﻿374 
  BRITISH 
  LEPIDOPTERA. 
  

  

  contents 
  of 
  the 
  alimentary 
  canal. 
  [Probably 
  the 
  feeding 
  larva 
  would 
  

   vary 
  in 
  colour 
  if 
  the 
  larva? 
  could 
  be 
  got 
  to 
  feed 
  exclusively 
  on 
  petals 
  or 
  

   seeds, 
  instead 
  of 
  leaves. 
  The 
  young 
  larva 
  eats 
  the 
  buds; 
  in 
  inter- 
  

   mediate 
  stages 
  it 
  rests 
  largely 
  on 
  the 
  flower-spikes, 
  and 
  eats 
  the 
  

   flower-buds 
  ; 
  the 
  older 
  larvae 
  prefer 
  the 
  leaves, 
  or, 
  at 
  least, 
  do 
  not 
  

   confine 
  themselves 
  to 
  the 
  flower- 
  spikes.] 
  Length 
  now 
  about 
  14mm., 
  

   thickest 
  about 
  the 
  4th 
  and 
  5th 
  abdominal 
  segments, 
  thence 
  tapering 
  

   to 
  each 
  end, 
  fairly 
  cylindrical, 
  with 
  long 
  slender 
  pedicels 
  to 
  prolegs. 
  

   When 
  young, 
  in 
  last 
  skin, 
  certain 
  paler 
  skin-markings 
  and 
  black 
  

   secondary 
  hairs 
  give 
  the 
  larva 
  a 
  muddled, 
  dirty, 
  look. 
  The 
  general 
  

   surface 
  is 
  clothed 
  with 
  minute 
  black 
  skin-points, 
  except 
  on 
  certain 
  

   paler 
  (white 
  ?) 
  marks, 
  where 
  they 
  are 
  colourless. 
  These 
  white 
  marks 
  

   have 
  the 
  look 
  of 
  depending 
  on 
  some 
  white 
  substances 
  beneath 
  the 
  skin. 
  

   They 
  form, 
  especially, 
  a 
  line 
  below 
  i 
  and 
  ii, 
  and 
  a 
  lateral 
  (subspiracular) 
  

   line. 
  There 
  are 
  also 
  other 
  islets 
  between 
  ; 
  these 
  must 
  be 
  fat- 
  bodies, 
  as 
  

   they 
  do 
  not 
  appear 
  before 
  the 
  larva 
  has 
  grown 
  a 
  little 
  in 
  this 
  skin, 
  and, 
  

   before 
  they 
  appear, 
  the 
  skin-points 
  have 
  not 
  become 
  black. 
  Tubercles 
  

   i 
  and 
  ii 
  each 
  carry 
  one 
  long 
  white 
  hair, 
  and 
  a 
  good 
  many 
  secondary 
  ones, 
  

   black 
  and 
  white 
  ; 
  one 
  of 
  these 
  black 
  ones 
  on 
  each, 
  but 
  especially 
  on 
  ii, 
  is 
  so 
  

   long 
  and 
  spiculated, 
  that 
  doubt 
  arises 
  whether 
  it, 
  or 
  the 
  white 
  (smooth) 
  

   one, 
  is 
  the 
  primary 
  bristle 
  ; 
  the 
  secondary 
  hairs 
  on 
  iii 
  are 
  7 
  black 
  and 
  

   2 
  white. 
  There 
  is 
  a 
  postspiracular 
  tubercle 
  carrying 
  5 
  black 
  and 
  2 
  

   white 
  hairs, 
  all 
  of 
  which 
  look 
  secondary. 
  Tubercles 
  iv 
  + 
  v 
  carry 
  2 
  

   long 
  hairs 
  (upper 
  in 
  front), 
  and 
  4 
  black 
  and 
  4 
  white 
  secondary 
  hairs. 
  

