J) 



The Annual Subscription for 1921 is 15/-. 



Third Series. No. 75.1 at\t>/^tt ,«oi tt, 



r^n fift91 MAECH, 1921. [Phice 2/- 



[No. 682.] 



NET. i 



THE 



ENTOMOLOGJ;&T'S 

 MOSTHLY MAGAZISE. 



EDITED BT 



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. G. T. PORRITT, F.L.S. 



J. J. WALKER, MA., R.N., F.L.S. 



VOLUME LVII. 



LTHIRD SERIES -VOL. VI 



"J'eugage done tous a evitei- daus leurs ecrits toute personxiaiite, 

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

 plus courtoise." —hahoyklhe'iie . 



(Is^l^'-^' 



LONDON : 



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



33, PATERNOSTER ROW, E.G. 4. 



TAYLOR AND rBANCIS, RED LION COURT, FLEET STREET. 



