NORTH AMERICAN CONCHOLOGY. 



211 



Pa. PI. Tig. 



328 viii bis 9-11 

 480 xii 8-9 



618 XX 



685 



6-8 



8-10 



Name. Locality. 



Cumingia tellinoides Conr. 

 Saxicava arctica Phil. Arctic Seas. 



Mya arctica Linn. 



Solen minutus Linn. 



Donax rhomhoidea Poli. 



Cardita arctica Brug. 



Mytilus prcBcisus Mont. 



Hyatella arctica Lam. 

 minuta Turt. 



Anatina arctica Turt. 



Rhomboides rugosus Bl. 



Cardita lithophagella Da Costa. 



Saxicava rhomboides Desh. 



Mya elongata Brocchi ? 



Saxicava elongata Bronn. 



Mytilus carinatus Goldf. 

 Dosiiiia concentrica Bom. Gulf of Mexico. 



Venus concentrica Born. 



Cytherea concentrica Lam. 



Artemis concentrica Phil. 

 Cyprina Islandica Lam. Northern' Seas. 



Pectunculus maximiis List. 



Venus Islandica Linn. 



Pectunculus major Da Costa. 



Venus bucardium Born. 



Arctica vulgaris Sch. 



C. arctica Turt. 



Venus cequalis Sowb. 



C. cequalis PhiL 

 maxima Wood. 

 angulata Nyst. 

 islandicoides Nyst. 



Vol. lU 184^-1850. 

 149 

 150 



182 



216 xxxi 1,2 



217 xxix 



Astarte castanea Say. 

 arctica (Iray. 



Venus borealis F. & H. 

 A. ci/prinoides DuvaL 

 Wilhami Brown. 

 Cardita borealis Conr. 



Venpricardia harealis Conr. 

 Unio pyramidatus Lea. 

 U. cnrdiarea Say. 

 viytiloides Raf. ? 

 arcaeformis Lea. 

 U. nexus Say. 



North America, &c. 

 North America, &c. 



Nantucket. 



