﻿480 
  BRITISH 
  LEPIDOPTEEA. 
  

  

  Mr. 
  Bankes 
  from 
  the 
  Isle 
  of 
  Purbeck, 
  rather 
  differently 
  tinted 
  

   from 
  the 
  others, 
  being 
  much 
  redder 
  ; 
  it 
  is 
  rather 
  under 
  4mm. 
  

   in 
  length. 
  The 
  head 
  is 
  black, 
  the 
  ocelli 
  still 
  blacker, 
  the 
  mouth- 
  

   parts 
  brown, 
  the 
  chin 
  white; 
  studded 
  with 
  comparatively 
  long 
  

   white 
  hairs. 
  The 
  prothorax 
  is 
  remarkably 
  long 
  (front 
  to 
  back), 
  

   gradually 
  increasing 
  in 
  width 
  to 
  the 
  mesothorax, 
  projecting 
  some- 
  

   what 
  in 
  a 
  point 
  medially 
  over 
  the 
  head, 
  divided 
  distinctly 
  into 
  

   two 
  halves, 
  the 
  front 
  half 
  not 
  haired, 
  glossy 
  white 
  in 
  tint, 
  retractile 
  

   with 
  the 
  head 
  into 
  the 
  hinder 
  half, 
  on 
  which 
  the 
  dorsal 
  warts 
  

   form 
  a 
  broad, 
  transverse, 
  bristly, 
  prothoracic 
  hood, 
  the 
  hairs 
  of 
  

   which, 
  when 
  the 
  larva 
  is 
  in 
  repose, 
  form 
  a 
  protecting 
  cover 
  to 
  

   the 
  head. 
  The 
  body 
  segments 
  — 
  mesothorax 
  to 
  anus 
  — 
  are 
  of 
  a 
  delicate 
  

   reddish 
  tint, 
  with 
  deeply-cut, 
  bright, 
  orange-yellow, 
  intersegmental 
  

   incisions 
  ; 
  on 
  each 
  segment 
  the 
  tubercles 
  are 
  arranged 
  in 
  a 
  transverse 
  

   ring 
  of 
  warts 
  — 
  on 
  the 
  thoracic 
  segments 
  as 
  i 
  + 
  ii, 
  iii 
  + 
  iv, 
  v, 
  vii, 
  and 
  on 
  

   the 
  abdominals 
  as 
  i 
  + 
  ii, 
  iii, 
  iv+v, 
  vi, 
  vii 
  — 
  of 
  which 
  i 
  + 
  ii, 
  iii, 
  iv 
  + 
  v 
  are 
  

   large 
  and 
  raised 
  on 
  an 
  elevated 
  base, 
  vi 
  of 
  moderate 
  size 
  (low, 
  with 
  one 
  

   long, 
  black-based, 
  central 
  hair), 
  and 
  vii 
  of 
  small 
  size 
  (low, 
  with 
  two 
  

   long, 
  black-based, 
  central 
  hairs) 
  ; 
  the 
  bases 
  of 
  the 
  raised 
  warts 
  are 
  

   silvery-white, 
  inclining 
  to 
  be 
  transparent 
  and 
  glassy, 
  the 
  flat 
  apex 
  dark 
  

   grey, 
  from 
  which 
  a 
  number 
  of 
  long, 
  serrate, 
  blunt-ended 
  hairs 
  spring 
  

   from 
  black, 
  shining, 
  chitinous 
  bases, 
  rising 
  in 
  two 
  alternate 
  rows, 
  one 
  

   below 
  the 
  other, 
  with 
  one 
  large 
  central 
  hair 
  ; 
  the 
  long 
  hairs 
  appear 
  to 
  

   be 
  rather 
  darker, 
  but, 
  in 
  general 
  appearance, 
  they 
  are 
  almost 
  like 
  spun 
  

   glass 
  ; 
  vi 
  appears 
  to 
  be 
  lost 
  on 
  the 
  prothoracic 
  segments, 
  and, 
  as 
  already 
  

   noted, 
  i 
  + 
  ii 
  make, 
  on 
  the 
  prothorax, 
  a 
  long 
  transverse 
  wart. 
  The 
  

   posterior 
  edges 
  of 
  the 
  segments 
  are 
  also 
  white. 
  There 
  appear 
  to 
  be 
  

   two 
  sub^egments 
  to 
  each 
  segment, 
  the 
  hinder 
  exceedingly 
  narrow. 
  

