U. S. DEPARTMENT OF AGRICULTURE, 

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



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



PAPERS ON THE COTTON BOLL WEEVIL AND 

 RELATED AND ASSOCIATED INSECTS. 



HIBERNATION AND DEVELOPMENT OF THE 

 COTTON BOLL WEEVIL 



BY 



E. DWIGHT SANDERSON, 



Formerly State Entomologist of Texas. 



Issued January 15, 1907. 



• 3 4 ns^ 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 



1907. 



