



PROCEEDINGS 

 , Fourth Series 



VOLUME IX 



Pages 1-36. I. Notes on West American Chitons — II. ByS. Still- 

 man Berry. Plates 1-8. {Issued June 16, 1919) .35 



Pages 2)7-67. II. Life-Zone Indicators in California. By Harvey 



Monroe Hall and Joseph Grinnell. {Issued June 16, 1919) 25 



Pages 69-121. III. Notes on Mammals collected principally in 

 Washington and California between the Years 1853 and 1874 by 

 Dr. James Graham Cooper. By Walter P. Taylor. {Issued 

 July 12, 1919) 25 



Pages 123-173. IV. Climatic Relations of the Tertiary and Quater- 

 nary Faunas of the California Region. By James Perrin Smith. 

 Plate 9. {Issued July 12,1919) 50 



Pages 175-1%. V. Contribution to the Optics of the Microscope. 

 By C. W. Woodworth. Plate 10, 6 text figures. {Issued 

 July 12, 1919) 25 



Pages 197-220. VI. The Gopher-Snakes of Western North America. 

 By John Van Denburgh and Joseph R. Slevin. Plates 11-13. 

 {Issued August 21, 1919) 30 



Pages 221-255. VII. New Oregon Diptera. By F. R. Cole and 



A. L. Lovett. Plates 14-19. {Issued August 26, 1919) 40 



Pages 257-270. VIII. Key to the North American Species of the 

 Dipterous Genus Medeterus, with Descriptions of New Species. 

 By Millard C. Van Duzee. ( Issued August 26, 1919 ) 30 



Pages 271-272. IX. Description of a New Fossil Fish from Japan. 



By David Starr Jordan. Plate 20. {Issued October 22, 1919) ... .15 



Pages 273-2%. X. Notes on the Avifauna of the Inner Coast 

 Range of California. By Joseph Mailliard. {Issued November 

 25, 1919) 40 



Pages 297-312. XI. New Species of Flies (Diptera) from Cali- 

 fornia. By J. R. Malloch. {Issued December 23, 1919) 40 



Pages 313-329. XII. Mechanism in the Production of the Throat- 

 Fan in the Florida Chameleon, Anolis carolinensis. By Chas. 

 E. von Geldern. ( Issued December 23, 1919 ) .40 



Pages 331-356. XIII. New Hemipterous Insects of the Genera 

 Aradus, Phytocoris and Camptobrochys. By Edward P. Van 

 Duzee. {Issued February 5. 1920) .45 



Pages 357-396. XIV. Report of the President of the Academy for 

 the Year 1919. 



XV. Report of the Director of the Museum for 



the Year 1919. {Issued August 4, 1920) .40 



The Academy cannot supply any of its publications issued before the 

 year 1907, its entire reserve stock having been destroyed in the conflagra- 

 tion of April, 1906. 



THE HICKS-JUDD PRESS 

 SAN FRANCISCO 



