ON MOLLrsCA 01? THE WEST COAST OF NORTH AMERICA. 



665 



•Sanguinolaria Nuttalli. 

 "Macoma secta. 



Angulus Gouldii. 

 *tHeterodonax bimaculatus. 

 *Donax Californicus. 

 tDonax punctatostriatus. 

 *StaiideUa PCalifomica. 

 *Pachydesma crassatelloideSi 

 *tAmiaiitis callosa. 

 *Chioiie aimillima. 

 tChione neglecta. 

 *Tapes staminea, Conr. 

 tTapes grata and vais. 

 *Luoina Califomica. 

 Lucina bella. 

 *Mytilus edulis. (One young specimen, 



perhaps fi'om San Francisco.) 

 *Septifer bifiircatus. 

 tPecteu suljnodosus, Tentricosus. 

 *Pecten monotimeris and Tars. 

 *Hinnites giganteus. 

 •fOstrea eoncliapliila. 

 •fAnomia Plampe. 



Siplionaria sequilirata. 

 *tMelampus olivaceus. 



Helix aiTosa. 

 •fBuUa netulosa. 

 •flschnochiton Magdalensis. 

 •Acmsea persona, var. textilis. 

 *AcmKa scabra, var. limatula. 

 *Acm8ea Pspectrum, jun. 

 *Lottia gigantea. 

 *Lucapina crennlata. 

 *Fissurella volcano. 

 *Haliotis splendens. 

 •Haliotis Craclierodii. 

 •Pomaulax I'iidosus. 



*Trochiscus Norrisii. 

 •Omphalius Pfuscescens. 

 *Omplialius aureotinctus. 

 tCrucitulum imbricktum. 

 *tCnicibulum spinosum. 

 tCrepidula arenata and var. 

 tCenthium uncinatum. 

 *Ceritliidea puUata. 

 tCerithidea Montagnei. 

 *Litorina planaxis. 



Luponia sp. ind., jun. 

 tTrivia Solaudri. 

 *TriTia Californica. 



Drillia penieillata. 



Myurella, sp. 

 *tNeventa Recluziana. 

 tNatica Maroccana. 

 *Scalaria (Ind. var.) tincta. 

 tBezoardica abbreviata. 

 tLeucozonia cingulata. 

 tStrigatella tristis. 

 *01 vella biplicata. 

 *Pui-puTa ostrina, vara. 

 tPurpura biseiialis. 



Monooeros lugubre. 

 tVitiilaria salebrosa. 



Cerostoma monoceros. 



Ocinebra Poulsoni. 



Chorus Belcheri. 

 tColumbella fuscata. 

 'Cohimbella carinata. 

 tStrombina gibberula. 

 tAnachis coronata. 

 *tNassa tegula. 

 tNassa complanata. 



Macron Kellettii. 

 *Macron lividus. 



Oallopoma teasellatum=rokkesii. 



The shells of Margarita Bay, on the Pacific coast of Lower California, in 

 lat. 24°, have become known through W. Harper Pease, Esq., of Honolulu, 

 Sandwich Islands. Through his labours we are likely soon to be favoured 

 with accurate accounts of the distribution of species in the various parts of 

 the Pacific Ocean. Already his researches have greatly enriched our know- 

 ledge of the quaint fauna of the Sandwich Islands, from which he has elimi- 

 nated the spurious species, and added those erroneously ascribed to California 

 by previous naturalists. The principal trade from these islands is with San 

 Francisco ; and " the coast," in Mr. Pease's writings, signifies the coast of 

 California or (generally) of Western America. Many of our best specimens 

 of rare West-coast shells have been received from him, and in remarkably 

 fresh preservation. The Margarita Bay species were obtained by one of his 

 trained collectors, and are as follows : — 



Mai'tesia intercalata. 

 Saxicava pholadia 

 Solecurtus violascens. 

 Hiatula compacta. 

 •Tellina aeeta. 

 Strigilla caraaria (pink), 

 Semele Califomica, 



151 



Donax punctato-striatus. 



Dosinia ponderosa. 



Callista chionsea. 



Callista vulnerata (?=tricolor, P»e.). 



Chione succincta 



Chione gnidia. 



Tapes grata. 



