ON MOLLUSCA OF THE WEST COAST OV XORTII A:\IERICA. 667 



Chime pnlicaria, Sbv., var.,= V. Pinacatcnsis, Sloat MS. Sculptiu-e pretstd 



saiooth in the middle. 

 Cardiiim elatiim. Fine. 

 Cardium proceruiii. Fine. 



3Iodiila capax. *' Choros." Also Sta. Inez Bay. 

 Modiola Brasiliensis. (Typical.) 

 £i/isoarca Pacifca. 



Ostrea condiapldla et amara, Maz. Cat. 215. 

 Chiton {Lophynis) t'Stokesii. Also San Salvador, Capt. Doio, 

 CallopoDiaJluchadtfin. 

 Bivonia coidorta. 

 Titrritclla (joniostoma. 



TurriteUa tit/rina (light \ai:),= lei(costoma, Val. 



Cerithidea alhonodosa. Common. [Probably a var, ot Mazathntica.'] 

 Stroiiibus gracilior. Also Mulege Bay. 

 Keverita Pechiziana. [Operc. strong, horny.] 

 Itam'Ua friqiiefra. [Operc. sub-Buccinoid, oval ; nucleus internal, near middle 



01^ labrum ; scar with few ridges, as in Purpura.~\ 

 Oliva anpxdata. Not rare. 

 Oliva Cumingii, very callous var. 

 Af/aronia testacea. 

 Moiioceros lugubre. Very tall var. 

 PhyUonotiis nigritus. Very large, of form described by Philippi, with Pholads 



in situ. Agiobampo Bay. 

 PliyUonotus hicolor. [Operc. thin, without frills or raised layers ; of uniform 



colour.] Also Angeles Bay. 



To these may be added, fron> a second voyage by Capt. Stone to the 

 northern part of the Gulf of California, and in equally good condition — 



Area grandis. Agiobampo Bay. 



Callista semilamellosa. Agiobampo Bay. 



Lazaria pectuneidiis (teste Cuming). St. Luis Bay. 



Cardium consors. St. Luis Bay. 



Avicula Peruviana. Mulege Bay. 



Xi'icina tigerrina. Very tine. San Marcos Island. 



Margaritiphorajimhriata. " Topo." 



Janira dentata \_ = e.rcavata, Val.]. " Caballito del mar," St. Luis Bay. 



Hulla nehulosa. " Huevitos."' 



Glyphis incequatis. St. Luis Bay. 



Crucibulum imhricatmn. St. Luis Bay. 



Cypraa exanthema. (Large.) Cape de Haro. 



Myurella variegata. Mulege Bay. 



Solarium granulatum et var. quadriceps. Agiobampo Bay. 



Polinices bifasciata. Angeles Bay. 



Cyprcecassis tenuis [= Marsence, Kien.]. Carmen Island. 



Harpa crenata. Very fine. Mulege Bay. 



Bezoardica abbreviata. Mulege Bay. 



Ficula decussata. Angeles Bay. 



Pyrula patula. Agiobampo Bay, 



Malea ringens. Lobos Island. 



Argonauta hians. 1 tine sp. Upper part of Gulf of California. 



To the Guaymas fauna must be added, from Dr. Gould's portion of the 

 same collection, " Pert en pi/xidatus" [?=subcrenatus, jun.). Also from the 

 collection of the Calif. Ac. Nat. Sc, Nassa nodoclmta, A. Ad. [Galapagos, 

 Cuminr/']. On comparing these lists with the shells given in B. A. Hep. 

 p. 352 (in which the Ventis quoted is not " staminea, Conr.," but a southern 

 species), it will be seen that the fauna of the upper part of the Gulf, as f:ir 

 north as it has been explored, is essentially tropical. Tlie Chione Jiiutifniy c 



153 



