PROCEEDINGS 



OF THE 



CALIFORNIA ACADEMY OF SCIENCES 



Fourth Series 



Vol. IX, No. 6, pp. 197-220, pis. 11-13 August 21, 1919 



VI 



The Gopher-Snakes of Western North America 



BY 



John Van Denburgh 



Curator, Department of Herpetology 



AND 



Joseph R. Slevin 

 Assistant Curator, Department of Herpetology 



PRINTED FROM THE 

 JOHN W. HENDRIE PUBLICATION ENDOWMENT 



SAN FRANCISCO \4;^ 



Published by the Academy n^ ■c'/,- , 



1919 



