238 BULLETIN NO. 30, UNITED STATES NATIONAL MUSEUM. 



Ostrea dispariliv, Coniad, pi. Ixvi, flga. 1, 2 312 



Ostrea panzana, Conrad 313 



Ostrea percraxna, Coniad, \>l. Ix vii, fig. 3 iVi 



Ostrea sculpturata, Conrad, pi. Ixx, fig. 2 313 



Ostrea mbfalcata, Conrad, pi. Ixviii, figs. 1-3 313 



Ostrea subjecta, Courad 313 



Ostrea layloriana, Gabb, pi. Ixvii, figs. 1, 2 313 



Ostrea titan, Coniad 313-314 



Ostrea veleriann, Conrad, pi. Ixx, fig. 1 314 



Ostrea virginica, Giuelin (—0. virginiana, Lamarck) 314 



PLIOCENE. 



Ostrea atwuodi, Gabb 314 



Ostrea bourgeoisii, Esmond, pi. Ixxi, fig. 1 214 



Ostrea heermanni, Conrad 314 



Ostrea vespertina, Conrad, pi. Ixxi, figs. 2-4 315 



POST-PLIOCENE. 



Ostrea conchaphila, Carpenter 315 



Ostrea fuadata (Say ?), F. S. Holmes 315 



Ostrea gallus, Valenciennes 315 



Ostrea lurida, Carpenter, pi. Ixxii, figs. 2, 3 316 



Ostrea veatchii, Gabb, pi. Ixxii, fig. 1 816 



