'"^ 



Second Series, No. 249.] SEPTEMBER, 1910. IPeice 1s.net 

 [No. 556.] 



THE 



EKTOMOLOGISTS 

 MOKTHLY MAGAZIBE. 



EDITED BY 



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



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

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



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

 LORD WAL81NGHAM, M.A., LL.D., F.R.S., &c. 



SECOND SERIES-VOL. XXI. 



[ VOL. XLVI. ] 



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

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

 plus courtoise."— Laboulbene. 



LONDON 



v^:.^ 



'iV'A'v 



GURNEY & JACKSON (Me. Van Vooest's Successobs)^... 

 10, PATERNOSTER ROW, E.G. 



SOLD IN GER.MANY BY FRIEDLANDER UND SOHN, BERLIN. 



NAPItR, PK1^TER, SEYilOUR STREET, EUSTON SQUARL, 



