LIBRARY 
•STATE PLANTi BOARD 
t 
THE INSECT PEST SURVEY 
BULLETIN 
Volume 20 Supplement to No. 9 December 10, 1940 
BUREAU OF 
ENTOMOLOGY AND PLANT QUARANTINE 
UNITED STATES 
DEPARTMENT OF AGRICULTURE 
AND 
THE STATE ENTOMOLOGICAL 
AGENCIES COOPERATING 
