ARNOLD] FOSSIL MOLLUSKS FROM CALIFORNIA 425 



Gakrus mammilaris Broderip. 



Glottidia albida Hinds. 



Lacuna compacta Carpenter. 



Laqneus jeffrcysi (?) Dall. 



Leptothyra bacula Carpenter. 



Leptothyra paucicostata Dall. 



Macoma, species. 



Mangilia angulata Carpenter. 



Mangilia interfossa, var. pedroana Arnold. 



Mangilia tabulata Carpenter. 



Margarita papilla Gonld. 



Mercenaria perlaniinosa Conrad. 



Modiolus fornicatus Carpenter. 



Xassa mendica Gould. 



Nassa perpinguis Hinds. 



Natica clausa Broderlip and Sowerby. 



Ocinebra barbarensis Gabb. 



Ocinebra lurida Middendorf. 



Ocinebra lurida, var. aspcra Baird. 



Ocinebra pcrita Hinds. 



Odostomia nuciformis, var. avellana Carpenter. 



Odostomia gouldii Carpenter. 



Olivella biplicata Sowerby. 



Panopea gencrosa Gould. 



Pecten (Pectcn) bcllus Conrad. 



Pectcn (Patiuopecten) caurinus Gould. 



Pecten (Chlainys) hastatus Sowerby. 



Pecten (Chlamys) hastatus Sowerby, var. strategus Dall. 



Pecten (Chlamys) jordani Arnold. 



Pecten (Chlamys) opuntia Dall. 



Phacoides annulatus Reeve. 



Phacoides calif ornica Conrad. 



Pododcsiuus macroschisma Deshayes. 



Protocardia ccntifilosa Larpenter. 



Puncturclla cuculata Gould. 



Sonde pulchra Sowerby, var. uiontereyi Arnold. 



Strongylocentrotus purpuratus Stimson. 



Terebratalia hcniphilli Dall. 



Tomatina culcitella Gould. 



Trophon (Boreotrophon) gracilis Perry. 



Trophon (Boreotrophon) orphcus, var. precursor Arnold. 



Trophon (Boreotrophon) stuarti Smith. 



Turbonilla tridentata Carpenter. 



Vencricardia nwnilicosta Gabb. 



