PLATE CXXI. 



VENUS UNDATA. 



IVAVED 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 

 stria?, 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. Zeol. 4. sp. 51. 



There 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 



