MOLLUSCA 169 



Janthina janthina Linne (Floating Shell) 



(J. communis Lamarck; J. fragilis Lamarck) 



Fig. 27 



A pelagic species, that is one that floats on the 

 surface of the sea, usually far from shore. After 

 storms they are occasionally washed upon the 

 beaches from Nantucket to the "West Indies. The 

 shell is very thin and is usually purple in color. 

 The animal is kept on the surface of the water by 

 a gelatinous secretion from the foot. Very rare 

 on New Jersey beaches (one record from Cape May 

 Point) ; more common on Florida beaches. 



Fig. 27 

 Janthina janthina Linne 



Stilifer stimpsoni Verrill 



A small, elongate shell that lives among the 

 spines of the Green Sea Urchin (Strongylocerdrotus 

 drobachiensis) , usually in deep water. One record 

 from 35 fathoms off New Jersey. 



