJALMAR BROCH. WITH 5 PLATES AND 6 FIGURES IN THE TEXT. ->4K*>«f<- COPENHAGEN. PRINTED BY BIANCO LUNO. 1914.. 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.. Ingolf (Cruiser); Danish Ingolf-Expedition (1895-1896). Copenhagen : H. Hagerup
RMRD3RWY–. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. 24 STYLASTERIDAE must be regarded as characteristic forms of the large biocoenosis of the coral reefs. This is also strengthened by the single discover}' of Stylastcr gcmniascrns made in the Hjelte Fjord in the ighbourhood of Bergen, where Dr. O. Nordgaard has obtained two small fragments of colonies ne from the coral reef there. We thus see that the two Stylastcr species which occur on the coast of Norway, form interesting parallels in the animal community of the northern coral reefs to t
RMRD4YD2–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. STYLASTERIDAE 17 whatever here or anywhere else to call the tentacles capitate; they are formed quite like the thread- like tentacles in the athecate hydroids. - Further, the gasterozooid shows in its finer structure no difference from what has been described in Stylaster (Ewtylaster) gemmas- a ecus. In the present species it is also broken up at the base into a circle of columns, the number of which seems mostly to be about 6. — The structure of the dactylozooid also agrees with that in the other northern species of Stylast
RMRD4YER–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. STYLASTERIDAE *3 The fan-shaped colonies are in general branched in one plane and not recurved; they display a marked difference between small branches, main branches and stem. The cyclosystems are placed laterally and alternately on the small branches; their main axis forms an angle of 450 or more with the longitudinal axis of the branch. The cyclosystems are circular except on the thick main branches, where they have a more oval form. The cyclosystem shows from 8 to 17, in general 9—11 quite separate dactylopores, each pro
RMRD4YCX–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. o. 200 111. depth 600 - — A Pliobothrus symmetricus A — ineotiipl. geograph. data. • Stylaster gemmascens O — roseiis + (Allopora) norvegicus Text-fig. F. Map showing the localities of the Stylasteridae in the North Atlantic and the Norwegian Sea, - I3°° The study of the occurrence of the North Atlantic Stylasterids shows several biogeographical features of interest (cf. Chart Text-fig. F). — PliobotJirus symmetricus was first described from the waters round about Florida and must be fairly common there between 190 and 300 m
RMRD1GF3–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. STYLASTERIDAE *3 The fan-shaped colonies are in general branched in one plane and not recurved; they display a marked difference between small branches, main branches and stem. The cyclosystems are placed laterally and alternately on the small branches; their main axis forms an angle of 450 or more with the longitudinal axis of the branch. The cyclosystems are circular except on the thick main branches, where they have a more oval form. The cyclosystem shows from 8 to 17, in general 9—11 quite separate dactylopores, each pro
RMRD1GHE–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. o. 200 111. depth 600 - — A Pliobothrus symmetricus A — ineotiipl. geograph. data. • Stylaster gemmascens O — roseiis + (Allopora) norvegicus Text-fig. F. Map showing the localities of the Stylasteridae in the North Atlantic and the Norwegian Sea, - I3°° The study of the occurrence of the North Atlantic Stylasterids shows several biogeographical features of interest (cf. Chart Text-fig. F). — PliobotJirus symmetricus was first described from the waters round about Florida and must be fairly common there between 190 and 300 m
RMRD4YF5–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. CONTENTS.. Stylasteridae. Pas Introduction I The Stylasteridae of the North Atlantic 3 Pliobothrus Po u r t a 1 es 3 Pliobothrus symmetrica* Pourtales 3 Stylasler G r a y 7 Stylaster gemmascens (Esper) 8 roseiis (Pallas) 12 — norvegicus (Gunnerus) 15 Remarks on the affinities and systematic position of the Hydrocorallines 19 Zoogeographical remarks oil the North Atlantic Stylasteridae 22 Literature 4189G. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readabilit
RMRD1GFN–. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. CONTENTS.. Stylasteridae. Pas Introduction I The Stylasteridae of the North Atlantic 3 Pliobothrus Po u r t a 1 es 3 Pliobothrus symmetrica* Pourtales 3 Stylasler G r a y 7 Stylaster gemmascens (Esper) 8 roseiis (Pallas) 12 — norvegicus (Gunnerus) 15 Remarks on the affinities and systematic position of the Hydrocorallines 19 Zoogeographical remarks oil the North Atlantic Stylasteridae 22 Literature 4189G. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readabilit
RMRCD373–. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 39 STYLASTERIDAE (HYDROCORALS) FROM SOUTHERN SEAS are present also in older parts of the colonies, although they are more prominent on the thinner, apical or peripheral, branchlets than on more central branches of the meshwork (PI. II, fig. 2; PI. Ill, fig. 1). These features seem to indicate that the spines are gradually absorbed by the growth of the surrounding coenosteum, and that they do not grow materially after the incorporation of the branchlet in the mesh- work of the colony. At first gl
RMRCD374–. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. STYLASTERIDAE (HYDROCORALS) FROM SOUTHERN SEAS 37 between the spines. In the terminal branches all intermediate stages occur (see Broch, 1942, p. 44), and von Marenzeller (1903) was accordingly inclined to consider the small pores only as developmental stages of the larger pores of the spines. It is impossible from examination of dried specimens alone to solve this question or to determine whether a real dimorphism exists. But investigation of the soft parts shows that the dactylozooids also exh
RMRCW77W–. Elemente der palaeontologie. (Palaeozoologie.). Paleontology. 106 Coelenterata. Stöcke. Skelet aus anastomosirenden Kalkfasern, mit zahlreichen Vertical- röhrchen, die durch quere Platten abgetheilt sind und im Centrum eine Axe aufweisen. Eocän. Porosphaera Steinm. Kugelige oder knollige Stöcke mit einem Skelet aus groben, anastomosirenden, undeutlich spiral geordneten Kalkfasern, welches von zahlreichen Radialtuben durchsetzt wird. Kreide. Ob Cylindrohypliasma Steinm. aus dem Kohlenkalk zu den Milleporiden gehört, ist noch fraglich. ß. Stylasteridae. Verästelte Polyparien, deren kelchartige
RMRCD36N–. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. STYLASTERIDAE (HYDROCORALS) FROM SOUTHERN SEAS 45 indebted to the director of Institut Royal des Sciences Naturelles de Belgique, Dr V. van Straelen, for the exact data concerning these localities: 12. v. 1898, 71° 14' S, 890 14' W, depth 450 m. 18. v. 1898, 710 18' S, 88° 02' W, depth 450 m. 27. v. 1898, 710 15' S, 870 39' W, depth 100 m. 28. v. 1898, 710 19' S, 870 37' W, depth 435 m. These data are of great interest combined with the localities from the Discovery collections.. Fig. 12. The lo
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