SECTION A.] NORTH AMERICAN CONCHOLOGY. 



629 



Rll$!^ell. — Retrospect of some of the Shells found in Essex 

 County : by Rev. John Lewis Russell. (From Journal of 

 the Essex County Natural History Society. Third and last 

 number. Salem, Mass., 1852.) 



[No descriptions are given. — W. G. B.] 



110 Anodon fluviatilis Lea. 



110 implicatus Saij. 



111 Astarte castanea Say. 

 Ill Anotaia ephippium Linn. 

 Ill Ancylus rivularis Say. 

 Ill Auricula bidentata. 



Ill Buccinum obsoletum Ad. 



Ill plicosum Mhe. 



Ill trivittatum Ad. 



Ill undatum Linn. 



Ill Bulla triticea Couth. 



Ill Cancellaria Couthouyi Ja^, 



111 Cardium pinnatulum Conr. 



Ill Crepidula fornicata Lam. 



Ill plana Say. 



Ill Chiton fulminatua Couth. 



Ill Cingula minuta. 



Ill Cochlodesma Leana Conr. 



Ill Cumingla tellinoides Conr. 



Ill Cyprina islandica Lam. 



Ill Fusus decemcostatus Say. 



Ill Islandicus Mart. 



Ill harpularius Couth. 



Ill Glycimeris siliqua Lam. 



Ill Lacuna vincta. 



Ill Littorina palliata. 



Ill ludis. 



Ill tenebrosa. 



Ill Lottia alveua. 



Ill testudinalis, 



111 Machaera costata. 



Ill Mactra solidissima Chemn. 



Ill Margarita arctica Leach. 



111 cinerea. 



112 obscura. 



112 undulata Sowb. 



Page. 



112 Mesodesma arctata. 



112 Modiola discrepans 3Iont. 



112 modiolus Turt. 



112 plicatula Lam. 



112 Mytilus edulis Litin. 



M. pellucidus Penn. 

 112 pellucidus. 



112 Mya arenaria Zjnn. 

 112 Natica clausa Br. ^ Sowb. 

 112 heros Say. 



112 triseriata Say. 



112 Nucula limatula Say. 

 112 minuta Turt. 



112 myalis Couth. 



112 Pandora trilineata Say. 

 112 Pecten magellanicus Lam. 

 112 Petricola pholadiformis 

 112 Pholascrispata-^/Kw. [Lam. 



F. lamtllata Turt. 

 112 Purpura lapillus Lam. 



r. imbricuta. 

 112 Pyramis striatula Couth. 

 112 Rostellaria occidentalis 



Bi^ck. 

 112 Sanguinolaria fusca Conr. 

 112 sordida Couth. 



112 Saadcava distorta Say. 

 112 Scalaria GraenlandicaC/iew. 



112 Solen ensis Linn. 



113 Solemya velum Say. 

 113 Thracia Couradi Couth. 

 113 Tellina polita Say. 



113 tenera Say. 



113 Terebratula caput-ser- 



pentis Lam. 

 113 Teredo navalis Linn. 



