﻿ADKINIA 
  GRAPHODACTYLA. 
  521 
  

  

  Bremgarten, 
  is 
  of 
  the 
  more 
  contrasting 
  tints 
  of 
  " 
  plagiodactylus," 
  but 
  

   without 
  the 
  black 
  marks 
  in 
  the 
  forewings 
  ; 
  two 
  others, 
  from 
  the 
  same 
  

   locality, 
  being 
  very 
  unicolorous. 
  Two 
  from 
  Breslau 
  (Wocke) 
  are 
  

   remarkably 
  well-marked 
  with 
  white, 
  the 
  ground-colour 
  much 
  lighter, 
  

   and 
  only 
  the 
  dark 
  dots 
  and 
  streaks 
  of 
  the 
  forewings 
  conspicuous 
  in 
  a 
  

   fuscous-brown 
  tint. 
  Four 
  examples 
  from 
  Hanover 
  (Glitz) 
  are 
  uniformly 
  

   whitish-grey, 
  with 
  little 
  brown 
  or 
  fuscous 
  shading 
  ; 
  one 
  with 
  only 
  the 
  

   upper 
  lobal 
  streak 
  and 
  cleft 
  dots 
  faintly 
  marked 
  ; 
  the 
  three 
  others 
  with 
  

   these 
  characters 
  distinctly 
  marked 
  (Tutt, 
  October, 
  1906). 
  In 
  a 
  long 
  

   series 
  of 
  the 
  var. 
  pneumonanthes 
  examined, 
  taken 
  at 
  Finkenkrug, 
  there 
  

   is 
  the 
  slightest 
  possible 
  difference 
  in 
  size 
  and 
  markings 
  between 
  the 
  

   first 
  and 
  second 
  broods. 
  We 
  have 
  before 
  us 
  eleven 
  specimens 
  (nine 
  $ 
  s 
  

   and 
  two 
  ? 
  s), 
  takeu 
  June 
  7th, 
  1906, 
  and 
  twenty 
  (ten 
  $ 
  s 
  and 
  ten 
  $ 
  s) 
  

   taken 
  towards 
  the 
  end 
  of 
  July, 
  1906, 
  by 
  Dadd. 
  The 
  excess 
  of 
  $ 
  s 
  in 
  

   the 
  first, 
  and 
  of 
  $ 
  s 
  in 
  the 
  second, 
  batch, 
  makes 
  the 
  former 
  appear 
  

   rather 
  larger 
  and 
  more 
  uniformly 
  marked, 
  the 
  latter 
  rather 
  smaller 
  

   and 
  more 
  contrastingly 
  marked, 
  but 
  actual 
  measurement 
  shows 
  very 
  

   little 
  difference 
  in 
  size, 
  all 
  the 
  £ 
  s 
  being 
  20mm. 
  -21mm. 
  (except 
  one 
  

   about 
  23mm.), 
  whilst 
  the 
  $ 
  s 
  vary 
  from 
  21mm. 
  -23mm. 
  (except 
  one 
  

   of 
  the 
  early 
  brood 
  which 
  is 
  just 
  24mm. 
  Comparing 
  two 
  British 
  

   specimens, 
  $• 
  and 
  $ 
  , 
  loaned 
  by 
  Mathew, 
  one 
  finds 
  that, 
  in 
  tint 
  and 
  

   markings, 
  they 
  are 
  exactly 
  similar 
  to 
  specimens 
  of 
  the 
  second 
  brood 
  

   taken 
  by 
  Dadd, 
  at 
  Finkenkrug. 
  The 
  £ 
  is 
  smaller 
  and 
  rather 
  better 
  

   marked 
  than 
  the 
  $ 
  , 
  but 
  the 
  size 
  of 
  both 
  is 
  somewhat 
  below 
  that 
  of 
  

   the 
  German 
  specimens, 
  the 
  $ 
  being 
  19'5mm., 
  the 
  £ 
  17'5mm., 
  about 
  

