U. S. DEPARTMENT OF AGRICULTURE, 



BUREAU OF ENTOMOLOGY—BULLETIN No. 57. 



L. O. HOWARD, Entomologist 



REPORT 



PREPARED UNDER THE DIRECTION OF THE ENTOMOLOGIST 

 BY 



E. DWIGHT SANDERSON, 



Sj)ccial Agent, Biirean of Eutomohgy, in Cooperation with the Entomological Department, 

 Agrimllitral and Mechanical College of Texas. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE, 



19 6. 



