ON MOLLTTSCA OF THE WEST COAST OF NORTH AMERICA. 



251. Lepeta caecoides 



252. Gadinia (Rowellia) 



253. Fissurella volcano 



254. Glyphis aspera 



255. densiclathrata 



256. Lucapina crenulata 



257. Puncturella cucullata 



258. galeata 



259. Cooperi 



260. Haliotis Craclierodii 



261. splendens 



262. corrugata 



! 263. rufescens 



264. Kamtschatkana 



265. Phasianella compta 



266. Pomaulax undosus 



267. Pachypoma gibberosum . . 



Kutt. .Tew. 1>. A. li-M.'.-ths. In*. Ken. 



M 



?B 

 D 



M 



B 



C 

 C 



C 



BD 

 C 



oc 



C 

 C 



p 

 p 



C 

 C 

 C 

 C 

 C 

 C 

 C 



FDIL 

 DIL 

 D 

 D 

 FI 

 D 

 L 

 M 



~ 



Lord. Swan. 



V 



?v 



Cooper. 



I 



DI 



M 



T 



MI 



MDI 



I 



M 

 DI 

 MDI 

 1)1 

 MB 



251. Lepeta cteco'ides, ?n. s. Like cceca, but apex turned back. Farallone I/,, 



teste R. D. Darbishire. 



Family Gadiniadce. 



252. Rotvellia, sp. Genus proposed by Cooper : tentacles flattened, pectinated. Cat. 



Is. Cp. Far. Is. Row. 



Family Fissurellidee. 



253. Fissurella volcano, Rve. = ornata, Nutt. Approaches Peruviana : hole variable. 



254. Glyphis aspera, Esch.=Zwco/w, Gray=cro&Yw, Gld. Large, coarsely sculp- 



tured, with colour-rays. 



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



256. Lucapina crenulata, Sbv. Tank. Very large : internal. 



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



Hole simple. 



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



process more strongly marked. 



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



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



Family Haliotidce. 



260. Haliotis Cracherodii, Leach, auct. The trade species, smooth, dark olive : holeg 



5-9. Var. Califomiensis, holes 9, 10, 11. 



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



on rocks, Cp. 



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



tide : on rocks, Cp. 



263. Haliotis rufescens, Swains. Large, flatter, waved, rich orange-red. Holes 



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



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



Below tide : on rocks, Far. Is. Cp. 



Family Trochidee. 



265. Phasianella compta, Gld. Otia. Maz. Cat. no. 284. Like puUus, a little longer 



and natter ; but operc. bevelled and striated, r Var. puttoides, exactly like 

 Herm shells : ? var. elatior, dwarfed, longer and flatter : var. punciwata, with 

 close rows of dots ; pillar chinked. 8-20 fin. Cp. 



266. Pomaulax undosus, Wood. Very large : operculum with 2 ridges. 



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



swollen, simple. (Dead.) 



137 



