﻿428 
  BRITISH 
  LEPIDOPTERA. 
  

  

  close 
  to 
  tubercles. 
  The 
  metathorax 
  appears 
  to 
  be 
  identical, 
  and 
  has 
  

   about 
  35 
  secondary 
  hairs 
  on 
  each 
  side. 
  On 
  the 
  abdominal 
  segments, 
  i 
  

   and 
  v 
  (the 
  front 
  one 
  of 
  subspiraculars) 
  have 
  widely 
  divided 
  ends, 
  the 
  rest 
  

   end 
  in 
  more 
  than 
  usually 
  long, 
  flowing, 
  slender 
  filaments 
  ; 
  i 
  and 
  ii 
  are 
  on 
  

   a 
  single 
  plate, 
  about 
  0-4mm. 
  between 
  these 
  and 
  those 
  of 
  opposite 
  sides 
  ; 
  

   on, 
  say, 
  the 
  4th 
  abdominal 
  segment, 
  the 
  seta 
  on 
  i 
  is, 
  in 
  length, 
  about 
  

   05mm., 
  ii 
  about 
  l-6mm., 
  iii 
  about 
  l-Smm., 
  iv, 
  0*8mm., 
  v, 
  035ram., 
  

   vi, 
  0-35mm., 
  of 
  vii, 
  the 
  longest 
  (the 
  posterior) 
  is 
  about 
  0*5mm., 
  the 
  two 
  

   front 
  ones 
  0-35mm. 
  and 
  0-1 
  5mm. 
  respectively. 
  The 
  secondary 
  hairs 
  are, 
  

   to 
  some 
  extent, 
  grouped 
  ; 
  some 
  20 
  or 
  25 
  form 
  an 
  oval 
  on 
  the 
  dorsum, 
  

   including 
  i 
  and 
  ii 
  of 
  both 
  sides, 
  with 
  centre 
  clear, 
  but 
  one 
  or 
  tw 
  T 
  o 
  hairs 
  

   inside 
  the 
  tubercular 
  plate 
  ; 
  6 
  or 
  7 
  are 
  grouped 
  near 
  iii, 
  and 
  8 
  or 
  

   10 
  about 
  iv+v, 
  which 
  are 
  close 
  together, 
  apparently 
  on 
  one 
  plate, 
  

   immediately 
  below 
  spiracle; 
  there 
  are 
  others 
  about 
  vi 
  and 
  vii, 
  and 
  

   4 
  or 
  5 
  scattered 
  separately 
  along 
  posterior 
  portion 
  of 
  segment. 
  On 
  the 
  

   abdominal 
  segments 
  7 
  and 
  8 
  (with 
  prolegs), 
  vii 
  is 
  represented 
  by 
  

   two 
  hairs 
  only 
  ; 
  three 
  are 
  present 
  on 
  the 
  1st 
  and 
  2nd 
  abdominals, 
  and 
  

   there 
  is 
  a 
  ventral 
  hair 
  (about 
  0-14mm.) 
  on 
  all 
  segments, 
  on 
  the 
  2nd- 
  

   6th 
  abdominal 
  segments 
  just 
  inside 
  proleg. 
  There 
  are 
  here 
  also 
  a 
  few 
  

   secondary 
  hairs. 
  The 
  hairs 
  have 
  the 
  same 
  arrangement 
  on 
  the 
  9th, 
  except 
  

   that 
  vii 
  appears 
  to 
  be 
  absent. 
  On 
  the 
  10th 
  abdominal 
  segment 
  there 
  are 
  

   no 
  hairs, 
  except 
  ten 
  on 
  the 
  bases 
  of 
  the 
  claspers, 
  and 
  on 
  the 
  anal 
  plate 
  

   (which 
  is 
  large, 
  0*8mm. 
  across, 
  transverse 
  in 
  front, 
  semicircular 
  behind). 
  

