CLASSIFIED LIST OF THE SPECIES. 261 



Family CYPRINIDJ^— Continued. 



Genus Veniella— -Continued. 



V. inflata Cowrad L. 



V. rhomboidea Conrad , U. 



V. subovalis Conrad L. 



V. trapezoidea Conrad L. 



V. trigona Gahh X. 



Genus Ambonicardium Whitfield. 



A. Cooki Whitfield P, C 



Genus Isocardia Lamarck 



I. Conradi Gabb - M. 



Genus SpHiERiOLA Stoliczka. 



S. umbonata Whitfield L. 



Family CYRENID^. 



Genus CoRBicuLA MiiMfeld. 



C. annosa Conrad P. C, 



C. emacerata Whitfield P. C. 



Suborder SI:N^U0PALLIATA. 



Family VENERID^. 



Genus Callista Poli, 



C. Delawarensis Gabb L. 



Genus Caryatis Boemer. 



C. ovalis Whitfield E. 



C. ? veta Whitfield U. 



Genus Aphrodina Conrad. 



A. Tippana Conrad L. 



Genus Cyprimeria Conrad. 



C. excavata Morton i. 



C. densata Conrad L. 



C. depressa Conrad L, 



C. Heilprini Whitfield L. 



C. spissa Conrad L, 



Genus DosiNiA Scopoli. 



D ? erecta Whitfield i. 



D. Gabbi Whitfield L, 



