GASTEROPODA. 



PTEROPODA. 



251. Clione limacina, Phipps. 



252. Heterofusus balea, Moll. 



253. Limacina helicina, Phipps. 



254. Psyche globulosa, Rang. 



255. Cleodora pyramidata, Lin. 



256. Hyalea trispinosa, Les. 



NUDIBRANCHIATA. 



257. Limapontia zonata, Grd. 



258. Place- branchus simplex, Grd. 



259. Tergipes rupium, Moll. 



260. Aeolis bostoniensis, Couth. 



261. Aeolis farinacea, Gould. 



262. Aeolis stellata, Stm. 



263. Aeolis purpurea, Stm. 



264. Aeolis diversa, Couth. 



265. Aeolis gymnota, Couth. 



266. Aeolis Olrikii, Moerch. 



267. Aeolis salmonacea, Couth. 



268. Aeolis mananensis, Stm. 



269. Doto coronata, Gtnel. 



270. Dendronotus Reynoldsii, Couth. 



271. Ancula sulphurea, Stm. 



272. Proctaporia fusca, 0. Fair. 



273. Polycera Holbollii, Moll. 



274. Polycera illuminata, Gould. 



275. Doris planulata, Stm. 



276. Doris liturata, Moll. 



277. Doris acutiuscuia, Stp. 



278. Doris obvelata. Mull. 



OPISTHOBRANCHIATA. 



279. Philine sinuata, Stm. 



280. Philine quadrata, JPood. 



281. Philine punctata, Moll. 



282. Philine lineolata, Couth. 



283. Scaphander puncto-striata, M. 



284. Diaphana hiemalis, Couth. 



285. Diaphana debilis, GWrf. 



286. Utriculus Gouldii, Couth. 



287. Utriculus semen, Reeve. 



288. Utriculus turritus, Mffll. 



289. Utriculus biplicatus, Lea. 



290. Utriculus pertenuis, J%A. 



291. Utriculus canaliculatus, Say. 



292. Cylichna nucleola, Reeve. 



293. Cylichna alba, Brown. 



294. Cylichna oryza, Tott. 



295. Bulla sculpta, -ffeeve. 



296. Bulla incincta, Migh. 



297. Bulla Reinhardtii, Moll. 



298. Bulla solitaria, Say. 



299. Tornatella puncto-striata, 



C. B. Ad. 



PROSOBRANCHIATA. 



300. Chiton mendicarius, Migh. 



301. Chiton apiculatus, Say. 



302. Chiton cinereus, Lin. 



303. Chiton marmoreus, 0. Fair. 



304. Chiton laevis, Penn. 



305. Chiton albus, Zin. 



306. Amicula Emersonii, Couth. 



307. Entalis striolata, Stm. 



308. Entalis pliocena, T. fr II. 



309. Tectura testudinalis, Mull. 



310. Tectura alveus, Con. 



311. Lepeta caeca, Mull. 



312. Pilidium rubellum, 0. Fabr. 



313. Crepidula unguiformis, Zam. 



314. Crepidula fornicata, Lin. 



315. Crepidula convexa, Say. 



316. Crepidula aculeata, Gm. 



317. Crucibulum striatum, Say. 



318. Cemoria noachina, Z/tn. 



319. Fissurella alternata, Say. 



320. Clypidella pustula, Lin. 



321. Janthina fragilis, Brug. 



322. Scissurella crispata, Flem. 



323. Adeorbis costulata, J/67/. 



324. Margarita minutissima, Migh. 



325. Margarita helicina, 0. Fabr. 



326. Margarita Vahlii, Moll. 



327. Margarita argentata, Gould. 



328. Margarita Harrisoni, Hancock. 



329. Margarita obscura, CWA. 



330. Margarita acuminata, Migh. 



331. Margarita varicosa, Migh. 



332. Margarita cinerea, Couth. 



333. Margarita groenlandica, Ch. 



334. Trochus occidentalis, 3%A. 



335. Turbo crenulatus, Gm. 



336. Cochliolepis parasitica, Stm. 



337. Skenea planorbis, Fabr. 



338. Rissoella? eburnea, Stm. 



339. Rissoella? sulcosa, 1%L 



340. Rissoa minuta, Tott. 



341. Rissoa robusta, Lea. 



342. Rissoa turriculus, Lea, 



343. Rissoa latior, 3%A. 



344. Rissoa aculeus, GWd. 



345. Rissoa saxatilis, Moll. 



346. Rissoa multiline ata, Stm. 



347. Rissoa Mighelsii, Stm. 



348. Rissoa castanea, Moll. 



349. Rissoa exarata, /w. 



350. Rissoa carinata, Migh. 



351. Rissoa scrobiculata, Moll. 



352. Lacuna vincta, Mont. 



353. Lacuna glacialis, Moll. 

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