﻿OXYPTILUS 
  pilosell^:. 
  437 
  

  

  round 
  Nirdorf 
  and 
  Reichstadt 
  (according 
  to 
  Fischer 
  v. 
  Roslerstamm's 
  

   information) 
  (Zeller). 
  

  

  Imago. 
  — 
  17mm.- 
  19mm. 
  Forewings 
  orange-brown 
  or 
  pale 
  

   cinnamon 
  in 
  colour; 
  an 
  oblique 
  white 
  transverse 
  band 
  (or 
  shade), 
  

   sometimes 
  very 
  obscure 
  before 
  the 
  middle 
  ; 
  the 
  base 
  of 
  the 
  fissure 
  

   edged 
  by 
  a 
  whitish 
  cloud 
  ; 
  beyond 
  this 
  is 
  a 
  broad, 
  sharply-defined, 
  

   white 
  stripe, 
  crossing 
  both 
  lobes, 
  and 
  not 
  strongly 
  angulated 
  ; 
  beyond 
  

   this 
  a 
  slender 
  similar 
  stripe; 
  the 
  fringes 
  of 
  the 
  upper 
  lobe 
  brown, 
  

   blackish 
  at 
  anal 
  angle, 
  of 
  the 
  lower 
  lobe, 
  brown, 
  with 
  a 
  pale 
  ochreous 
  

   patch 
  in 
  outer 
  marginal 
  hollow, 
  and 
  strikingly 
  blackish 
  between 
  bases 
  

   of 
  lobal 
  transverse 
  lines. 
  Hindwings 
  with 
  the 
  plumules 
  dark 
  golden- 
  

   brown, 
  thickly 
  sprinkled 
  with 
  minute 
  dark 
  scales, 
  the 
  fringes 
  very 
  dark 
  

   smoky-brown, 
  the 
  third 
  lobe 
  with 
  some 
  white 
  cilia 
  towards 
  the 
  tip, 
  but 
  

   interrupted 
  by 
  a 
  broad 
  triangular 
  brown-black 
  tuft, 
  the 
  margin 
  of 
  this 
  

   plumule 
  with 
  a 
  series 
  of 
  isolated 
  conspicuous 
  black 
  scales. 
  

  

  Sexual 
  dimorphism. 
  — 
  The 
  2 
  , 
  easily 
  recognised 
  by 
  its 
  wider 
  and 
  

   more 
  pointed 
  abdomen, 
  is 
  usually 
  distinctly 
  smaller 
  than 
  the 
  $ 
  , 
  

   tending 
  to 
  show 
  more 
  conspicuously 
  the 
  white 
  abdominal 
  dorsal 
  

   streaks 
  and 
  chestnut-brown 
  lateral 
  markings 
  (as 
  noted 
  by 
  Zeller). 
  The 
  

   ground 
  colour 
  of 
  2 
  is 
  usually 
  bright, 
  the 
  pale 
  markings 
  well-developed, 
  

   both 
  on 
  the 
  forewings 
  and 
  the 
  3rd 
  plumule 
  of 
  the 
  hindwings. 
  

  

  Variation. 
  — 
  One 
  may 
  look 
  over 
  a 
  very 
  fair 
  number 
  of 
  British 
  

   examples 
  of 
  this 
  species 
  and 
  get 
  the 
  idea 
  that 
  this 
  is 
  not 
  a 
  variable 
  

   species, 
  and 
  this 
  appears 
  to 
  be 
  accurate 
  so 
  far 
  as 
  there 
  are 
  no 
  striking 
  

   aberrations 
  that 
  attract 
  notice. 
  There 
  is, 
  however, 
  some 
  little 
  minor 
  

   variation 
  observable 
  in 
  size, 
  tint, 
  and 
  intensity 
  of 
  markings. 
  In 
  size, 
  

   specimens 
  in 
  our 
  own 
  series 
  vary 
  from 
  a 
  little 
  over 
  19mm., 
  to 
  not 
  

   much 
  over 
  16mm., 
  the 
  smallest, 
  however, 
  in 
  almost 
  all 
  cases 
  being 
  2 
  s. 
  

