TELLINAD^E. 



57 



pressed teeth, the hind one cleft. Animal with a 

 large, powerful, cylindrical foot ; gills narrow, pro- 

 longed into the receiving siphon. Burrowers in 

 sand. 



Solecurtus (De Blainv.). Shell swollen, with 

 the beaks nearly central ; hinge-teeth J ; ligament 

 prominent. Animal large, not wholly contained 

 in the shell ; siphons united, and bulging at the 

 bases ; the receiving orifice fringed. 



S. coarctatus. 



candidus. Fig. 76 ; \ n. s. 



Ceratisolen (Forbes). Shell compressed ; hinge 

 complex ; teeth f . Animal compressed ; siphons 

 separate, diverging, fringed. 



; . C. legumen. Fig. 77 ; J n. s. 



Solen (Linn.). Razor-shell. Shell excessively 

 broad, sub-cylindrical, straight, or slightly curved, 

 unequal-sided ; surface divided diagonally ; hinge- 

 teeth J ; ligament long, external. Animal with the 

 mantle open in front, for the passage of a long, 

 thick, truncate foot ; siphons short, united, fringed. 



S. marginatus. 



siliqua. Fig. 78 ; -J n. s. 



ensis. 



pellucidus. 



FAMILY VI. TELLINAD.E. 



Shell free, flattened, usually closed, and equal- 

 yalved ; muscular impressions rounded, polished ; 



