

U. S. DEPARTMENT OF AGRICULTURE. 



BUREAU OF ENTOMOLOGY— BULLETIN No. 100. 



L. O. HOWARD. EntomolosUt and Chief of Bureau. 



THE INSECT ENEMIES OF THE 

 COTTON BOLL WEEVIL. 



PY 



W. DWIGHT PIERCE, 



Agent and Expert, 



ASSISTED BY 



R. A. CUSmiAN AND C. E. HOOD, 



Agents and Experts, 



UND^R THE DIRECTION OF 



W. D. HUNTER, 



Agent and Expert, 

 In Charge of Southern Field Crop Insect Investigations. 



IssuEJj Apkil ;'., 1912. 



WASHINGTON: 

 GOVERNMENT PRINnNG OFFICE. 