   2mm. 
  each 
  less 
  than 
  the 
  smallest 
  examples 
  of 
  the 
  corresponding 
  sex 
  in 
  

   Dadd's 
  consignment. 
  The 
  proportions 
  of 
  the 
  three 
  colours 
  of 
  which 
  the 
  

   forewing 
  may 
  be 
  said 
  to 
  be 
  made 
  up, 
  viz., 
  the 
  grey 
  (or 
  whitish) 
  ground 
  

   colour, 
  the 
  blackish 
  sprinkled 
  costa, 
  and 
  the 
  brownish 
  inner 
  margin, 
  leads 
  

   to 
  considerable 
  difference 
  in 
  the 
  appearance 
  of 
  individual 
  specimens. 
  In 
  

   some 
  the 
  whole 
  of 
  the 
  wing-area 
  is 
  essentially 
  grey, 
  the 
  usually 
  dark 
  

   costa 
  and 
  brownish 
  inner 
  margin 
  being 
  practically 
  obsolete, 
  the 
  dark 
  

   shade 
  (including 
  the 
  little 
  streak) 
  of 
  the 
  upper 
  lobe, 
  the 
  costal 
  triangle 
  

   (including 
  the 
  fissural 
  dots), 
  and 
  the 
  white 
  transverse 
  lobal 
  and 
  

   fissural 
  lines 
  sometimes 
  distinctly 
  marked, 
  but 
  usually 
  only 
  moderately 
  

   so, 
  making 
  the 
  whole 
  wing-area 
  particularly 
  unicolorous 
  in 
  appearance. 
  

   This 
  is 
  almost 
  entirely 
  a 
  $ 
  form. 
  The 
  second 
  form 
  has 
  the 
  brownish 
  

   colour 
  of 
  the 
  inner 
  margin 
  spread 
  over 
  the 
  whole 
  of 
  the 
  median 
  area 
  

   of 
  the 
  wing, 
  occasionally 
  reaching 
  almost 
  to 
  the 
  costa 
  ; 
  the 
  grey 
  

   ground 
  colour 
  is 
  here 
  reduced 
  to 
  the 
  costal 
  and 
  outer 
  lobal 
  areas, 
  and 
  

   the 
  wing 
  itself 
  has' 
  a 
  general 
  brownish 
  or 
  fawn-coloured 
  hue. 
  The 
  

   normally 
  dark 
  costal 
  and 
  lobal 
  markings 
  are 
  usually 
  ill-developed, 
  but 
  

   sometimes 
  clearly 
  and 
  distinctly 
  marked 
  ; 
  this 
  also 
  is 
  usually 
  a 
  $ 
  

   form. 
  The 
  most 
  striking 
  form 
  is 
  one 
  in 
  which 
  the 
  black 
  scaling 
  of 
  

   the 
  costa 
  spreads 
  downwards 
  into 
  the 
  middle 
  of 
  the 
  wing 
  absorbing 
  

   the 
  usual 
  dark 
  markings, 
  and 
  thus 
  making 
  a 
  very 
  conspicuous 
  

   triangular 
  patch, 
  as 
  in 
  the 
  Platyptiliids 
  and 
  Amblvptiliids 
  ; 
  in 
  

   addition, 
  the 
  transverse 
  white 
  lobal 
  and 
  fissural 
  markings 
  arc 
  very 
  

   distinct, 
  and 
  the 
  snow-white 
  costal 
  tip 
  and 
  outer 
  marginal 
  Fringe, 
  

   contrast 
  against 
  the 
  dark 
  marginal 
  outer 
  edge 
  of 
  the 
  wing. 
  This 
  

   dark, 
  contrastingly 
  marked, 
  form 
  is 
  usually 
  <J? 
  . 
  Both 
  sexes 
  differ 
  in 
  

   the 
  distinctness 
  of 
  the 
  discal 
  spot, 
  which, 
  in 
  some, 
  is 
  quite 
  con- 
  

   spicuous, 
  and 
  in 
  others 
  absent, 
  with 
  almost 
  every 
  intermediate 
  form 
  

  

  