   The 
  reddish 
  body-colour 
  breaks 
  up, 
  under 
  a 
  lens, 
  into 
  somewhat 
  

   moderately-developed 
  mediodorsal, 
  subdorsal, 
  and 
  supraspiracular 
  

   longitudinal 
  rows. 
  The 
  anal 
  segment 
  is 
  covered 
  with 
  black 
  chitin, 
  

   from 
  which 
  arise 
  numerous 
  white 
  hairs, 
  similar 
  to 
  those 
  on 
  the 
  warts, 
  

   but 
  shorter. 
  The 
  shagreening 
  of 
  the 
  skin 
  on 
  the 
  dorsal 
  surface 
  is 
  very 
  

   striking, 
  the 
  raised 
  points 
  looking 
  (under 
  certain 
  lights) 
  like 
  drops 
  of 
  

   shiny 
  liquid. 
  The 
  projecting 
  black 
  spiracles 
  form 
  also 
  a 
  very 
  

   striking 
  feature. 
  The 
  dorsal 
  surface 
  carries 
  a 
  number 
  of 
  irregular, 
  

   scattered, 
  secondary 
  hairs, 
  similar 
  to. 
  but 
  smaller 
  than, 
  those 
  on 
  the 
  

   tubercular 
  areas 
  ; 
  one 
  surmises 
  that 
  those 
  on 
  the 
  posterior 
  portion 
  of 
  

   the 
  mesothorax 
  and 
  metathorax 
  have 
  a 
  definite 
  morphological 
  value. 
  

   (They 
  appear 
  to 
  suggest 
  a 
  duplication 
  of 
  the 
  dorsal 
  warts). 
  The 
  

   venter 
  is 
  whitish 
  in 
  tint, 
  with 
  very 
  clear 
  yellow-orange 
  intersegmental 
  

   incisions, 
  and 
  few 
  scattered 
  hairs. 
  The 
  prolegs 
  are 
  long, 
  slender, 
  

   glassy-looking, 
  almost 
  transparent, 
  although 
  tinged 
  with 
  black 
  ; 
  the 
  

   proleg 
  hooks 
  are 
  also 
  black 
  ; 
  the 
  anal 
  legs 
  are 
  also 
  very 
  long, 
  and 
  well 
  

   developed, 
  glassy 
  in 
  appearance, 
  and 
  tinged 
  with 
  black. 
  The 
  true 
  legs 
  

   are 
  glassy, 
  almost 
  transparent, 
  grey-black, 
  each 
  with 
  a 
  single, 
  sharply 
  

   back-curved, 
  hook 
  (Tutt. 
  Larva?, 
  April 
  27th, 
  from 
  the 
  Isle 
  of 
  Purbeck, 
  

   sent 
  by 
  Mr. 
  Bankes). 
  Plump, 
  slug-shaped, 
  grey 
  in 
  colour 
  ; 
  tapering 
  to 
  

   either 
  end 
  ; 
  4th 
  and 
  5th 
  abdominal 
  segments 
  are 
  the 
  largest, 
  as 
  regards 
  

   girth, 
  while 
  the 
  8th 
  is 
  probably 
  slightly 
  the 
  longest 
  ; 
  the 
  segmentation 
  

   very 
  marked 
  in 
  the 
  Arctiid 
  or 
  Anthrocerid 
  fashion, 
  the 
  incisions 
  being 
  

   very 
  deeioly 
  cleft. 
  The 
  larva 
  rests 
  with 
  its 
  body 
  curved. 
  Head 
  glassy 
  in 
  

   appearance, 
  very 
  dark 
  brown, 
  almost 
  black 
  on 
  crown. 
  Body: 
  The 
  

   skin 
  is 
  pale 
  flesh-coloured, 
  whiter 
  on 
  dorsal 
  area, 
  and, 
  where 
  it 
  

  

  