42 



CALIFOKNIA ACADEMY OF SCIENCES. 



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> 





fsapis feneslrala Carpenter X 



I schnochilon regidaris Carpenter X 



/ward <erric«te (Carpenter) Dall & Bartsch i S 



Lacuna compacta Carpenter | N 



Lacuna porrecta Carpenter 



Lacuna solidula (Loven) Carpenter. 



fjamellaria slearnsU Dall 



Lrplothyra bacula Carpenter 



Lfptothyra carpenleri Pil.sbry 



Leplothyra paucicostata Dall 



N 

 X 

 X 

 X 

 X 

 X 

 Littorina planaxis (Nuttall) Philippi ! x 



Littorina scutulata Goold 



Lucapina crenutata Sowerby 



Macron kellettii A. Adams 



Macron liv'idus A. Ada.ms 



Mangilia anyulata Carpenter 



Mangilin hooveri, sp. nov 



Mangilia interfossa var. pedroana, var. nov . . . 



Mangilia interliraia Stearns 



Mangilin oldroydi, sp. nov 



Mangilia painei, sp. nov 



Mangilia sculpturata Dali 



Mangilia Klriona C. B. Adams 



Margarita obtabilin var. kncchti, var. uov 



Margarita oplabilis var. nodonus, var. nov. . . . 

 Margarita parcipicta ^ar. pedroana, var. uov. 



Margarita pupilta GODLD 



Marginella jewetlii Carpenter 



Mi'iampux olivaceus Carpenter 



Milra maura Swainson 



Mitramorpha filosa Carpenter 



Milramorphn intermedia, sp. nov 



Monoceros engonutum Conrad 



MonoceroH lapilloidea Conrad 



Mopalia ciliata Sowerby 



X 



X 



S 



X 



N 



E 



E 



X 



£ 



E 



X 



X 



E 



E 



E 



N 



X 



X 



X 



X 



E 



X 



X 



X 



Pleistocene. 



Upper San Pedro. 



as 



R 



E 



R 

 R 

 E 



M 



.0*0 



5^ 



M 

 E 



M 

 C 

 R 



E 

 M 



R 

 R 



R 

 R 



M 



R 

 C 

 R 



C 

 R 

 R 



R 

 R 



R 

 R 



R 



Lower 

 San Pedro. 



CD O 



R 



R 



E 

 R 

 M 



M 



•O CO 



E 



E 

 E 



M 

 E 

 E 

 E 

 R 

 R 

 R 

 M 



R 

 R 

 R 



R 



C 



R 

 R 



E 

 E 



M 

 M 

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"O.tn 



ft, 3 



25 



M 



E 



E 

 C 



M 



C 

 E 



C 



M 

 M 

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8^ 



S o 



E 



