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CALIFORNIA ACADEMY OF SCIENCES. 



Lucina californka Conrad 



Lue.ina nuttalli Conrad 



Lucina Unnisculpla Carpenter 



Macoma imlentata Carpenter 



Macoma inrjuinala Deshayes 



Maeoma nasnta Conrad 



Macoma namila var. keheyl Dall 



Macoma xecla Conrad 



Macoma yoldiformis Carpenter 



Mactra cali/ormra Conrad 



Mactra (Spixula) catilliformin Conrad 



Mactra cxoleta Gray 



Mactra (Spixvia) falrala Godld 



Manii'iUn unijulala Carpenter 



Mantjilia /tlriona C. B. Adams 



Melampus olivareun Carpenter 



Metis alia Conrad 



Modiola recta Conrad 



Monoceron enrjonatum Conrad 



Murcx ( Ptrrohytis) nul.lalli Conrad 



NoHSa californiana Conrad 



Nasaa ccrritennis, sp. nov 



Nassa/onxata Gould 



Nassa mcndirn Gould 



Nassa inrndica var. rooperi FoRBE.s 



NanKa pcrpini/uit: Hinds 



Nassa teyula Reeve 



Neverita recluziana Petit 



Norrinia norrinii Sower by 



Nucula supraxlriata Carpenter 



Ociiiebra interfoxsa Carpenter 



Ocinchra /uridn Middendorf 



Ocinchra pouhoni Nuttall 



Ocini'bra perita Hinds 



Odostomia nuciformis var. avellana Carpenter 



Odoslomia tenuis Carpenter 



Olivella biplicata Sowerby 



OUvella intorta Carpentee 



Pleistocene. 



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