142 CALIFORNIA ACADEMY OF SCIENCES [Pboc. 4th Ser. 



Interregional Correlation Table of Pliocene Faunas 



The Messenian has 83% extinct and the fauna is larg-ely 

 tropical. The Plaisancian still has Indian Ocean species, and 

 many remnants of the tropical fauna, like the Fernando. The 

 Astian is more temperate, and the Coralline Crag, like the 

 Purisima, begins to show influx of northern types. In the 

 Sicilian, and Norfolk Crag, the boreal types have completely 

 replaced the southern. 



Pliocene Faunas of the West Coast. 



Olympic Peninsula (coast of Washington, lat. 48° N.). 

 Collections made by R. Arnold, A. B. Reagan, and H. Hanni- 

 bal, have yielded : Cardium meekaniim Gabb, Chione securis 

 Shum, Macoma calcarea Gmel., Marcia oregonensis Con., 

 Panopea generosa Gld., P eaten caurinus Gld., Phacoides annu- 

 latus Rv., Spisula voyi Gabb, Thyasira bisecta Con., Argobuc- 

 cinum oregonense Redf., Astrcea inequalis Martyn, Chryso- 

 domus imperialis Dall, Chrysodomus tabulatus Baird, Gyri- 

 neum marshalli Reagan, Natica clausa B. & S., Purpura foliata 

 Martyn, Turris perversa Gabb. 



