Shells. 



CLASS XI.— CONCHIFERA. LAM. 

 ORDER I — BIMUSCULO SA , 



Solen. 



ensis, Liu. 



viridis, Say. 

 Solecurtus. 



Caribaeus, Blain. 



maximus, 



costatus, Say. 



fragilis, Pulteney. 

 Glycimeris. 



siliqua, Lam. 



Mya. 



mercenaria, Lin. 

 Anatina. 



Leana, Conrad, 

 convexa, 

 Mactra. 



gigantea, Lam. 

 lateralis, Say. 

 arctata, Conrad, 

 tellinoides, Conrad. , 

 Solemya. 



velum, Say. 

 borealis, Totten. 

 Amphidesma- 



corbuloides, Lam. 

 Corbula. 



ferruginosa, Wood, 

 contracta, Say. 

 Pandora. 



trilineata, Say. 

 Saxicava. 



distorta, Say. 

 Petricola. 



pholadiformis, Lam. 

 dactylus, Say. 

 Sanguinolaria. 



fusca, Conrad. 

 Tellina. 



polita, Say. 

 Lucina. 



divaricata, Lam. 

 Astarte. 



castanea, Say. 

 Cyclas. 



similis, Say. 

 dubia, Say. 

 Cyprina. 



Islandica, Lam. 

 Cytherea. 



convexa, Say. 

 Venus. 



mercenaria, Lin. 

 praeparca, Say. 

 Venus. 



notata, Say. 

 gemma, Totten. 



