TELLINAD^. 57 



pressed teetli, the liincl one cleft. Animal witli 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 | ; ligament 

 prominent. Animal large, not wholly contained 

 in the shell ; siphons united, and bulging at the 

 bases ; the receiving orifice fringed. 



S. coarctatus, 



canclidus. Fig. 76 ; ^ n.s. 



Ceratisolen (Forbes). Shell compressed ; hinge 

 complex ; teeth |. Animal compressed ; siphons 

 separate, diverging, fringed. 



; C, legumen. Fig. 77 ; ^ n. s. 



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

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

 unequal-sided ; surface divided diagonally ; hinge- 

 teeth I ; 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 ; -!^ n. s. 



ensis. 



pellucidus. 



^'rimrrrfT^g: 



^ 



78 



Family VI. Tellixad^. 



Shell free, flattened, usually closed, and equal- 

 valved ; muscular impressions rounded, polished ; 



