CONTENTS OF VOLUME . VII. 

 Plates 1-38. 



PAGE 



i 



Title-page 



Contents "^ 



Archffiological Notes on Western Washington and Adjacent British Co- 

 lumbia 



By Albert B. Reagan. 

 (Published July 18. 1917) 



Concerning the Origin of the Soft-shelled Turtle, Aspidonectes califomi- 



ana Rivers ^^ 



By John Van Denburgh. 

 (Published July 23. 1917) 



Notes on the Herpetology of Guam, Mariana Islands 37 



By John Van Denburgh. 

 (PubUshed July 23, 1917) 



Stratigraphic and Faunal Relations of the Martinez to the Chico and 



Teion of Southern California 41 



By Clarence A. Waring. 

 (Published July 30, 1917) 



The Fauna of a Medial Tertiary Formation and the Associated Horizons 



of Northeastern Mexico • • W4xrVr ^^^ 



By Roy E. Dickerson and Wilham S. W. Kew. 

 (Published July 30, 1917) 



Climate and its Influence upon the Oligocene Faunas of the Pacific Coast, 

 with Descriptions of some new Species from the Molopophorus Im- 



colnensis Zone '■^' 



By Roy E. Dickerson. 



(Published July 30, 1917) 



Climatic Zones of Martinez Eocene Time 193 



By Roy E. Dickerson. 



(Published July 30, 1917) 



Ancient Panama Canals 197 



By Roy E. Dickerson, 



(Published July 30, 1917) 



Geology of a Portion of the McKittrick District, a typical Example of the 

 West Side San Joaqmn Valley Oil Fields, and a Correlation of the 



Oil Sands of the West Side Fields 207 



By G. C. Gester. 



(Published July 31, 1917) 



Notes on West American Chitons — 1 229 



By S. Stillman Berry. 

 (Published September 1, 1917) 



Report upon a Collection of Hemiptera made by Walter M. Giffard in 



1916 and 1917, chiefly in California 249 



By Edward P. Van Duzee. 

 (Published December 31. 1917) 



Report of the President of the Academy for the Year 1917 319 



By C. E. Grunsky. 



(Published June 15, 1918) 



Report of the Director of the Museum for the Year 1917 331 



By Barton Warren Evermann. 



(Published June 15. 1918) 



Index ^65 



Nov. 29, 1918 



