Esq., of Petersburg. Va. The following is a list of the 

 species : 



CRETACEOUS. 



Anomia argcntaria, Morton. 

 Exogyra coslata, Say. 



I Belemnites americanus. 



I 



Cardita planicosta, Lam. 

 Turntella Mortoni, Conrad. 

 Ostrea compressirostra, Say. 

 " sellaeformis, Conrad. 



EOCENE. 



Cucullcna gigantea. 

 Scutella Lyelli, Conrad. 



" macrophora, Raveuel. 



MIOCENE. 



ADomia ephippium, Lin. 

 " RufRiii, Conrad. 

 Astarte concentrica, Conrad. 



" undulata, Say. 

 Cardita granulata, Say. 

 " tridentata, Say. 

 Cardium sublineatuin, Conrad. 

 Carditamera arata, Conrad. 

 Chama corticosa, Conrad. 

 " congrcgata, Conrad. 

 " arcinella, Lam. 

 Crepidula fornicala, Say. 

 " costata, Morton. 

 " spinosa, Conrad. 

 Crassatella undulala, Say. 

 Cytherea reposta, Conrad. 

 " Sayan a, Conrad. 

 Fissurella redimicula, Say. 

 Cyrena densata, Conrad. 

 Dispotaea ramosa, Conrad. 

 Artemis acetabulumj Conrad. 

 Area lienosa, Say. 

 " limula, Conrad. 

 " incilis, Say. 

 Pectunculus subovatus, Lam. 



" lenliformis, Conrad. 



" aratus, Conrad. 



" tricenarius, Conrad. 



" parilis, Conrad. 



" tumulus, Conrad. 



Venus tridacnoidcs, Ijam. 

 " Mortoni, Conrad. 

 " Rileyi, Conrad. 



Venus capax, Conrad. 



" mercenaria, Conrad. 



" cribraria, Conrad. 



" alveata, Conrad. 

 Fulgur contrarius. 

 Natica heros, Say. 



" duplicata, Say, 

 Oliva littcrata, Lam. 



" canaliculata, Lea. 

 Dentalium denlale, Lin. 

 Solarium. 

 Mactra congesta, Conrad. 



" lateralis, Say. 

 Ostrea disparilis, Conrad. 



" sculpturala, Conrad. 



" subfalcata, Conrad. 



Ostrea . 



PanopcTa reflexa, Say. 

 Perna maxillata, Lam. 

 Plicatula murginata, Say. 

 Pecten Mortoni, Rav. 



" eboreus, Conrad. 



'' Jeffersonius, Say. 

 Teredo fistula, H. C. Lea. 

 Petaloconchus sculpturata. Lea. 

 Conus adversarius, Conrad. 



" diluvianus. 

 Cypra;a caroliniana, Conrad. 

 Fasciolaria mutabilis, Conrad. 



" rhomboidea, Rogers. 



Fusus quadricostatus, Say. 

 Buccinum Tuomeyi, Lea. 

 Turritella alticostata. 



Dr. Gould stated that he had received, for the Society, 

 from Thomas A. Green, Esq., of New Bedford, three living 

 specimens of Pholas costata ^ and three of Pholas truncata, 



Say. 



