S72 



SHELLS AND SHELL-FISH. 



SUB-FAM. VENERIN^. 



Animal with the two siphons shorter, and sometimes 

 united ; shell thick_, strong, and ventricose ; bosses pro- 

 minent. 



CoRBis Lam. Shell transversely roundish j bosses curved 

 in different directions ; cardinal teeth ^ ; lateral re- 

 mote, short, 1^. 



C. fimbriata. Sow. Gen. (fg. 120. b,i.) 



Yenvs Linn. Animal with the two siphons shorter than 

 its shell ; shell nearly round, or oval ; lateral teeth 

 close to the cardinal teeth, -;| ; lateral teeth approxi- 

 mate, and diverging from the summit of the bosses ; 

 surface often rough, (^fig. II9. c) 

 V. purpura. En. Meth. 278. f. 1 . rugosa. lb. 273. f. 4. 



Crassina Lam.* Shell solid, suborbicular; bosses nearly 



central. Cardinal teeth f, unequal in one valve; 



lateral teeth none. 



C. Danmoniensis. {Jig. 120. c.) 



* The other subgenera of Tellina, Venus, Cytherea, and Donax, are not 

 worked out. 



