ON MOLLrSCA OP THE WEST COAST OT NORTH AMERICA. 



6F51 



251. Lepeta caecoides 



252. Gadinia (Rowellia) . . . 



253. Fissurella volcano 



254. GlypMs aspera 



-55. densiclathrata . . . 



256. Lucapina crenulata 



257. Puncturella cuoullata . . . 



258. galeata 



259. Cooperi 



260. Haliotis Craolierodii . . . 



261. splendens 



262. corrugata 



26.3. rufesoens 



264. Kamtschatkana . . . 



265. Phasianella compta 



266. Pomaulax imdosus 



267. Pachypoma gibberosum . 



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tTew. Jj. A. |r3U..thB. Ins. Ken. 



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FDIL 

 DIL 

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 FI 

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Lord. Swan. 



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251. Lepeta cacaiies, Pn. s. Like cmca, but apex turned back. Farallone L-,. 



teste R. D. Darbishire. 



Family Gadiniadce. 



252. HowelUa, so. Genus proposed by Cooper: tentacles flattened^ pectinated. Cat. 



Is. Cp. Far. Is. JEtow. 



Family FissureUidee. 



253. JPtssMreHo fo?cc!«o, Rve. = ornate, Nutt. Approaches Perwujawo : hole vaiiable. 



254. Olyphis aspera, Tisch.. =Lmeolm, Gxa,y=cratiUa, Gld. Large, coai-sely sculp- 



tured, with colour-rays. 



255. GlypMs densiclathrata, Rve. Smaller : with closer, finer sculpture. 



256. Zucapina crenulata, Sby. Tank. Veiy large : internal. 



257. PanctweUa cucullata, Gld.E.E. Large, with strong, variable ribs, 15-40. 



Hole simple. 



258. Pancticrella galeata, Gld. E.E. Scarcely differs from noachina, but tripartite 



process more strongly marked. 



259. PanctureUa Cooperi, n. s. Outside like galeata, but without props to the 



lamina. 30-120 fin. not r. Cp. 



Family Haliottdee. 



360. Haliotis Oracherodii, Leach, auct. The trade species, smooth, dark olive : holes 

 5—9. Var. Califomiensis, holes 9, 10, II. 



261. Haliotis splendens, Rve. Flatter, grooved, lustrous. Holes 4r-7. Below tide : 



on rocks, Op. 



262. Haliotis corrugata. Gray. Large, arched, very rough. Holes 3-5. Below 



tide : on rocks, Cp. 



263. Haliotis rufescens, Swains. Large, flatter, waved, I'ioh orange-red. Holes 



3-5. Below tide : on rocks, Cp. 

 26i, Haliotis Kamtschatkana, Jonas. Small, thin, arched, waved. Holes 4, 5. 

 Below tide : on rocks, Far. Is. C^. 



Family Trochidts, 



265. Phasianella compta, Gld. Otia. Maz. Gat. no. 284. like pullus, a little longer 



and flatter; but operc. bevelled and striated, r Var. puMoides, exactly like 

 Henn shells : ? var. elatior, dwarfed, longer and flatter : var. punctuiata, witli 

 close rows of dots ; pillar chinked. 8-20 fm. Cj}. 



266. Pomaidax undorna. Wood. Very large : operculum with 2 ridgea. 



267. Pachypoma gibberosum, Chem. ?=in<equale, Mart. Large, rough: operc. 



swollen, simple. (Dead.) 



137 



