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![A treatise on malacology; or, Shells and shell fish . ^;- ^]Melanella. Pla.axis. I The use of the last, or additional column, which con-tains the genera of the entire sub-family, is chieflyfor the purpose of showing that Melatoma, while itpreserves its analogy to Pleurotoma, agrees also withPlanaxis in having the base notched, and with Mela-nella by its thickened inner lip. (187.) The next genus is that of Cerithidea. Wehave now come to the cyclostiform type, which, withthe elongate form of Scalaria, has an effuse and circularaperture, with the outer lip dilated into a broad fringe,and a very Stock Photo](https://c8.alamy.com/comp/2AKM15B/a-treatise-on-malacology-or-shells-and-shell-fish-melanella-plaaxis-i-the-use-of-the-last-or-additional-column-which-con-tains-the-genera-of-the-entire-sub-family-is-chieflyfor-the-purpose-of-showing-that-melatoma-while-itpreserves-its-analogy-to-pleurotoma-agrees-also-withplanaxis-in-having-the-base-notched-and-with-mela-nella-by-its-thickened-inner-lip-187-the-next-genus-is-that-of-cerithidea-wehave-now-come-to-the-cyclostiform-type-which-withthe-elongate-form-of-scalaria-has-an-effuse-and-circularaperture-with-the-outer-lip-dilated-into-a-broad-fringeand-a-very-2AKM15B.jpg "A treatise on malacology; or, Shells and shell fish . ^;- ^]Melanella. Pla.axis. I The use of the last, or additional column, which con-tains the genera of the entire sub-family, is chieflyfor the purpose of showing that Melatoma, while itpreserves its analogy to Pleurotoma, agrees also withPlanaxis in having the base notched, and with Mela-nella by its thickened inner lip. (187.) The next genus is that of Cerithidea. Wehave now come to the cyclostiform type, which, withthe elongate form of Scalaria, has an effuse and circularaperture, with the outer lip dilated into a broad fringe,and a very Stock Photo")
RM2AKM15B–A treatise on malacology; or, Shells and shell fish . ^;- ^]Melanella. Pla.axis. I The use of the last, or additional column, which con-tains the genera of the entire sub-family, is chieflyfor the purpose of showing that Melatoma, while itpreserves its analogy to Pleurotoma, agrees also withPlanaxis in having the base notched, and with Mela-nella by its thickened inner lip. (187.) The next genus is that of Cerithidea. Wehave now come to the cyclostiform type, which, withthe elongate form of Scalaria, has an effuse and circularaperture, with the outer lip dilated into a broad fringe,and a very
RMRGD20M–. Bulletin of the Southern California Academy of Sciences. Science; Natural history; Natural history. Buix. So. Cal. Ac. Sci. 43 (2) 1944 AViLLETT. MOLLUSKS. PLATE 14 1. Volvulella tenuissima Willett, type, X 10. 2. Melanella rosa Willett, type, X 4. 3. Nuculana iurchi Willett, type, X 3%. 4. Pliiline californica Willett, tjMoe, X TV^. 78. 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.. Southern California Academy of Scienc
RMRCHY99–. Die Mollusken-Fauna Mitteleuropa's. Mollusks. 672 Section Jlelanella Swainson. Gehäuse: eiförmig. 1. Melanella Holandri Feriissac. Melania Holandri Ferussac. — — Brot Monogr. Melan. p. 11 t. 1 f. la—k. Thier: dunkel blaugrau, Kopf rüsselförmig, vorne ab- gestutzt, in einer trichterförmigen Vertiefung die Mund- öffnung tragend; Fühler lang, borstenförmig, an der Basis die Augen tragend; Fusssohle wie bei Vivipara quer zu- sammenklappbar; Zunge bandförmig. Fig. 455.. Mel. Holandri. Gehäuse: eiförmig, bauchig, festschalig, hornfarbig- einfarbig, oder mit 3—4 braunen Bändern, nicht selten ganz s
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