Registered at the G.P.O. for Transmission to Canada and Newfoundland by Umgmtine Post. 



VOL. VII. Ser. B. Part 4.— pp. 53-68. APRIL, 1919. 



THE REVIEW 

 OF APPLIED 

 ENTOMOLOGY. 



SERIES b: medical 



AND VETERINARY. 



ISSUED BY THE IMPERIAL 

 BUREAU OF ENTOMOLOGY 



LONDON 



BOU> BT 



THE IMPERIAL BUREAU OF ENTOMOLOGY, 

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



Price 6cl. net. 



All Rigrhts Reserved. 



