Registered at the Q.P.O. for Transmlaalon to Canada and Newfoundland by Magazine Post. 



VOL. VIII. Ser. A. Part 6,— pp. 217-258. JUNE, 1920. 



THE REVIEW 

 OF APPLIED 

 ENTOMOLOGY 



SERIES a: agricultural. 



ISSUED B7 THE IMPERIAL 

 BUREAU OF BNTOMOLOQT. 



LONDON t 



THE IMPERIAL BUREAU OF ENTOMOLOGY, 

 88, QUEEN'S GATE, S.W, 7. 



Prieo Is. 4d. net. 



Ail Rights Reserved, 



