iM 



VOL. V. Ser. B. Part 7.— pp. 89-104. JULY, 1917. 



THE REVIEW 

 OF APPLIED 

 ENTOMOLOGY, 



SERIES b: medical 



AND VETERINARY. 



ISSUED BY THE IMPERIAL 

 BUREAU OP ENTOMOLOGY. 



-<■', 



\ /< 



^ 



LONDON: 



SOLD BT 



THE IMPERIAL BUREAU OF ENTOMOLOGY, 

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



Price 6cl. net. 



All Rights Reserved. 



