.vm. LIST OF AUTHORS, ETC. 



Ball, William H. 



On :i Species of Helix from California, supposed to be New, 328 



Daulte, Frank. 



A Well-abused Mollusk. (Translated from the French of H. 



Crosse ) - 394 



Gabb, William M. 



Reply to Mr. Conrad's Criticism on Mr. Gabb's "Report on the 



Palaeontology of California, ------ 87 



Descriptions of Three New Species of Land Sliells from Arizona, 330 



Morch, 0. A. L. 



On the Modern Classification of Mollusks, - - . . 83 



Newcomb, Wesley, M. D. 



Description of a New American Species of Helix, - - 1 



Addition to "Catalogue of Helices Inhabiting the West Coast 



of North America, North of Cape St. Lucas," - - 13 



Descriptions of Achatinellfe, - 209 



Pease, William Harper. 



Descriptions of New Species of Partula, Inhabiting the Tahitian 

 Archipelago, --------- 193 



Remarks on Nudibranchiata Inhabiting the Pacific Islands, with 



Descriptions of Two New Geuera, - - - - 204 



Descriptions of New Species of Land Shells, Inhabiting Poly- 

 nesia, --..---.-. 289 



Try on, George W., Jr. 



On an Abnormal Specimen of Planorbis bicarinatus, - - 3 



Descriptions of New Fresh-water Shells of the United States, 4 



Descriptions of New Exotic Fresh-water Mollusca, - - 8 



Description of a New Species of Rissoa, - - - - 12 



Monograph of the Family Strepomatidte, - - - - 14, 115 



Note on Mr. Pease's Species of Polynesian Phaneropneumona, 82 



Description of a New Species of Vivipara, - - - - 108 



Descriptions of New Fluviatile Mollusca, . - - - 111 



Observations on an Abnormal Specimen of Physa gyrina, - 114 



Note on the Lingual Dentition of the Strepomatidfe, - - 134 



Monograph of Terrestrial Mollusca of the United States, 218, 306 



Description of a New Species of Columna, - - - - 297 



Descriptions of New Species of Melaniidas and Melanopidge, 299 



Description of a New Species of Septifer, - - - - 302 



Description of a New Species of Helix, - - - - 303 



On the Terrestrial Mollusca of the Guano Island of Navassa, 304 



