U. S. DEPARTMENT OF AGRICULTURE, 



BUREAU OF ENTOMOLOGY— BULLETIN NO. 63, Part II. 



L. O. HOWARD, Entomologist and Chief of Bureau. 



PAPERS ON THE COTTON BOLL WEEVIL AND 

 RELATED AND ASSOCIATED INSECTS. 



ISrOTES 



ON THE 



BIOLOGY OF CERTAIN WEEVILS RELATED 

 TO THE COTTON BOLL WEEVIL. 



BY 



W. DWIGHT PIERCE, 



Special Field Agent. 



Issued February 5, 1907. 



/ 



aSAI^'^ 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE, 



190Y. 



