﻿ADKINIA 
  ZOPHODACTYLUS. 
  821 
  

  

  areas, 
  the 
  inner 
  margin 
  somewhat 
  browned. 
  The 
  race 
  has 
  a 
  more 
  

   robust 
  appearance 
  than 
  the 
  Canterbury 
  examples, 
  which 
  are 
  also 
  

   somewhat 
  browned 
  on 
  the 
  inner 
  margin, 
  as 
  well 
  as 
  the 
  paler 
  Cuxton 
  

   specimens. 
  Barrett 
  says 
  that 
  the 
  species 
  is 
  hardly 
  variable, 
  except 
  

   that 
  often 
  the 
  markings 
  are 
  hardly 
  visible 
  ; 
  bat 
  in 
  the 
  most 
  strongly 
  

   marked 
  specimens 
  two 
  black 
  dots 
  are 
  sometimes 
  visible 
  in 
  the 
  cilia 
  

   of 
  the 
  anterior 
  lobes 
  of 
  the 
  forewings. 
  Bankes 
  writes 
  (in 
  litt.) 
  : 
  

   "Somewhat 
  variable, 
  the 
  brown 
  colour 
  of 
  the 
  forewing 
  ranging 
  from 
  

   light 
  brown 
  to 
  deep 
  fuscous, 
  with 
  the 
  whitish 
  scaling 
  in 
  excess 
  in 
  the 
  

   former, 
  and 
  rather 
  deficient 
  in 
  the 
  latter, 
  case; 
  the 
  tone 
  of 
  the 
  hind- 
  

   varies 
  with 
  that 
  of 
  the 
  forewing, 
  and 
  there 
  is 
  every 
  intermediate 
  

   form 
  between 
  the 
  two 
  extremes. 
  In 
  my 
  lengthy 
  series, 
  both 
  the 
  

   palest 
  and 
  the 
  darkest 
  specimens 
  hail 
  from 
  the 
  same 
  spot 
  in 
  Purbeck, 
  

   though 
  some 
  Essex 
  examples 
  are 
  hardly 
  less 
  pale 
  than 
  the 
  former. 
  As 
  

   regards 
  size, 
  the 
  largest 
  individual 
  therein 
  expands 
  19-5mm., 
  while 
  

   the 
  smallest 
  measures 
  only 
  16- 
  5mm." 
  In 
  the 
  Frey 
  collection, 
  the 
  

   specimens 
  from 
  Frankfurt 
  are 
  strongly 
  sprinkled 
  with 
  white 
  scales 
  ; 
  

   the 
  two 
  dots 
  at 
  the 
  end 
  of 
  the 
  fissure 
  are 
  developed 
  into 
  well-marked 
  

   streaks, 
  whilst 
  the 
  discal 
  dot 
  is 
  also 
  in 
  the 
  form 
  of 
  a 
  streak 
  ; 
  the 
  inner 
  

   margin 
  is 
  very 
  little 
  tinged 
  with 
  brown. 
  The 
  Zurich 
  specimens 
  in 
  

   the 
  same 
  collection 
  are 
  rather 
  large, 
  also 
  much 
  sprinkled 
  with 
  white 
  

   scales, 
  but 
  the 
  dots 
  all 
  ill-developed 
  and 
  the 
  inner 
  marginal 
  area 
  not 
  

   tinted 
  with 
  brow 
  r 
  n. 
  The 
  Begensburg 
  specimen 
  is 
  particularly 
  

   noticeable 
  for 
  the 
  development 
  of 
  the 
  transverse 
  line 
  in 
  the 
  upper 
  

   lobe 
  of 
  the 
  forewing. 
  Two 
  Kelheim 
  specimens, 
  bred 
  from 
  gentian, 
  

   are 
  very 
  like 
  some 
  British 
  examples, 
  in 
  which 
  the 
  upper 
  of 
  the 
  fissural 
  

   dots 
  is 
  modified 
  into 
  a 
  shade 
  stretching 
  towards 
  the 
  costa. 
  The 
  

   different 
  forms 
  group 
  themselves 
  as 
  follows 
  : 
  — 
  

  

  1. 
  Whitish 
  ; 
  the 
  costal 
  area 
  greyish, 
  with 
  ill-developed 
  fissural 
  and 
  discal 
  

   dots 
  — 
  ab. 
  pallid 
  a- 
  obsoleta, 
  n. 
  ab. 
  

