THE INSECT PEST SURVEY 
BULLETIN 
A periodical review of entomological conditions throughout the United State* 
issued on the first of each month from March to December, inclusive. 
Volume 11 June 1, 1931. Number 4 
BUREAU OF ENTOMOLOGY 
UNITED STATES 
DEPARTMENT OF AGRICULTURE 
AND 
THE STATE ENTOMOLOGICAL 
AGENCIES COOPERATING 
