. East coast marine shells : descriptions of shore mollusks together with many living below tide mark, from Maine to Texas inclusive, especially Florida, with more than one thousand drawings and photographs . Fig. 41 Egg float of Janthina. Now life size pelagic, living some miles from land, fas- tened to float in which eggs are attached; float composed of vesicles filled with air. Fig. 41. Radula with a great number of elongated teeth, no central ones. Carnivor- ous and like Epitonium secretes a purple fluid when disturbed. GENUS JANTHINA Roeding 1798 (VIOLET SHELLS) Eyes Invisible, tentacles
. East coast marine shells : descriptions of shore mollusks together with many living below tide mark, from Maine to Texas inclusive, especially Florida, with more than one thousand drawings and photographs . Fig. 41 Egg float of Janthina. Now life size pelagic, living some miles from land, fas- tened to float in which eggs are attached; float composed of vesicles filled with air. Fig. 41. Radula with a great number of elongated teeth, no central ones. Carnivor- ous and like Epitonium secretes a purple fluid when disturbed. GENUS JANTHINA Roeding 1798 (VIOLET SHELLS) Eyes Invisible, tentacles forked so that each appears like a pair. Float found in both sexes, some species viviparous (producing young alive). JANTHINA JANTHINA Linne (J. communis, J. fragilis Lam.). Whorls sloping, convex, violet white above, solid color below. Di- ameter inches. This the largest Janthina upon our coast is sometimes bloviTi ashore in consid- erable numbers after violent storms. When
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Keywords: ., bookcentury1900, bookcollectionameri, bookcollectionbiodiversity
