NORTH AMERICAN CONCHOLOGT. 



12T 



Page. 





Page 



275 



Tellina versicolor Cozzens. 



277 



275 



Lucina flexuosa Mont. 



277 



275 



radula Mont. 



277 



275 



Astarte castanea Say. 



277 



275 



mactracea Linsley. 



277 





(With a wood-cut.) 



277 



275 



quadrans Gould. 



277 



275 



sulcata Mont. 



277 



276 



Cyclas dubia Sai/. 



278 



270 



elegans Adams. 



278 



27G 



minor Mighels. 



278 



276 



nitida Migheh. 



278 



276 



orbicularia Barratt. 



27S 



276 



partumeia Sajj. 



278 



276 



rhomboidea Saij. 





276 



similis Saij. 



278 



276 



truncata Linslcy. 



278 



276 



Cyprina Islandica Lam. 



278 



276 



Cytherea convexa Say. 



278 



276 



morrhuana Linsley. 



278 



276 



Venus gemma Totten. 



278 



276 



mercenaria Say. 



278 



27 G 



notata Say. 



278 



276 



Cardium Groenlandicum 



278 





Chemn. 



278 



276 



Mortoni Conr. 



278 



275 



pinnulatum Conr. 





276 



Cardita borealia Conr. 



278 



276 



Area pexata Say. 



278 



276 



transversa Say. 



279 



276 



Nucula limatula Say. 



279 



277 



proxima Say. 



279 



277 



sapotilla (Jould. 



279 



277 



tenuis Turton. 



279 



277 



Unio carioBUS Say. 



279 



277 



complanatus Solander. 



279 



277 



compressus Lea. 



279 



277 



heterodon Lea. 



279 



277 



nasutus Say. 



279 



277 



ochraceus Say. 



279 



277 



Pequottinus LinsUy. 



279 



277 



radiatus Barnes. 



279 



277 



Alasmodonta arcuata Barn. 



279 



277 



marginata Say. 



279 



277 



undulata Say. 



279 



Anodonta areolata Swains. 



fluviatilis Dillwyn. 



Housatonica Linsley. 



implicata Say. 



marginata Say. 



undulata Say. 



subcylindracea Lea, 

 Modiola discors Lam. 



glandula Totten. 



modiolus Turton. 



nexa Gould. 



plicatula Lam. 

 Mytilus edulis Linn. 



striatus De Kay. 



M. pellucidus Pennant. 

 Pecten concentricus Say. 



Islandicus Chemn 



fuscus Linsley. 

 Ostrea borealis Lam. 



costata De Kay. 



Virginica Gmel. 

 Anomia aculeata Gmel. 



electrica Linn. 



ephippium Linn. 



squamula Linn. 

 Chiton fulminatus Couth. 

 C. Ixvirjatus Fleming? 



ruber Lowe. 



Patella ? 



Lottia alveus Conr. 



testudinalis Mailer. 

 Crepidula alata Zea. 



convexa Say. 



depressa Say. 



fornicata Lam. 



glauca Say. 



plana Say. 

 Ancylus fuscus Adams, 



rivularis Say, 



tardus Say. 

 Bulla debilis Gould. 



insculpta Totten, 



obstricta Gould. 



oryza Totten. 



triticea Couth, 



