LIBRARY 
STATE PLANT BOARD 
JUK 231-si 
THE INSECT P E S T SURVEY 
BULLETIN 
Volume 21 June 1, 1941 Number 4 
BUREAU OF 
ENTOMOLOGY AND PLANT QUARANTINE 
UNITED STATES 
DEPARTMENT Of AGRICULTURE 
AND 
THE STATE ENTOMOLOGICAL 
AGENCIES COOPERATING 
