ON MOLLUSCA OF THE WEST COAST OF NORTH AMERICA. 



429. 

 430. 



431. 

 432. 



433. 

 434. 



435. 

 436. 



438. 



439. 

 440. 



441. 

 4*2. 



443. 

 444. 



Family Velutinidce. 



Velutina lavigata. Linn. Fbs. & Hani. Exactly accords with British speci- 

 mens. ? = Kamtschatkana, Desh. 

 Velutina prolongata, n. s. Spire very small. Labrum produced in front. 



Family Naticida. 



Natica clausa, Brod. & Sby. Umbilicus closed. Operc. shelly. Circumboreal. 



Lunatia Lewisii, Gld. E. E. = hercul&a, Midd. Whirls flattened behind. Abun- 

 dant on beach, Cp. 



Lunatia pallida, Br. & Sby. = caurina+soluta, Gld. Globular, compact, whitish. 

 Boreal. 



Neverita Recluziana, Petit, Eve. Large, solid, raised, with brown grooved 

 lump on pillar. Also Guaymas. 



Family Tritonidce. 



Priene Oregonensis, Redf. Like cancellata, but coarser sculpture. 6fm. Lyall. 

 Ranella Californica, Hds. Sulph. Scarcely differs from fine specimens of R. 

 ventricosa, in Mus. Cum. 



Family Fasciolarida. 



Mitra maura, Swains. Nutt. = orientalis, Gray=' Chilensis, Gray,' Kien. Very 

 dark and plain. Peru. Sand between rocks, 1. w. Cum. Peru. 



Family Marginellidce. 

 Marginella Jewettii, Cpr. P. Z. S. 1856, p. 207. Like the Mogador species, 



somewhat shorter and broader. 10-20 fm. Cp. 

 Marginella subtrigona, n. s. Shape of Erato cohtmbella. 

 Marginella regidaris, n. s. Between Jewettii and minor, C. B. Ad. Maz. Cat. 



no. 587. Beach-20 fm. Cp. 

 Volutella pyriformis, n. s. Genus of Swainson (not D'Orb.) = Closia } Gray. 



Like V. margaritula, Maz. Cat. no. 589, but produced in front. 

 Volvarina varia, Sby. C. S. Lucas, W. Indies. 



Family Olivida. 



O'ivella biplicata, Sby. Tank. ~ylandinaria, Nutt. Nut-shaped. 

 Olivella bcetica, n. s. Narrow, dull, thin : has been erroneously called anazara, 

 teryina, petiolita ) and rujifasciata. 



147 



