THE 



ENTOMOLOGIST'S 



MONTHLY MAGAZINE: 



EDITED BY 



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



W. W. FOWLER, D.Sc, M.A., F.L.S. 



R. W. LLOYD, F.E.S. O. T. PORRITT, F.L.S. 



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



VOLUME LV. 



[XHIRU SERIES- VOL. V.] 



" J'engage done tous a eviter clans leiu-s ecrits toute persoujialitti, 

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

 plus courtoise." — Lahoulbc ue. 



LONDON : 

 GURNEY & JACKSON (Me. \a^ Voorst's Successors). 

 33, PATERNOSTER ROW, E.C.4. 

 $ 1919. 



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