42 



GALIFOKNIA ACADEMY OF SCIENCES. 



Isapis feneslrnla Carpenter 



Ischnochlton rrgularis Cakpenter 



Ivara terricula (Carpenter) Dali. & Bartsch. 



Lacuna compacla Carpenter 



Lacuna porrecla Carpenter 



Lacuna solidula (Loven) Carpenter 



Lamellaria steanisii Dall 



Lcptolhyra bacula Carpenter 



Leptolhyra carpenter! Pilsbry 



Lcplothyra paucicostata Dall 



a 





X 

 X 



s 



N 

 N 

 X 

 X 

 X 

 X 

 X 



Liltorina planaxh (Nuttall) Philippi j X 



Littorina scutulata Gould X 



Lucapina crenulala Sowerby X 



Macron kelletlii A. Adams S 



Macron lividus A. Adams X 



Mangilia angulata Carpenter N 



Mangilia hoover!, sp. nov E 



Mangilia interfossa var. pedroana, var. nov E 



Mangilia interlirata Stearns ' X 



Mangilia oldroydi, sp. nov E 



Mangilia painei, sp. uov E 



Mangilia sculpturata Dall X 



Mangilia striosa C. B. Adams X 



Margarita obtabilis var. knechti, var. uov E 



Margarita oplahilis var. nodosus, var. nov E 



Margarita parcipicta var. pedroana, var. uov E 



Margarita pupilla Goold N 



Marginella jewettii Carpenter X 



Melampus olivaceus Carpenter X 



Mitra maurn Swainson X 



Milramorphafilosa Carpenter X 



Milramorpha intermedia, sp. nov E 



Monoceros engonalum Conrad X 



Monoceros lapilloides Conrad X 



Mopalia ciliata Sowerby X 



Pleistocene. 



Upper San Pedro. 





K 



K 

 R 



M 



n o 

 u u 



E 



R 



E 

 E 



M 



M 



Lower 

 Sail Pedro. 





R 

 E 

 M 

 R 

 R 

 E 

 E 

 R 

 R 

 M 



E 

 E 

 R 

 E 



C 



R 

 E 



E 

 E 



M 

 M 

 E 



B. 3 



M 



E 

 C 



M 



C 

 E 

 C 



M 

 M 

 M 



E 



•O CO 





E 



