THE INSECT PEST SURVEY 
BULLETIN 
Volume 18 
Supplement to No. 7 
September 20, 1938 
BUREAU OF 
ENTOMOLOGY AND PLANT QUARANTINE 
UNITED STATES 
DEPARTMENT OF AGRICULTURE 
AND 
THE STATE ENTOMOLOGICAL 
AGENCIES COOPERATING 
STATE 
HESSV* 
PLAKT 
