^ 



The Annual Subscription for 1922 is 15/- 



™'\No"6al''!' ^''^ DECEMBER, 1921 [P„,aE 2/- nk' 



THE 



EBTOMOLOGIS 

 MOKTliLY MAGAZINE. 



EDITED BT 



G. C. CHAMPION, r.Z.S. J. E. COLLIN, F.E.S. 



■ W. W. ]^^0\VLEli, D.Sc, M.A., F.L.S. 

 E. W. LLOYD, E.E.S. G. T. POKKITT, F.L.S. 

 J. J. WALKER, M A., E.N., F.L.S. 



VOLUME LVII. 



LTHIRD SERIES- VOL. VII.] 



"J'engage done tous a eviter dans leurs ecrits toute personnalite, 

 toute allusion depassant les limites de la diaoussion la plus sincere et la 

 plus courtoise." — Lahoulbene. 



' f 



LONDON: 



GURNEY & JACKSON (Mr. Van Voorst's Successors), 



33, PATEENOSTEK EOW, E.C. 4. 



TAYLOK AND TRANCIS, RED LION COURT, FLEET STREET. 



