TELLINADJ3. 



59 



Animal with very long siphons ; palps large, 

 triangular. 



S. piperata. Fig. 81 ; .J n. s. 



Syndosmya (Kecluz). Shell small, oval, white, 

 shining ; hinder side the shorter ; beaks directed 

 backward ; hinge-teeth wanting or minute, laterals 

 distinct ; pallial sinus wide, shallow. 



S. alba. Fig. 82 ; n. s., and hinge mag. 

 intermedia, 

 prismatica. 

 tenuis. 



Psammobia (Lamk.). Shell oblong, smooth, or 

 striated radiately ; covered with a thin epidermis ; 

 hinge-teeth f ; pallial sinus deep, reducing the 

 front to a line. 



P. vespertina. 



Ferroensis. Fig. 83 ; \ n. s. 



tellinella. 



costulata. 



Diodonta (Deshayes). Shell convex, with scale- 

 like lines of growth ; no epidermis*; hinge-teeth f , 

 the single tooth cleft. Animal with a small foot ; 

 siphons long, fringed. 



D. fragilis. Fig. 84 ; n. s. 



Tellina (Linn.). Shell rounded in front, angu- 

 lar, and slightly folded behind; teeth kf,i; the 



