Title, Contents, Indices to Vol. XII. 



BULLETIN OF 



ENTOMOLOGICAL 



RESEARCH 



ISSUED BY THE IMPERIAL 

 BUREAU OF ENTOMOLOGY. 



EDITOR : THE DIRECTOR. 



LONDON : 



THE IMPERIAL BUREAU OF ENTOMOLOGY, 



41, queen's GATE, S.W.7. 



I92I-I922. 



ALL RIGHTS RESERVED. 