   In 
  tint, 
  the 
  specimens 
  are 
  of 
  a 
  cinnamon-brown 
  or 
  pale 
  chestnut 
  colour, 
  

   not 
  far 
  removed 
  from 
  the 
  shade 
  found 
  in 
  the 
  darkest 
  and 
  brightest 
  

   examples 
  of 
  Marasuiarcha 
  lunaedactyla, 
  but 
  with 
  a 
  redder 
  tone, 
  i.e., 
  

   distinctly 
  more 
  intense 
  than 
  in 
  Crombriu/t/Jria 
  distans, 
  and 
  without 
  the 
  

   tendency 
  to 
  chocolate 
  so 
  characteristic 
  of 
  Capperia 
  heterodactyla. 
  This 
  

   brighter 
  form 
  appears 
  to 
  be 
  Zeller's 
  type, 
  but 
  occasional 
  specimens 
  are 
  

   distinctly 
  duller 
  and 
  greyer 
  in 
  hue 
  ( 
  = 
  ab. 
  suft'itsa, 
  n. 
  ab.), 
  and 
  without 
  

   the 
  brightness 
  of 
  the 
  form 
  just 
  noted 
  ; 
  these 
  duller-tinted 
  individuals 
  

   also 
  usually 
  have 
  fewer 
  and 
  less 
  strongly 
  developed 
  white 
  dots 
  and 
  

   markings, 
  those 
  at 
  the 
  fissure, 
  middle 
  of 
  the 
  wing, 
  and 
  on 
  the 
  lower 
  

   lobe, 
  showing 
  the 
  greatest 
  tendency 
  to 
  fail. 
  The 
  best 
  marked 
  of 
  the 
  

   brighter 
  brown 
  specimensare 
  considerably 
  variegated 
  and 
  show 
  conspicu- 
  

   ously 
  a 
  short 
  longitudinal 
  shade 
  of 
  white 
  scales 
  above 
  the 
  base 
  of 
  the 
  

   median 
  nervure 
  ; 
  three 
  short 
  longitudinal 
  white 
  streaks, 
  or 
  shades, 
  on 
  the 
  

   disc 
  and 
  inner 
  margin, 
  one 
  below 
  the 
  other 
  (the 
  remnant 
  of 
  a 
  transverse 
  

   band), 
  a 
  patch 
  of 
  white 
  scales 
  at 
  the 
  end 
  of 
  the 
  fissure, 
  internally 
  edged 
  

   with 
  the 
  darker 
  discal 
  lunular-mark 
  ; 
  the 
  first 
  lobal 
  transverse 
  lino 
  broad, 
  

   crossing 
  both 
  lobes, 
  widening 
  and 
  occupying 
  considerable 
  space 
  on 
  the 
  

   lower 
  lobe; 
  the 
  second 
  lobal 
  transverse 
  line 
  narrow, 
  and 
  continued 
  

   over 
  both 
  lobes, 
  but 
  not 
  extending 
  into 
  the 
  fringes: 
  the 
  cbsta 
  from 
  the 
  

   second 
  lobal 
  line 
  to 
  apex 
  white, 
  with 
  sundry 
  white 
  scales 
  scattered 
  

   over 
  the 
  lobes 
  and 
  the 
  costa 
  between 
  the 
  discal 
  shade 
  and 
  firs! 
  lobal 
  

   transverse 
  line. 
  This 
  is 
  Zeller's 
  typical 
  form, 
  Other 
  examples 
  of 
  the 
  

   brighter 
  orange-brown 
  or 
  cinnamon 
  form 
  are 
  less 
  distinctly 
  marked, 
  the 
  

   white 
  basal 
  and 
  discal 
  streaks 
  failing, 
  also, 
  in 
  part, 
  the 
  transverse 
  Lines 
  

  

  