U. S. DEPARTMENT OF AGRICULTURE, 



BUREAU OF ENTOMOLOGY— BULLETIN No. 100. 



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



THE INSECT ENEMIES OF THE 

 COTTON BOLL WEEVIL 



BY 



W. DWIGHT PIERCE, 



Agent and Expert, 



ASSISTED BY 



R. A. CUSHMAN and C. E. HOOD, 



Agents and Experts, 



UNDER THE DIRECTION OF 



W. D. HUNTER, 



Agent and Expert, 

 In Charge of Southern Field Crop Insect Investigations. 



Issued April 3, 1912. 



WASHINGTON: 



GOVERNMENT PRINTING OEPIOE. 



1912. 



