244 



BIBLIOGRAPHY OF 



Ko. 





No. 



45 



Lacuna neritoidea Gould. 



91 



46 



fusca Gould. 



92 



47 



vincta Alont. 



93 



48 



Littorina palliata Say. 



94 



49 



rudis Don. 





50 



tenebrosa Mont. 



95 



51 



Lucina flexuosa Mont. 



96 



52 



Machera costata Say. 



97 



53 



Mactra gigantea Lam. 



98 



54 



Margarita arctica Leach. 



99 



55 



argentata Gould. 



100 



56 



cinerea Couth. 



102 



57 



obscura Couth. 





68 



undulata Sowerhy. 



103 



59 



Mesodesma arctata Conrad. 



104 



60 



Modiola discrepans Mont. 



105 



61 



glandula Totten. 



106 



62 



modiolus Linn. 



107 



63 



nexa Gould. 



108 



64 



plicatula Lam. 



109 



65 



Mya areuaria Linn. 





65 



Mytilus edulis Linn. 





67 



Natica clausa Sowerhy. 





68 



heros Say. 



110 



69 



immaculata Totten. 



111 



70 



pusilla Say. 



112 



71 



triseriata Say. 



113 



72 



Cascoensis Miyhels. 



114 



73 



delphinodonta Mighels. 



115 



74 



limatula Say. 



116 



75 



minuta Gmelin. 



117 



76 



myalis Couth. 



118 



77 



Nucula navicularis Couth. 



119 



78 



Portlandioa Hitchcock. 



120 



79 



proxima Say. 



121 



80 



sapotilla Gould. 



122 



81 



tenuis Mont. . 



123 



82 



thraciaeformis Storer. 



124 



83 



Patella alveus Conrad. 



125 



84 



amcena Say. 



126 



85 



Candida Couth. 



127 



86 



Pecten Islandicus Milll. 



128 



87 



Magellanicus Gmelin. 



129 



89 



Pleurotoma decussataCow^A. 



130 



90 



violacea Adams. 



131 



Purpura lapillus Linn. 

 Sanguinolaria fusca Say. 

 Saxicava distorta Linn. 

 Scalaria Greenlandica 



Chemn. 

 Sigaretus haliotoides Linn. 

 Skenia serpuloides Mont. 

 Solemya borealis Totten. 



velum Say. 

 Solen ensis Linn. 



siliqua. 

 Terebratula caput-ser- 



pentis Linn. 

 Thracia truncata Mighels. 

 Trichotropis borealis Sowb. 

 Turritella erosa Couth. 

 Velutina laevigata Linn. 



zonata Gould. 

 Venus gemma Totten. 



mercenaria Linn. 



FRESH-WATER SHELLS. 



Alasmodon arcuata Barnes. 



marginata Say. 



undtilata Say. 

 Amnicola lustrica Say. 



porata Say. 

 Ancylus rivularis Say. 



tardus Say. 

 Anodon cataracta Say. 



implicata Say. 



marginata Say. 

 Cyclas calyculata Drap, 



minor Mighels. 



partumeia Say. 



similis Say. 

 Limnsea columella Say. 



decollata Mighels. 



desidiosa Say. 



humilis Say. 

 Paludina decisa Say. 

 Physa ancillaria Say. 



heterostropha Say. 



hypnorum Drap. 



