219. Crepidula lingulata, Old. 



220. Crepidula nummaria, Old. 



221. Crepidula rugosa, Nutt. 



222. Hipponyx antiquatus, Linn. 



223. Hipponyx barbatus, Sby. 



224. Hipponyx Grayanus, Mke. 



Vermetidae. 



225. Aletus squamigerus, Cpr. 



226. Spiroglyphua 



227. Spiroglyphus 



Turritellidae. 



228. Mesalia 



229. Mesalia 



Cerithiadae. 



230. Bittium filosum, Old. 



231. Bittium 



232. Bittium 



233. Cerithidea albonodosa, Cpr. 



234. Ce rithidea pullata, Old. 



235. Cerithidea sacrata, Old. 



Litoriiiidac. 



236. Litorina planaxis, Phil. 



237. Litorina plena, Old. 



238. Litorina scutellata, Gld. 



239. Litorina sitchana, Phil. 



240. Lacuna carinata, Gld. 



241. Lacuna unifasciata, Cpr. 



Ovulidae. 



242. Radius variabilis, Sby. 



Cypraeidae. 



243. Luponia albuginosa, Gray. 



244. Luponia spadicea, Swains. 



245. Trivia californica, Gray. 



246. Erato leucophaea, Gld. 



Cancel lariad ae. 



247. Trichotropis cancellata, Hds. 



Pleurotomidae. 



248. Drillia 



249. Daphnella 



250. Mangelia 



251. Mangelia 



252. Bela fidicula, Gld. 



253. Bela 



Conidae. 



254. Conus ravus, Gld. 



Pyramidellidae. 



255. Odostomia gravida, Gld. 



256. Odostomia 



257. Parthenia 



258. Chemnitzia [chocolata]. 



259. Chemnitzia tenuicula, Gld. 



260. Chemnitzia torquata, Gld. 



Eulimidae. 



261. Eulima 



262. 

 263. 

 264. 



265. 

 266. 

 267. 

 268. 

 269. 

 270. 

 271. 



272. 



273. 

 274. 



275. 

 276. 



277. 

 278. 

 279. 



280. 

 281. 

 282. 

 283. 

 284. 

 285. 

 286. 

 287. 

 288. 

 289. 

 290. 



291. 



292. 

 293. 

 294. 

 295. 

 296. 

 297. 



298. 

 299. 

 300. 

 301. 

 302. 

 303. 

 304. 

 305. 



Sby. 



Scalariadae. 



Scalaria australis, Phil. 

 Scalaria [like ochotensis]. 

 Scalaria 



Naticidae. 

 Natica ?clausa, Brod. 

 Natica impervia, Phil. 

 Lunatia algida, Gld. 

 Lunatia caurina, Gld. 

 Lunatia Lewisii, Gld. 

 Neverita Recluziana, Rve. 

 Polinices perspicua, Reel. 



Tritonidae. 

 Argobuccinum oregonense, 



Redf 



Ranellidae. 

 Ranella californica, Hds. 

 Ranella triquetra, Rve. 



Miliiiue. 

 Mitra maura, Nutt. 



Marginella Jewettii, Cpr. 

 01 -villa*. 



Olivella biplicata, Sby. 

 Olivella rufofasciata, Rve. 

 Olivella 



Purpuridae. 



Purpura decemcostata, Midd. 



Purpura emarginata, Desh. 



Purpura lactuca, Esch. 



Purpura ostrina, Gld. 



Monoceros engonatum, Conr. 



Monoceros lapilloides, Conr. 



Nitidella Gouldii, Cpr. 



Nitidella 



Truncaria 



Cerastoma Belcheri, Hds 



Cerastoma foliatum, Esch. 



EBuccinidae. 



Columbella californiana, Gask 

 Columbella carinata, Hds. 

 Columbella gausapata, Gld. 

 Columbella sta-barbarensis, C. 

 Buccinum corrugatum, Rve. 

 Nassa fossata, Gld. 

 Nassa mendica, Gld. 



Muricidae. 



Chrysodomus antiquus, Linn. 

 Chrysodomus Middendorffii, 

 Chrysodomus [ Cooper. 



Chrysodomus sitchana, Midd. 

 Trophon cancellinum, Phil. 

 Trophon corrugatum, Rve. 

 Trophon orpheus, Gld. 

 Pteronotus festivus, Hds. 



(a) 



