﻿OXYPTILUS 
  PILOSELLAE. 
  4 
  39 
  

  

  sides 
  of 
  the 
  shaft. 
  (5) 
  The 
  wings 
  markedly 
  narrower 
  than 
  those 
  of 
  

   heterodactyla. 
  (6) 
  The 
  first 
  fascia 
  crossing 
  the 
  lobes 
  of 
  the 
  forewings 
  

   always 
  composed 
  of 
  a 
  line, 
  not 
  a 
  blotch, 
  as 
  is 
  frequently 
  the 
  case 
  in 
  

   heterodactyla. 
  (7) 
  The 
  contrast 
  in 
  colour 
  between 
  the 
  fore- 
  and 
  hind- 
  

   wings, 
  heterodactyla 
  having 
  them 
  almost 
  identical 
  in 
  hue. 
  (8) 
  The 
  

   underside 
  of 
  the 
  first 
  plumule 
  of 
  the 
  hindwings 
  not 
  so 
  mottled 
  as 
  in 
  

   heterodactyla, 
  but 
  with 
  a 
  much 
  more 
  elongate 
  and 
  distinct 
  white 
  spot 
  near 
  

   the 
  apex." 
  Comparing 
  the 
  Dover 
  examples 
  with 
  Crombrugghia 
  distans, 
  

   Webb 
  notes 
  (in 
  litt.) 
  : 
  " 
  Pilosellae 
  is 
  not 
  so 
  pale 
  in 
  colour, 
  nor 
  so 
  coarsely 
  

   scaled 
  as 
  distans, 
  but 
  comes 
  nearer 
  to 
  it 
  in 
  the 
  width 
  of 
  the 
  wing 
  ; 
  

   some 
  specimens 
  come, 
  indeed, 
  very 
  near 
  distans, 
  but 
  there 
  are 
  no 
  hoary 
  

   scales 
  along 
  the 
  inner 
  margin, 
  and 
  the 
  tuft, 
  of 
  course, 
  is 
  different 
  ; 
  in 
  

   the 
  nearest 
  examples 
  they 
  can 
  be 
  separated 
  by 
  a 
  glance 
  at 
  the 
  underside. 
  

   The 
  fasciae 
  crossing 
  the 
  lobes 
  of 
  the 
  forewings 
  are 
  parallel 
  in 
  pilosellae, 
  

   and 
  the 
  outer 
  one 
  makes 
  a 
  continuous 
  line; 
  in 
  distans 
  this 
  outer 
  one 
  is 
  

   not 
  a 
  continuous 
  line, 
  but 
  the 
  parts 
  in 
  the 
  first 
  and 
  second 
  lobes 
  

   enclose 
  an 
  obtuse 
  angle 
  ; 
  in 
  distans, 
  too, 
  the 
  pale 
  fringes 
  surround 
  the 
  

   first 
  lobe, 
  and 
  another 
  pale 
  line 
  runs 
  from 
  the 
  centre 
  of 
  the 
  fascia 
  to 
  

   the 
  tip 
  ; 
  in 
  pilosellae 
  the 
  fringes 
  are 
  only 
  pale 
  on 
  the 
  costa." 
  Barrett 
  

   gives 
  (Ent. 
  Mo. 
  Mag., 
  xxv., 
  p. 
  431) 
  a 
  comparative 
  summary 
  of 
  the 
  

   British 
  Oxyptilines 
  and 
  hieracii. 
  This 
  reads 
  as 
  follows 
  : 
  — 
  

  

  Pilosellae. 
  — 
  The 
  costal 
  margin 
  much 
  arched 
  beyond 
  the 
  middle, 
  so 
  that 
  the 
  

   apex 
  is 
  long, 
  pointed, 
  and 
  drooping. 
  The 
  two 
  pale 
  fasciae 
  (which, 
  in 
  all 
  these 
  

   species, 
  cross 
  the 
  lobes 
  of 
  the 
  forewings) 
  yellowish-white, 
  oblique, 
  not 
  very 
  narrow, 
  

   nor 
  well-defined. 
  The 
  third 
  feather 
  of 
  the 
  hindwing 
  with 
  a 
  large 
  brown 
  tuft 
  of 
  

   scales 
  near 
  the 
  tip. 
  

  

  Hieracii. 
  — 
  Of 
  the 
  same 
  size, 
  but 
  with 
  the 
  costal 
  margin 
  less 
  arched, 
  and 
  the 
  

   apex 
  more 
  blunt 
  and 
  squared 
  ; 
  the 
  fasciae 
  more 
  perpendicular, 
  narrower, 
  and 
  more 
  

   sharply 
  defined. 
  The 
  tuft 
  on 
  the 
  third 
  feather 
  of 
  the 
  hindwing 
  is 
  brown, 
  and 
  is 
  

   situated 
  just 
  beyond 
  the 
  middle. 
  

