u 



BIBLIOGRAPHY OF 



26 Pecten Islandicus Lam. 

 26 concentricus Say. 



26 Ostrea Canadensis Lam. 

 26 Virginica Lam. 



Class XII, 

 Order II. 



Chiton. 



One species. 

 Patella alveus Conrad. 



amoena Sai/. 

 Crepidula fornicata Say. 



glauca Say. 



plana Say. 



convexa Say. 



26 



25 

 26 

 26 

 26 

 27 

 27 



27 

 27 

 27 

 27 

 27 

 27 

 27 

 27 

 27 

 27 

 27 

 27 

 27 

 27 

 27 

 27 

 27 

 27 

 27 

 27 

 27 

 27 



27 

 27 

 27 

 27 



Page. 



26 Ostrea edulis Lin. (var.) 

 26 Anomia ephippium Lin. 

 26 Terebratula. 



An undescribed recent species. 



MOI.I.USCA. 

 Gasteropoda. 



27 Ancylus rivularis Say. 

 27 Velutina rupicola Conrad. 

 27 Bulla solitaria Say. 

 27 Limax. 



One or more species. 

 27 Testacella. 



One or more species. 



Order III. Traclielipoda. 



Heliis albolabris Say. 



thyroidus Say. 



alternata Say. 



perspectiva Say. 



glaphyra Say. 



arborea Say. 



tridentata Say. 



hirsuta Say. 



fraterna Say. 



labyrinthica Say. 



minuta Say. 



subglobosa (MSS.) 

 Pupa fallax Say. 



corticaria Say. 

 SuCcinea ovalis Say. 



campestris Say. 

 Auricula myosotis Drap. 

 Planorbis trivolvis Say. 



bicarinatus Say. 



armigerus Say. 



campanulatus Say, 



parvus Say. 



Two or more other species. 

 Physa heterostropha Say. 

 Lymncea catascopium Say. 



columella Say. 



ovata Lam. 



Two or more other species. 



27 Valvata arenifera Lea. 



27 Paludina decisa Say. 

 27 limosa Say. 



27 lapidaria Say. 



One other species. 



27 Natica duplicata Say 

 27 heros Say. 



27 triseriata Say. 



28 Melampus bidentalis Say. 

 28 Vermetus lumbricalis Lam. 

 28 Lacuna pertusa Conrad 



28 fusca (MSS.) 



28 Turbo obligatus Say. 



28 palliatus Say. 



28 vestita Say. 



28 irroratus Say. 



28 inflatus Totten. 



28 minutus Totten. 



28 Turritella alternata Say. 



28 bisuturalis Say. 



28 Fusus corneus Say. 



28 cinereus Say. 



28 decemcostatus Say. 



28 Pyrula caniculata Lam. 



28 carica Lam. 



28 Ranella caudata Say. 



28 Purpura lapillus Lam. 



28 imbricata Lam. 



