UNITED STATES 

 DEPARTMENT OF THE INTERIOR 



FISH AND WILDLIFE SERVICE 

 BUREAU OF SPORT FISHERIES AND WILDLIFE 



North American Fauna, Number 69 

 Published by 

 Bureau of Sport Fisheries and Wildlife 

 February 1971 



U.S. GOVERNMENT PRINTING OFFICE 

 WASHINGTON : 1971 



For sale by the Superintendent of Documents, U.S. Government Printing Office 

 Washington, D.C. 20402 - Price 50 cents 



