248 DA.VENPORT ACADEMY OF NATURAL SCIENCES 



Genus, SEMELE, Schum. 



243. S. EQUALis, Say. East coast. 



244. S. LAETA, H. & A. Ad. I have never seen it. 



Genus, DONAX, L. 



245. D. VARIABILIS, Say. East coast. 



246. D. PROTRACTUs, Con. Same locality. 



Family, Solenid^, 

 Genus, SOLEN, L. 



247. S. ViRiDis, Say. East coast. 



Genus, ENSIS, Schum. 



248. E. Ambricantjs, Gould. Same locality. 



Genus, SILIQUARIA, Schum. 

 '249. S. GIBBA, Speng. Syn., <S. Caribceus, Lam. 



250. S. DivisA, Sjjeng. (Solen centralis, Sa,Y.) Both are from the east 

 coast at St. Augustine. 



Family, Myacid^. 

 Genus, MYA, L. 



251. M. ARENARiA, L. Syn., M. acuta. Say; M. mercenaria, Say, 

 From the east coast. 



Genus, LYONSIA. Turton. 



252. L. HYALINA, Con. East coast. 



Genus, CORBULA, Bmg. 



253. C. CONTRACT A, Say. 



254. C. LIMATULA, Con. 

 Both coasts. 



Family, Anatinid^. 

 Genus, PERIPLOMA, Schum. 



255. P. PAPYRACEA, Say. 



256. P. LEANA, Con. 

 Both from the east coast. 



Genus, PANDORA, Brug. 



257. P. trilineata, Say. Loc, east coast. 



Family, PholadiDuE. 

 Genus, PHOLAS, L. 



258. P. cost at A, L. 



259. P. TRUNCATA, Say. 



260. P. Casipechensis, Gmelin. 



