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



VOL VII. Ser. B. Part 9.~pp. 137-152. SEPTEMBER, 1919. 



THE REVIEW 



OF APPLIED ^.,o,,n 



E N T O M O LO G!Yi]CT2 4 199 ^ 



SERIES b: medical 



AND VETERINARY. 



ISSUED BY THE IMPERIAL 

 BUREAU OF ENTOMOLOGY 



LONDON : 



BOLD BT 



THE IMPERIAL BUREAU OF ENTOMOLOGY, 

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



Price 6d. net. 



All Rig'hts Reserved. 



