TITLES. 9 



177. [Redpield, J. H.] Rectification of the synonymy of certain species 

 o{ Marginella. vi, pp. 172 & 173. 



178. . Catalogue of the known species, recent and fossil, of the 



family MarginelUdce. vi, App. pp. 215-269. 



179. Roberts, S. R. Description of a new species of Cyprcea [C. polita, 

 Hawaiian Is.], iv, p. 70, pi. xv pars. 



180. . Descriptions of two new species of Cyprcea. iv, pp. 250 & 251, 



pi. XV pars. 



181. . Catalogues of the families Porcellanida; and Amphipcrasidce. 



V, App. pp. 189-214. 



182. Stearns, R. E. C. Description of a new species of Ifonoceros, from 

 California, with remarks on the distribution of the North American 

 species, vii, pp. 167-171, pi. xiv. 



183. . Descriptions of new California Shells [Ocinebra]. vii, })p. 172 



& 173, pi. xiv. 



184. Stimpson, W. Diagnoses of newly discovered genera of Gasteropods, 

 belonging to the sub-family Hydrobiince, of the family Rissoidw. i, 

 pp. 52-54, pi. viii pars. 



185. . On certain genera and fi;imilies of Zoophagous Gasteropods. 



i, pp. 55-64. 



186. Tate, R. On the laud and freshwater MoUusca of Nicaragua, v, 

 pp. 151-162, pi. xvi pa7's. 



187. Thomson, J. H. Description of a new species of Mo7itacuta [M. 

 gouldi]. iii, p. 33, pi. i pa7's. 



188. Tryon, G. W. Description of new species of Strepomatidm. i, p. 38, 

 pi. i pars. 



189. . Descriptions of new species of Pholadidoe. i, pp. 39, 40, 285, 



pi. ii pars. 



190. . Observations on the genus lo. i, pp. 41-44. 



191. . Catalogue of MoUusca, collected by Prof. D. S. Sheldon, at 



Davenport, Iowa, i, pp. 68-70. 



192. . Observations on the family Strepomatidce. i, pp. 97-135. 



193. . Catalogue of the .species of Physa, inhabiting the United 



States, i, pp. 165-173. 



194. . Descriptions of new species of Melania. i, pp. 216-218, 



pi. xxii pars. 



195. . Descriptions of new species of Amnicola, Fomatiopsis, Somato- 



gyrus, Gabbia, Hydrobia, and Rissoa. i, pp. 219-222, pi. xxii pars. 



196. . Descriptions of new species of North American Limnceidce. 



i, pp. 223-231, pi. xxii pars, xxiii. 



197. . Review of the Goniobases of Oregon and California. i, 



pp. 236-246, pi. xxiv. 



198. . Catalogue of the species of Limncea inhabiting the United 



States, i, pp. 247-258. 



199. . On the distinctive characters of Bulimus marginatus and 



B. fallax. i, pp. 285 & 286. 