  

  la. 
  As 
  in 
  1, 
  but 
  with 
  well- 
  developed 
  fissural 
  and 
  discal 
  dots 
  — 
  ab. 
  pallida, 
  

   n. 
  ab. 
  

  

  2. 
  Slaty-grey, 
  sprinkled 
  thinly 
  with 
  white 
  scales 
  medially 
  ; 
  with 
  ill-developed 
  

   fissural 
  and 
  discal 
  spots 
  = 
  ab. 
  ardoisea-obsoleta, 
  n. 
  ab. 
  

  

  2a. 
  As 
  in 
  2, 
  but 
  with 
  well-developed 
  fissural 
  and 
  discal 
  dots 
  = 
  ab. 
  ardoisea, 
  

   n. 
  ab. 
  

  

  26. 
  As 
  in 
  2 
  or 
  2a, 
  but 
  with 
  the 
  inner 
  margin 
  brownish 
  = 
  ab. 
  ardoisea-fusca, 
  

   n. 
  ab. 
  

  

  2c. 
  As 
  in 
  2a 
  or 
  26, 
  but 
  with 
  the 
  median 
  area 
  strongly 
  sprinkled 
  with 
  white 
  

   scales 
  medially 
  from 
  base 
  to 
  apex 
  = 
  ab. 
  ardoisea-variegata, 
  n. 
  ab. 
  

  

  3. 
  Dark 
  slaty-grey, 
  sprinkled 
  thinly 
  with 
  white 
  scales 
  medially 
  ; 
  with 
  ill- 
  

   developed 
  fissural 
  and 
  discal 
  spots 
  = 
  ab. 
  obscura-obsoleta, 
  n. 
  ab. 
  

  

  3a. 
  As 
  in 
  3, 
  but 
  with 
  well-developed 
  fissural 
  and 
  discal 
  dots 
  = 
  ab. 
  obscura, 
  

   n. 
  ab. 
  

  

  36. 
  As 
  in 
  3 
  or 
  3a, 
  but 
  with 
  the 
  inner 
  margin 
  brownish 
  = 
  ab. 
  obscura-fusca 
  

   n. 
  ab. 
  

  

  3c. 
  As 
  in 
  '6a 
  or 
  36, 
  but 
  with 
  the 
  median 
  area 
  strongly 
  sprinkled 
  with 
  white 
  

   scales 
  medially 
  from 
  base 
  to 
  apex 
  = 
  ab. 
  obscura-variegata, 
  n. 
  ab. 
  

  

  4. 
  Costal 
  area 
  blackish-grey 
  ; 
  inner 
  margin 
  brown 
  ; 
  with 
  well-developed 
  

   fissural 
  and 
  discal 
  spots 
  = 
  zophodactylus* 
  , 
  Dup. 
  

  

  The 
  reference 
  of 
  hodgkinsoni, 
  dregs., 
  to 
  this 
  species, 
  as 
  a 
  variety, 
  by 
  

   Barrett 
  (hint. 
  Mo. 
  Mag,, 
  xviii., 
  p. 
  180) 
  and 
  ourselves 
  (Pter, 
  Brit*, 
  p, 
  

   95), 
  proves 
  to 
  be 
  quite 
  erroneous; 
  Bankes 
  says 
  (in 
  litt.) 
  that 
  the 
  

  

  * 
  Duponchel's 
  description, 
  "entirely 
  dark 
  In 
  own-blaokish," 
  etc., 
  is 
  very 
  poor 
  ; 
  

   his 
  published 
  figure 
  little 
  better. 
  Our 
  diagnosis 
  here 
  is 
  taken 
  from 
  both. 
  

  

  