NORTH AMERICAN CONCHOLCGY. 



93 



No. 





No. 



36 



Corbula contracta Say. 



67 



37 



Pandora trilineata Say, 

 P. nasuta Sowb. 



68 



33 



Osteodesma hyalina Couth. 

 Mya hyalina Conr. 





39 



Anatina papyratia Say. 



69 



40 



Cochlodesma Leana Couth. 







Anatina Leana Conr. 



70 



41 



Thracia Conradi Couth. 



71 





T. declivis Conr. 



72 



42 



Mactra solidissima Chemn. 



73 





M. gigantea Lam. 



74 



43 



ovalis Gould. 



75 





M. similis Gray. 



76 



44 



lateralis Say. 



77 



45 



Cumingia tellinoides Conr. 







Mactra tellinoides Conr. 



78 



46 



Mesodesma arctata Gould. 



79 





Mactra arctata Conr. 



80 



47 



Jauressii De Joannis. 



81 



48 



Montacuta bidentata Gou/rf. 



82 



49 



Kellia rubra Turton. 



83 



50 



Saxicava distorta Say. 



84 



51 



Petricola pholadiformis 







P. fornicata Say. ^Lam. 



85 



52 



dactylus Sowb. 



SQ 



63 



Sanguine laria fusca Conr. 



87 





Psamriiobiu fusca Say. 



88 



54 



sordida Gould. 



89 





Tdlina sordida Couth. 



90 



55 



Tellina tenera Say. 



01 



56 



tenta Say. 





57 



calcaria ? 



92 



58 



Lucina radula Gould. 



93 





Tdlina radula Mont. 



94 



59 



divaricata Lam. 



95 



CO 



flexuosa Gould. 

 Cryp/odon Jlexuosa Turt. 



96 



61 



Cyclas dubia Say. 



97 



62 



elegans Adams. 





63 



partumeia Say. 



98 



64 



similis Say. 



99 



65 



Astarte castanea Say. 



100 





Crassina castanea Lam. 



101 



66 



lactea Brod., Sowb. 



102 



Astarte quadrans Gould. 



sulcata Fleming. 

 Venus sulcata Mont. 

 Crassina sulcata Lam. 

 A. danmoniensis Sowb. 

 Cyprina Islandica Lam. 



Venus Islandica Lin. 

 Cytherea convexa Say. 

 Venus mercenaria Lin. 



notata Say. 



praeparca Say (var.) 



fluctuosa Gould. 



gemma Totten. 

 Cardium Groenlandicum 



IslandicumZ/n. \^Chemn. 

 C. pubescens Coutb. 



Mortoni Conr. 



pinnulatum Conr. 

 Cardita borealis Conr. 

 Area pexata Say. 



transversa Say. 

 Nucula limatula Say. 



minuta Turton. 



N. tenuisulcata Couth. 



myalis Couth. 



navicularia Couth. 



proxima Say. 



sapotilla Gould. 



tenuis Turton. 



thraciaeformis Storer. 

 Unio complanatus Lea. 

 U. purpureus Say. 



cariosus Say. 



ochraceus Say. 

 Alasmodon arcnata. Barnes. 



marginata Say. 



undulata Barnes. 

 Unio undulata Say. 

 Anodon fluviatilis Lea. 

 A. cataracta Say. 



implicata Say, 



undulata Say. 

 Mytilus edulis IJn. 



var. pellucidus Pennant. 

 Modiola barbata Lam. 



