PLATE CXXI, 



VENUS UNDATA, 



WAVED VENUS. 



GENERIC CHARACTER. 



Bivalve, Hinge furnished with three teeth ; two near each other, 

 the third divergent from the beaks. 



SPECIFIC CHARACTER. 



AND 



SYNONYMS. 



Shell orbiculated, convex, thin, transversely marked with very fine 

 striae, and waved at the margin. 



Venus Undata : testa orbiculata convexa tenui transversim subti- 

 lissime striata margine undata. 



Venus Undata, waved. — With thin, convex, orbiculated shells, 

 of a white colour, tinged with yellow, and 

 marked with thin concentric stria ; waved at the 

 edges. Perm. Brit. ZqoI. 4. sp. 51. 



TJiere can be no doubt that the shell figured and defcribed by 



Pennant in the fourth volume of his British Zoology, No, 51, is of 



D 4 



