CLASSIFIED LIST OF THE SPECIES. 261 



Family CYPRINID^— Continued. 

 Genus Veniella— Continued. 



V. inflata Conrad L. 



V. rhomboidea Conrad U. 



V. subovalis Conrad L. 



V. trapezoidea Conrad L. 



V. trigona Gabh L. 



Genus Ambonicardium Whitfield. 



A. Cooki Whitfield P. C. 



Genus Isocardia Lamarck. 



I. Conradi Gabb 31. 



Genus Sph^riola StoliczTca. 



S. umbonata WJiitfield L. 



Family CYRENID^. 



Genus CoRBicuLA Muhlfeld. 



C. annosa Conrad P. C. 



C. emacerata Whitfield P. C. 



Suborder SDTUOPALLIATA. 



Family VENERID^. 

 Genus Callista Poll. 



C. Delawarensis Oabb L. 



Genus Caryatis Roenier. 



C. ovalis Whitfield E. 



C. 1 veta Whitfield U. 



Genus Aphrodina Conrad. 



A. Tippana Conrad L. 



Genus Cyprimeria Conrad. 



C. excavata Morton L. 



C. . densata Conrad L. 



C. depressa Conrad L. 



C. Heilprini Whitfield L. 



C. spissa Conrad L. 



Genus Dosinia Scopoli. 



D ? erecta Whitfield L. 



D. Gabbi Whitfield L. 



