﻿( 
  viii 
  ) 
  

  

  PAGE 
  

  

  XVI. 
  Notes 
  on 
  the 
  Orthopterous 
  family 
  Mecopodidce. 
  By 
  William 
  

   F. 
  KiRBY,F.L.S., 
  Assistant 
  in 
  the 
  Zoological 
  Department, 
  

   British 
  Museum. 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  405 
  

  

  XVII. 
  Note 
  on 
  Siphonophora 
  artocarpi, 
  Westw. 
  (Trans. 
  Ent. 
  Soc. 
  

   Lond., 
  1890, 
  p. 
  G49). 
  By 
  Prof. 
  John 
  0. 
  Westwood, 
  M.A., 
  

  

  F.L.S., 
  &c 
  413 
  

  

  XVIII. 
  On 
  the 
  South 
  American 
  species 
  of 
  Diahrotica. 
  Part 
  II. 
  

  

  By 
  Charles 
  J. 
  Gahan, 
  M.A., 
  F.E.S 
  415 
  

  

  XIX. 
  New 
  species 
  of 
  Heteroeera 
  from 
  the 
  Ivhasia 
  Hills. 
  Part 
  I. 
  

  

  By 
  Colonel 
  Charles 
  Swinhoe, 
  F.L.S., 
  F.Z.S., 
  &c. 
  . 
  . 
  473 
  

   XX. 
  On 
  some 
  cases 
  of 
  Dimorphism 
  and 
  Polymorphism 
  among 
  

   Palsearctic 
  Lepidoptera. 
  By 
  Serge 
  Alpheraky, 
  of 
  St. 
  

   Petersburg. 
  Communicated 
  by 
  Henry 
  J. 
  Elwes, 
  F.L.S., 
  

   F.Z.S., 
  &c 
  497 
  

  

  XXI. 
  The 
  Effect 
  of 
  change 
  of 
  Climate 
  upon 
  the 
  Emergence 
  of 
  

   certam 
  species 
  of 
  Lepidoptera. 
  By 
  Gervase 
  F. 
  Mathew, 
  

  

  R.N., 
  F.L.S., 
  F.Z.S., 
  &c 
  503 
  

  

  XXII. 
  Descriptions 
  of 
  new 
  species 
  of 
  holophthalmous 
  Ascala- 
  

   pliidce. 
  By 
  Robert 
  McLachlan, 
  F.K.S,, 
  &e., 
  Treasurer 
  

   Ent. 
  Soc. 
  Lond. 
  . 
  . 
  . 
  . 
  509 
  

  

  XXIII. 
  Descriptions 
  of 
  four 
  new 
  species 
  of 
  the 
  genus 
  Fulgora. 
  By 
  

  

  William 
  L. 
  Distant, 
  F.E.S. 
  .. 
  517 
  

  

  XXIV. 
  On 
  the 
  South 
  American 
  species 
  of 
  Diahrotica. 
  An 
  Ap- 
  

  

  pendix 
  to 
  Parts 
  I. 
  and 
  II. 
  By 
  Charles 
  J. 
  G.iHAN, 
  M.A., 
  

   F.E.S. 
  , 
  Assistant 
  in 
  the 
  Zoological 
  Department, 
  British 
  

   Museum, 
  . 
  , 
  . 
  . 
  521 
  

  

  Proceedings 
  for 
  1891 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  i 
  

  

  President's 
  Address 
  , 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  , 
  . 
  . 
  . 
  sliv 
  

  

  Index 
  .. 
  .. 
  .. 
  .. 
  .. 
  .. 
  ., 
  .. 
  .. 
  liij 
  

  

  Plate 
  

  

  EXPLANATION 
  OF 
  THE 
  PLATES. 
  

  

  

  I, 
  See 
  pages 
  1 
  — 
  6 
  

  

  Plates 
  XIII. 
  & 
  XIV. 
  

  

  

  II. 
  „ 
  7—61 
  

  

  See 
  pages 
  

  

  223—278 
  

  

  IIL, 
  IV., 
  v., 
  VI. 
  & 
  VII. 
  

  

  „ 
  XV. 
  See 
  „ 
  

  

  279—292 
  

  

  Seepages 
  63—132 
  

  

  „ 
  XVI. 
  Sec 
  „ 
  

  

  329— 
  3C6 
  

  

  VIIL 
  See 
  „ 
  133—154 
  

  

  „ 
  XVII. 
  See 
  „ 
  

  

  367—374 
  

  

  IX. 
  See 
  „ 
  155—108 
  

  

  „ 
  XVIII. 
  See 
  „ 
  

  

  403—404 
  

  

  X. 
  & 
  XI. 
  

  

  „ 
  XIX. 
  See 
  „ 
  

  

  473—495 
  

  

  See 
  „ 
  179—195 
  

  

  „ 
  XX. 
  See 
  „ 
  

  

  517—519 
  

  

  XII. 
  See 
  „ 
  197—221 
  

  

  

  

  