ON MOLLUSCA OF THE WEST COAST OF NORTH AMERICA. 
_Glyphis densiclathrata *. 
Lucapina crenulata ' (one spec. Catalina 
Is. ). 
Haliotis rufescens ' +, 
Kamtschatkana | +, 
Pomaulax undosus +. 
Trochiscus Norrisii? (and Catalina Is.). 
Calliostoma canaliculatum'!, annula- 
tum, costatum '. 
Omphalius fuscescens *. 
Chlorostoma funebrale', brunneum !, 
Pfeifferi |. 
Crucibulum spinosum *, 
Shells collected by Major Rich, near La 
(Thracia) Cyathodonta plicata. 
Sanguinolaria miniata. 
Tellina Cumingii. 
Strigilla carnaria. 
Heterodonax bimaculatus. 
Iphigenia altior. 
Donax navicula, punctato-str., rostratus. 
Standella fragilis (common). 
Mulinia angulata. 
Trigona argentina, radiata, planulata. 
Dosinia ponderosa. 
Callista concinna, chionxa. 
Chione succincta, amathusia, gnidia, 
pulicaria, var. 
Anomalocardia subimbricata. 
Tapes grata, histrionica. 
Lazaria Californica. 
Cracherodii ! 4, 
Chama spinosa, producta, corrugata. 
Cardium consors, biangulatum. 
Liocardium elatum. 
Codakia tigerrina (two fine specimens). 
Cyrena olivacea, Mexicana. 
Anodonta glauca. 
Mytilus multiformis. 
Modiola capax. 
Area multicostata. 
Barbatia Reeviana, solida. 
Pectunculus giganteus. 
Pinna rugosa. 
Margaritophora fimbriata. 
Isoonomon Chemnitzianum. 
Pecten ventricosus, subnodosus. 
Lima tetrica *. 
Janira dentata. 
Ostrea amara (Maz. Cat. 215. Is. Cres- 
tona, entrance of Gulf), Virginica 
(more pearly than the Atlantic shells, 
teste Rich). 
Anomia lampe. 
Bulimus sufflatus *, excelsus *, pallidior, 
Physa elata *, aurantia. 
Patella Mexicana. 
Acmza atrata, mesoleuca. 
Fissurella rugosa, virescens. 
Glyphis alta, inzequalis. 
541 
Crepidula rugosa *, adunca?, explanata *. 
Hipponyx Pantiquatus*, ?tumens '. 
Serpulorbis squamigerus ?. 
Spiroglyphus lituella ? *. 
Litorina planaxis }, 
Trivia Californica +. 
Conus Californicus +. 
Ranella Californica +. 
Otivella biplicata !, beetica 1. 
Purpura, vars. ostrina1, emarginata!. 
Cerostoma Nuttallit. : 
Nassa mendica ', perpingius !, fossata', 
Helix, three sp. 
Paz (west shore of the Gulf of Cal.), 
Haliotis splendens (three fresh specimens 
from a resident at San Jose). 
Callopoma fluctuosum. 
Uvanilla olivacea. 
Omphalius rugosus, coronulatus. 
Nerita scabricosta, Bernhardi. 
Neritina picta. 
Crucibulum spinosum, imbricatum, pec- 
tinatum, wmbrella. 
Galerus mamillaris, conicus. 
Crepidula aculeata, onyx, nivea, ungui- 
formis, arenata. 
Hipponyx Grayanus, 
quatus, 
Aletes centiquadrus. 
Spiroglyphus lituella (on Cr. wmbrella). 
Turritella goniostoma, tigrina. 
Cerithium maculosum,stercus muscarum. 
Cerithidea Montagnei. 
Litorina fasciata, conspersa. 
Modulus catenulatus, disculus. 
Cypreea exanthema. 
Aricia arabicula. 
Luponia Sowerbii, albuginosa. 
Trivia sanguinea, radians, Solandri, pus- 
tulata, Pacifica. 
Strombus granulatus, gracilior. 
Euryta fulgurata. 
Pleurotoma funiculata, maculosa. 
Drillia Pinermis. 
Conus puncticulatus, gladiator, purpu- 
rascens, regularis, arcuatus, nux. 
Solarium granulatum, v. quadriceps. 
Cancellaria obesa, cassidiformis, solida, 
goniostoma, Pcandida. 
Natica maroccana, zonaria. 
Polinices Recluziana, bifasciata, otis. 
Neverita patula. 
Sigaretus debilis. 
Oniscia tuberculosa. 
Levenia coarctata. 
Bezoardica abbreviata. 
Priene nodosa. 
Turbinella ceestus. 
Fasciolaria princeps. 
serratus, anti- 
