NEOCENE STRATIGRAPHY. 



327 





2 

 



5; 



c 



a 







(tj 



c 



i 



a 



(0 



a 

 



a 



(TO 

 



"-! 



s 



w 

 a 

 Q 

 a 

 ctq 

 



F 





5' 

 



< 



P 



TO 

 



B 



c 

 3 



GASTEROPODA. 



Astyris gausopata Gould 





Calyptraea inornata Gabb ? 





* 











# 



* 





Cancillaria tritonidea Gabb 







Chorus belcheri Hinds 

















Orepidula grandis Middeudorf 











* 



* 



* 



* 





Cryptochiton c. f. stelleri Middendorf 





* 

 * 





* 





Luuatia lewisii Gould 







Nassa californica Conrad 







Nassa perpinguis Hinds 















Natica clausa Broderip and Sowerby ? 



















Neptunea humerosa ? Gabb 















" 



* 





Neptunea tabulata Baird 













* 







Purpura crispata Chemnitz 



* 









,■ • 









Purpura saxicola Valenciennes 





Surcula Carpentaria Gabb 

















* 





Volutilites iudurata Conrad 





» 













LAMELLIBRANCHIATA . 



Acila castrensis Hinds 







Area canalis Conrad ? t 







Area microdonta Conrad 





* 

 * 









- 



« 



* 



* 

 « 



* 



« 



* 



* 

 * 





Area sulcicosta Gabb 



Cardium corbis Martyn 







Cardium nieekianum Gabb 

















Chione simillima Sowerby? 















s. 



Crytomya californica Conrad 

















Cyrena californica Gabb 

















Glvcimeris generosa Gould 













* 





Lucina borealis Linnfeus 



^ 





* 







n. s. 



Macoma edulis Nuttall ? 





Macoma nasuta Conrad 





- 









* 





Meretrix traskii Conrad ? 







Modiola flabellata Gould 













* 



s. 



Mya truncata ?. 





^ 











Pachydesma ineziana Conrad ? 







Pecten caurinum Gould 



* 





a 







* 





Pecten pabloensis Conrad 





Pecten propatuius Conrad 





^ 





Psamnobia rubroradiata Conrad ? 







Sanguinolaria uuttalliaua Conrad? 

















Saxidomus gibbosus Gabb 



Schizothoerus nuttalli Conrad 







* 



* 





» 



* 



* 













