ARNOLD — THE PALEONTOLOGY AND STKATIGItAPHY OF SAN PEDRO. 



35 



Alpha uKTic Llst Showing the Disthibution of Species in the Vicinity of San 



Pedro. * 



(E indicates species which are extinct; X indicates species living at San Pedro; S indicates species living only 

 south of San Pedro; N indicates species living only north of Sau Pedro; C indicates species living only at Cataliua 

 Island; B stands for rare; M stands for medium abundant; C stands for common.) 



PELECYPODA. 



AUgena cerritenais, sp. nov 



A miantiK callona Conkad 



A ngulus biUtoni Dall 



A nomia lampe Gka Y 



A rca labiaia Sowerby 



Asiarte {Crassinella) branneri, sp. nov 



Bornia relifera Dall 



Callista subdiaphana Carpenter 



Callista subdiaphana var. pedroana, var. nov. 



Callista neiocombiana Gabb 



Cardium corbis Maetyn 



Cardium elatum Sowerby 



Cardium procerum Sowerby 



Cardium quadrigenarium Conrad 



Chama exoijyra Conrad 



Chama ptliuciila Sowerby 



Clidiophora punctata Conrad 



Cooperella iubdiaphana Carpenter 



Corbula luteola Carpenter 



Cryptomya californica Conrad 



Cumingia californica Conrad 



Diplodonta orbella Gould 



Diplodonta serricata Reeve 



Donax californica Conrad 



Donax htviyala Desha yes 



Glycymeris barbarenms Conrad 



> 

 3 



s C 



E 

 X 

 X 

 X 



s 



E 

 N 

 N 

 E 

 X 

 N 

 S 

 S 

 X 

 X 

 X 

 X 

 X 

 X 

 X 

 X 

 X 



s 



X 

 X 



E 



Pleistocene. 



Upper San Pedro. 



R 

 K 



R 

 R 



M 

 B 



■2 c 



B 

 B 

 C 

 R 



M 



B 

 M 

 B 

 C 

 C 

 R 

 R 

 R 



R 

 C 

 R 

 R 

 C 

 R 

 C 

 C 



at 



OJ 



U 



K 

 C 

 B 



C 



M 



M 

 R 

 C 

 C 

 R 

 R 



M 



C 

 R 



Lower 

 San Pedro. 



2t3 



a o 



B 

 M 



M 



R 

 E 

 R 



M 

 R 



M 

 R 



B 



M 



R 



M 

 R 

 R 

 R 

 M 

 E 

 R 



R 

 R 



•lie 



ft. 3 



55 



R 

 B 



M 



M 

 M 



C 



R 



M 



* This list has been kept open until the time for sending the manuscript to press, and contains a few species which are not given in 

 the general discussion, although the descriptions of all species meDtioned are given iu Part 11 



