ON MOLLUSCA OF THE WEST COAST OF NORTH AMERICA. 663 
Nutt.| Jew. | B. A. ||Smiths. Ins.| Ken. | Lord.|Swan.| Cooper. 
Be oe: See Sapa 
461. Monoceros-engonatum ..| B | —| C D —/|—|/— DI 
4616. Poar. spiratum ... i =.=) = _ —|—|— I 
462. lapilloides.....4.... Bij —j| C D |—|—|— I 
463, Ocinebra lurida and vars. | — |B fs.| — FI. | —} V| V |Mjuo.I 
—— interfossa.......+-- —|—|— MI BeliMeiivd W jun, 
465, ? PonlsOnLa tees | C |? B| — L pce ee ees a 
466. Cerostoma foliatum ..|—|—]| O ||PODIfs) P| V{ V — 
467. INE RALINT 5,5 o1e faye Balbo -- —|—|— DI 
468. monoceros ......-- —|—|C L —|—|— ?D 
469. Chorus Belcheri ........ —j,;—|D I —|—|— D 
470, Nitidella Gouldii........ —| B]|— M P|}—|vV| MD 
471, Pedicularia Californica ... —|—|—]} @ |—/—j]— — 
472, Pteronotus festivus,..... —|C|L D —|—|— D 
473. Muricidea Californica....| — | — | LC — —|—|—)] MBDI 
474, Trophon multicostatus ..) — | — | — — Ea? NOON — 
475. MCIESTIR es <4 s'h 0s —j|—/|P — P| Vji— = 
476. triangulatus ...... a) = —|—|— E 
477, Siphonalia Kellettii ....) — | —| ? D —|—|—]| BD 
478, —— fuscotincta ........ —| B|— — —|—|— — 
479, Chrysodomus tabulatus ..| — |B fs.| — — /PPjni V| V PT 
480, —— liratus............ —|—|A vi —|—|— — 
461. Monoceros engonatum, Conr.=unicarinatum, Sby. Brown-dotted, with sharp 
osterior keel, smoothish. Beach, Cp. 
461. Monoceros ?yar. spiratum (Blainv.). Light colour; scaly; horn not developed. 
462. Monoceros lapilloides, Conr.= punctatum, Gray +-brevidens, Conr. Not should- 
ered: shape of lapillus. 
463. Ocinebra lurida, Midd. (Genus reconstituted for Muricoid Purpurids with 
irregular varices.) Like canaliculata, brown, with swelling ribs. Beach on 
Cat. Is. living. Cp. 
463b.Ocinebra var. aspera, Baird. Sculpture rough. 
463. Ocinebra var. munda. Tall, with faint sculpture. 
464, Ocinebra interfossa, n.s. Purple-brown, with latticed sculpture. 
465. ? Ocinebra Poulsoni, Nutt. Shape like M. monoceros, with brown spiral lines: 
466. Cerostoma foliatum, Gmel.=monodon, Esch. Large, with winged varices. 
467. Cerostoma Nuttallii, Conr. Smaller, pear-shaped: interstices scarcely sculptured, 
468. Cerostoma monoceros, Sby. Spire raised : whirls rough, rounded. 
469. Chorus Belcheri, Hds. Sulph. Very large, with irregular varices like Trophon. 
L. w. com. Op. 
470. Nitidella Gouldii, Cpr. P. Z. 8, 1856, p. 208, Slender: like thin A. gausapata, 
with Purpuroid operc. 
471. Pedicularia Californica, Newe. Small, purple, highly sculptured. 
Family Muricide. 
472. Pteronotus festivus, Hds. Sulph. Form irregular; frills reflexed. : 
473. Muricidea Californica, Hds. Sulph. Varices faintly developed. L.w.-20fm. Cp. 
474, Trophon multicostatus, Esch.= Giunneri, Loy. Rye. Frills spiny behind: not 
sculptured spirally. Crop 
475. Trophon Orpheus, Gld. E. E. Like the last, with distant spiral riblets. 
476. Trophon triangulatus,n.s. Typhoid shape: frills triangular, white, 60 fm. Cp, 
477. Siphonalia Kellettii, Fbs. P.Z.S. 1850, p. 274. Very large, turrited, with 
swollen whirls. Also Japan. 1 living 63 in. long. 
478. Siphonalia fuscotincta, n.s. Like the same in extreme miniature. 
479, Chrysodomus tabulatus, Baird, P. Z.S. 1863, p. 66. Large, with posterior keel, 
and delicate sculpture. 120 fm. dead, Cat. Is. Cp. 
480, Chrysodomus liratus, Mart, = decemcostatus, Midd. (? Say) = Middendorffix, Coop; 
Swollen, with distant keels. "Whidby’s Is. : 
