U. S. DEPARTMENT OF AGRICULTURE 

 BUREAU OF BIOLOGICAL SURVEY 



HENRY W. HENSHAW, Chief 



NORTH AMERICAN FAUNA 



No. 40 



[Actual date of publication, June 20, 1916] 



A SYSTEMATIC ACCOUNT OF THE 

 PRAIRIE-DOGS 



N. HOLLISTER 



ASSISTANT CURATOR OF MAMMALS, UNITED STATES 

 NATIONAL MUSEUM 



WASHINGTON 

 GOVERNMENT PRINTING OEFIOE 

 1916 



