

FIRST SERIES NO. 43 



FEBRUARY 15, 1921 



UNIVERSITY OF IOWA 

 STUDIES 





STUDIES IN NATURAL 

 HISTORY 



VOLUME IX 



NUMBER 



QL 

 561 



H5L75 



1921 



ENT 



¥ 



THE HESPERIOIDEA OF 



AMERICA NORTH 



OF MEXICO 



by 

 ARTHUR WARD LINDSEY 



PUBLISHED BY THE UNIVERSITY, IOWA CITY 



Issued monthly throughout the year. Entered at the post offire at Iowa City, Iowa. 



as second class matter. Acceptance for mailing at special rates of postage provided 



for in section 1103, Act of October 3, 1917. authorized on July 3, 1918. 



