CONCHIFERA. 



Pboladidac. 



* Teredo navalis Lin. 



* Teredo Norvagioa, Spgl. 



* Teredo Thompsonii, Tryon. 



* Teredo megotara, Hanley. 



* Teredo dilatata, Stm. 



* Teredo (Lyrodus) chloriticus, Gld. 



* Xylotrya palmulata, Lam. 



* Xylotrya ? 



* Pholas costata, Lin. 



* Pholas truncata, Say. 



* Pholas (Zirfea) crispata, Lin. 



Solenidae. 



* Solen ensis, Lin. 



* Solecurtus gibbus, Spengl. 



* Solecurtus divisus, Spengl. 

 Machcera squama, Bl. 



* Maohaera costata, Say. 



* Solemya velum, Say. 



* Solemya borealis, Totten. 

 Panopaea arctica, Lam. 



* G-lycimeris siliqua, Ch. 



Myadae. 



* Mya arenaria, Lin. 



* Mya truncata, Lin. 



CortiiilidaB. 

 Corbula contracta, Say. 



* Neaera pellucida, St. 



Paiidoridae. 



* Pandora trilineata, Say. 



Aiiatinidae. 

 Lyonsia hyalina, Conr. 



* Lyonsia arenosa, Moll. 

 Anatina papyracea, Say. 

 Cochlodesma Leana, Conr. 



* Thracia Conradi, Couth. 



* Thracia myopsis, Beck. 



* Thracia truncata. Migh. 



