80 CALIFOENIA ACADEMY OF SCIENCES. 



MOLLUSCA (Continued). 



222. mendica Gould 233 



223. mendica Godld, var. cooperi Forbes 234 



224. perpinguis Hinds 234 



225. tegula Reeve 235 



226. versicolor C. B. Adams, var. hooveri, var. nov 236 



Family LX. CoIumbelUda 236 



Genns Columbella Lamarck 236 



227. solidula Eeeve, var. praecursor, var. nov 236 



Subgenus Anachis H. & A. Adams 237 



228. (A.) minima, sp. nov 237 



Subgenus J^sopus Gould 237 



229. [M.) chrysalloidea Carpenter 237 



230. {M.) oldroydi, sp. nov 238 



Subgenus Astyris H. & A. Adams 238 



231. (A.) califoruiaua Gaskoin 238 



232. (A.) gausapata Gould 239 



233. (A.) gausapata Gould, var. carinata Hinds 240 



234. (A.) tuberosa Carpenter 240 



Genus Amphissa H. & A. Adams 241 



235. corrugata Eeeve 241 



236. veutricosa, sp. nov 242 



237. versicolor Dall 242 



Family LXI. Muricida: 243 



Genus Murex Linne 243 



Subgenus Chicoreus Mostfort 243 



238. (C.) leeauus Dall 243 



239. (C.) trialatus Sowerey 243 



Subgenus Pteronotus Swaixson 244 



240. (P.) festivus Hinds 244 



Subgenus Pterorhytis Conrad 244 



241. (P.) foliatus Martyn 245 



242. (P. ) nuttalli Conrad 245 



243. (P.) monoceros Sowerby 246 



Genus Monoceros Lamarck 246 



244. engouatum Conrad 246 



245. lapilloides Conrad 247 



Genus Chorus Gray 247 



246. belcheri Hinds 247 



Genus Euplenra H. & A. Adams 248 



247. muriciformis Broderip 248 



248. muriciformis, var. curta, var. nov 249 



Genus Trophou Montfort 249 



Subgenus Boreotrophoii Fischer 249 



249. (B.) cerritensis, sp. nov 249 



250. (B.) gracilis Perry 250 



251. (B.) multioostatus Eschscholtz 251 



252. (B.) pedroana, sp. nov 251 



253. (B.) scalariformis Gould 252 



254. (B.) stuavti Smith 252 



255. (B.) orpheiis. var. priecursor, var. nov 253 



256. (B.) teuuisculptus Carpenter 253 



257. (B.) triaugulatus Carpenter 254 



Genus Ocinebra Leach 254 



258. barbareusis Gabb 254 



259. foveolata Hinds 255 



260. iuterfossa Carpenter 255 



261. keepi, sp. nov 256 



262. lurida Midde.ndorff 256 



263. lurida Midd., var. aspera Baird 257 



