NORTH AMERICAN CONCHOLOGY. 



279 



Name. 

 Cyclas elegans Ad. 

 Cytherea convexa Sai/. 

 Cardium pinnulatum Conr. 



Mortoni Conr. 

 Chiton albus Mont. 



C. sagrinatus Couth. 

 Cingula minuta Gould. 



Turbo minutus Totten. 

 Cerithium Emersonii Ad. 



terebrale Ad. 



nigrocinctum Ad. 



Sayi 3Ike. 



C. reticulatum Totten. 



Greeni Ad. 

 Helix albolabris Saij. 



alternata Say. 



striatella Anth. 



arborea Say. 



electrina Gould. 



chersina Say. 



labyrinthica Say. 



indentata Say. 



pulchella Mull. 

 II. rnlnuta Say. 



•> 



Kellia rubra Turt. 



Cardium ruhrum Mont. 

 Lottia testudinalis Gould. 



Patella uiiueua Say. 

 Limnaea columella Say. 

 macrostoma »S'"^. 

 umbilicata Ad. 

 Littorina rudis Don. 



Tnrho obligatus Say. 

 tenebrosa Gould. 



Turbo vestitus Say. 

 palliata Gould. 



Turbo palUatus Say. 

 Lacuna vincta Gould. 

 L. pertiiaa Conr. 

 Mya arenaria Linn. 



M. incrrcnaria Say. 

 Mactra solidissima Chenin. 

 M. ijiijanlca Lam. 

 lateralis Say. 



Name. 

 Montacuta bidentata Turt. 

 Modiola plicatula Lam. 



Mytilus demissus Dillw. 



barbata Lam. 

 Mytilus edulis Linn. 



var. pellucidus Penn. 

 Nucula limatula Say. 



proxima Say. 

 Natica heros Say. 



triseriata Say. 



duplicata Say. 

 Osteodesma hyalina Couth. 



Mya hyalina Conr. 

 Ostrea borealis Lam. 

 Virginiana List. 

 Odostomia producta Gould. 

 Jaminia producta Ad. 



fusca Gould. 



Jaminia fusca Ad. 



exigua Goidd. 



Jaminia exigua Ad. 

 Pholas costata Linn. 



crispata Linn. 

 Pandora triseriata Say. 



P. na.tiila Sowb. 

 Petricola pholadiformis Lar. 

 P. fornicata Say. 



dactylus Sowb. 

 Pecten concentricus Say. 

 Paludina decisa Say. 

 Pupa milium Gould. 



Tappaniana Ward. 

 Planorbis lentus Say. 



campanulatus Say. 



armigerus Say. 



parvus Say. 



virens. 



bicarinatus Say. 

 Physa heterostropha Say. 



elongata Say. 

 Pleurotoma plicata Ad. 

 Pyrula canaliculata Say. 



spirata Kiener. 



carica Drug. 

 Purpura lapillus Lam. 



