

^1 



THE REVIEW 

 OF APPLIED 

 ENTOMOLOGY. 



SERIES A: AGRICULTURAL. 



VOL. IX. 



/ 



ISSUED BY THE IMPERIAL 

 BUREAU OF ENTOMOLOGY. 



LONDON: 



THE IMPERIAL BUREAU OF ENTOMOLOGY, 



41, QUEEN'S GATE, LONDON, S.W.7. 



1921. 



All Rights Reserved. 