   The 
  latter 
  has 
  six 
  hairs 
  on 
  the 
  outer 
  border 
  on 
  each 
  side, 
  and 
  two 
  inside 
  

   these 
  in 
  front. 
  A 
  number 
  of 
  (black) 
  dark 
  spots 
  are 
  scattered 
  over 
  the 
  

   disc, 
  larger 
  centrally 
  ; 
  there 
  are 
  six 
  or 
  eight 
  similar 
  spots 
  centrally 
  on 
  the 
  

   9th, 
  and 
  one 
  outside 
  ii, 
  three 
  or 
  four 
  smaller 
  on 
  the 
  8th, 
  and 
  one 
  or 
  two 
  on 
  

   the 
  7th 
  abdominal 
  ; 
  these 
  are 
  similar 
  to 
  the 
  dark 
  spots 
  on 
  the 
  prothoracic 
  

   scutum. 
  The 
  secondary 
  hairs 
  are 
  very 
  short, 
  and 
  vary 
  little 
  in 
  length, 
  

   though 
  a 
  few 
  of 
  the 
  shortest 
  may 
  be 
  as 
  short 
  as 
  0*04mm., 
  and 
  the 
  

   longest 
  0*08mm. 
  They 
  are 
  broad, 
  and 
  widen 
  equally 
  towards 
  bases 
  

   and 
  tips, 
  the 
  tips 
  being: 
  usually 
  darker, 
  and 
  terminating 
  in 
  two 
  to 
  four 
  

   sharp 
  points. 
  The 
  colourless 
  skin 
  -points 
  are 
  very 
  inconspicuous 
  ; 
  on 
  

   the 
  posterior 
  portion 
  of 
  segments 
  they 
  are 
  round 
  nodules, 
  but 
  along 
  

   the 
  front 
  they 
  carry 
  acute 
  points 
  directed 
  backwards; 
  these 
  are 
  

   especially 
  strong, 
  and 
  slightly 
  tinted 
  on 
  prothorax. 
  The 
  distinctions 
  

   between 
  front 
  and 
  back 
  of 
  segment 
  hold 
  throughout 
  ; 
  even 
  the 
  front 
  of 
  

   the 
  anal 
  plate 
  has 
  sharp, 
  and 
  the 
  posterior 
  margin 
  has 
  rounded, 
  points, 
  

   but, 
  on 
  this 
  segment, 
  the 
  sides, 
  down 
  to 
  claspers, 
  also 
  have 
  the 
  

   points 
  spiculated. 
  The 
  hooks 
  on 
  prolegs 
  vary 
  ; 
  in 
  one 
  specimen 
  each 
  

   has 
  two, 
  including 
  claspers, 
  in 
  another 
  they 
  are 
  3,5; 
  4,4; 
  3,3; 
  4,5; 
  

   claspers 
  3,4, 
  and 
  in 
  another 
  vary 
  from 
  2 
  to 
  4. 
  The 
  true 
  legs 
  are 
  

   brown, 
  with 
  a 
  few 
  fine 
  bristles 
  and 
  a 
  sharp 
  claw. 
  The 
  spiracles 
  are 
  

   raised 
  on 
  short 
  cones. 
  The 
  jaws 
  have 
  four 
  teeth, 
  or 
  five 
  if 
  inner 
  

   rounded 
  one 
  is 
  counted. 
  A 
  central 
  eye- 
  spot, 
  and 
  five 
  others 
  in 
  a 
  semi- 
  

   circle 
  round 
  it, 
  the 
  middle 
  one 
  decidedly 
  the 
  largest. 
  Labrum 
  with 
  two 
  

   hairs 
  on 
  disc, 
  and 
  four 
  round 
  margin, 
  on 
  either 
  side 
  (Chapman. 
  May 
  

   10th, 
  1906). 
  [The 
  head 
  black, 
  the 
  body 
  dusky 
  pale 
  green, 
  with 
  a 
  black, 
  

   divided, 
  prothoracic 
  plate. 
  True 
  legs 
  black, 
  abdominal 
  prolegs 
  of 
  the 
  

   colour 
  of 
  the 
  body, 
  with 
  black 
  hooks. 
  On 
  the 
  dorsum 
  of 
  each 
  segment 
  

   are 
  four 
  similar 
  black 
  tubercles, 
  which 
  bear 
  a 
  stellate 
  tuft 
  of 
  strong 
  

   bristles 
  ; 
  also 
  a 
  similar 
  row 
  of 
  tubercles 
  on 
  the 
  sides. 
  The 
  spiracles 
  

   stand 
  out 
  conspicuously 
  (Frey. 
  From 
  larva 
  found 
  towards 
  end 
  of 
  

  

  