U. S. DEPARTMENT OF AGRICULTURE 

 BUREAU OF BIOLOGICAL SURVEY 



HENRY W. HENSHAW, Chief 



NORTH AMERICAN FAUNA 



No. 88 



[Actual date of publication, September 30, 1915] 



A REVIEW OF THE AMERICAN MQLES 



BY 



HARTLEY H. T. JACKSON 



ASSISTANT BIOLOGIST, BIOLOGICAL SURVEY 



WASHINGTON 

 GOVERNMENT PRINTING OrPIOE 

 1915 