  

  Parvidactyla. 
  — 
  Considerably 
  smaller, 
  of 
  the 
  colour 
  of 
  pilosellae, 
  and 
  with 
  

   oblique 
  fasciae, 
  but 
  these 
  are 
  narrow, 
  bright, 
  and 
  sharply 
  defined 
  ; 
  the 
  costal 
  margin 
  

   much 
  less 
  arched, 
  and 
  the 
  tips 
  less 
  produced, 
  though 
  hardly 
  so 
  blunt 
  as 
  in 
  hieracii. 
  

   The 
  dark 
  tuft 
  on 
  the 
  third 
  feather 
  of 
  the 
  hindwing 
  is 
  large, 
  and 
  placed 
  nearly 
  at 
  

   the 
  tip. 
  

  

  Distans. 
  — 
  Of 
  a 
  paler 
  duller 
  colour 
  than 
  the 
  three 
  foregoing, 
  and 
  its 
  pale 
  fasciae 
  

   so 
  placed 
  as 
  to 
  resemble 
  crescents, 
  especially 
  when 
  the 
  insect 
  is 
  alive 
  and 
  at 
  rest. 
  

   Its 
  shape 
  and 
  size 
  are 
  similar 
  to 
  those 
  of 
  hieracii, 
  and 
  the 
  tuft 
  on 
  the 
  third 
  feather 
  

   of 
  the 
  hindwing 
  is 
  similarly 
  placed, 
  though 
  small 
  and 
  inconspicuous, 
  but 
  the 
  

   species 
  is 
  at 
  once 
  distinguished 
  by 
  its 
  broad, 
  ill-defined, 
  pale 
  fasciae. 
  

  

  Heterodactyla. 
  — 
  Perhaps 
  the 
  largest 
  of 
  the 
  group 
  ; 
  its 
  wings 
  decidedly 
  broader, 
  

   and, 
  from 
  its 
  dark 
  colour 
  and 
  bright 
  white 
  markings, 
  it 
  is 
  by 
  far 
  the 
  most 
  handsome. 
  

   The 
  costal 
  margin 
  much 
  rounded, 
  the 
  tips 
  long 
  and 
  drooping, 
  the 
  fasciae 
  fairly 
  

   broad 
  and 
  brightly 
  defined, 
  and 
  the 
  inner 
  (dorsal) 
  margin 
  of 
  the 
  forewings 
  edged 
  

   with 
  bright 
  white 
  cilia, 
  in 
  which 
  are 
  three 
  black 
  dashes. 
  The 
  third 
  feather 
  of 
  the 
  

   hindwing 
  has 
  a 
  large 
  blackish 
  tuft, 
  and 
  the 
  anterior 
  portion 
  of 
  the 
  feather 
  is 
  white, 
  

   with 
  numerous 
  black 
  dots. 
  

  

  Bankes, 
  commenting 
  (Ent. 
  I\cc, 
  xviii., 
  p. 
  16) 
  on 
  bhe 
  above, 
  suggests 
  

   that 
  Barrett 
  cannot 
  have 
  had 
  the 
  true 
  hieracii, 
  Zell., 
  before 
  him, 
  for 
  

   he 
  says 
  that 
  the 
  dorsal 
  scale-tooth 
  ("tuft") 
  of 
  the 
  third 
  feather 
  of 
  the 
  

   hindwing 
  is 
  situated 
  "just 
  beyond 
  the 
  middle." 
  whereas 
  Zeller 
  

   himself 
  says 
  that 
  it 
  lies 
  "a 
  little 
  before 
  the 
  apex." 
  It 
  would 
  appear 
  

   that 
  Barrett 
  could 
  not 
  have 
  based 
  this 
  remark 
  on 
  the 
  specimens 
  in 
  

   his 
  collection 
  received 
  from 
  Zeller, 
  and 
  which 
  are 
  now 
  in 
  Chapman's 
  

   possession 
  and 
  under 
  observation 
  as 
  we 
  write, 
  since 
  they 
  show 
  

   the 
  scale-tuft 
  near 
  the 
  apex, 
  as 
  in 
  pilosellae, 
  and 
  as 
  /oiler 
  describes 
  

   it 
  (Tutt). 
  Speaking 
  of 
  hieracii, 
  /idler 
  writes 
  (Linn. 
  Ent., 
  vi.. 
  

   pp. 
  850-851): 
  "This 
  species 
  is 
  generally 
  larger 
  than 
  /'. 
  pilosellae, 
  

  

  