   There 
  is 
  a 
  small 
  tubercle 
  with 
  several 
  short 
  hairs 
  a 
  little 
  below 
  this 
  

   at 
  the 
  postspiracular 
  margin 
  of 
  segment. 
  Below 
  the 
  flange 
  is 
  a 
  tubercle 
  

   with 
  1 
  long 
  hair 
  and 
  several 
  short 
  secondaries, 
  a 
  double 
  one 
  (with 
  

   secondaries) 
  lower 
  down. 
  The 
  secondary 
  hairs 
  scattered 
  over 
  the 
  

   surface 
  are 
  generally 
  white 
  — 
  a 
  good 
  many, 
  however, 
  black 
  dorsally 
  ; 
  

   between 
  the 
  two 
  white 
  lines 
  there 
  are 
  about 
  30 
  to 
  35, 
  the 
  neighbour- 
  

   hood 
  of 
  the 
  spiracles 
  is 
  clear 
  of 
  them 
  (Chapman). 
  Length 
  10mm.- 
  

   12mm., 
  width 
  2mm. 
  Lateral 
  view: 
  Head 
  very 
  small, 
  yellowish- 
  

   green, 
  mottled 
  with 
  deep 
  brown 
  ; 
  three 
  pairs 
  of 
  elongate 
  marks 
  

   down 
  the 
  suture, 
  a 
  curved 
  mark 
  with 
  a 
  straight 
  one 
  below 
  it 
  on 
  

   the 
  lobes 
  above 
  the 
  ocelli, 
  which 
  are 
  situated 
  in 
  a 
  deep 
  brown 
  patch 
  ; 
  

   mouthparts 
  brown. 
  Head 
  retractile 
  within 
  prothorax. 
  Prothorax 
  

   small, 
  mesothorax 
  much 
  larger, 
  metathorax 
  slightly 
  larger 
  than 
  meso- 
  

   thorax. 
  The 
  2nd 
  abdominal 
  segment 
  is 
  the 
  largest, 
  and 
  the 
  body 
  

   tapers 
  off 
  from 
  this 
  segment 
  to 
  the 
  10th 
  abdominal. 
  The 
  legs 
  are 
  

   small, 
  and 
  the 
  claspers 
  long 
  and 
  slender. 
  The 
  pale 
  subdorsal 
  line 
  and 
  

   pale 
  lateral 
  flange 
  are 
  very 
  noticeable. 
  Segmental 
  divisions 
  very 
  well 
  

   marked. 
  [When 
  the 
  larva 
  is 
  at 
  rest, 
  it 
  certainly 
  reminds 
  the 
  observer 
  

   of 
  an 
  Attacid 
  larva. 
  The 
  small 
  head 
  is 
  held 
  down 
  close 
  to 
  the 
  legs, 
  

   and 
  partly 
  buried 
  in 
  the 
  prothorax, 
  which 
  is, 
  in 
  its 
  turn, 
  much 
  

   overshadowed 
  by 
  the 
  mesothorax. 
  The 
  warts, 
  with 
  their 
  fascicles 
  of 
  

   black 
  or 
  white 
  hairs, 
  also 
  tend 
  to 
  heighten 
  the 
  resemblance 
  to 
  an 
  Attacid 
  

   larva.] 
  Dorsal 
  view: 
  Head 
  hidden 
  by 
  the 
  prothorax, 
  which 
  is 
  nearly 
  

   itself 
  hidden 
  by 
  the 
  mesothorax. 
  The 
  mesothorax 
  is 
  larger, 
  and, 
  

   though 
  the 
  body 
  increases 
  slightly 
  in 
  width 
  to 
  the 
  2nd 
  abdominal 
  

   segment, 
  and 
  from 
  there 
  tapers 
  to 
  the 
  10th 
  abdominal 
  segment, 
  yet 
  

   the 
  difference 
  in 
  the 
  width 
  is 
  so 
  small, 
  that 
  the 
  body 
  appears 
  almost 
  the 
  

   same 
  width 
  from 
  the 
  mesothorax 
  to 
  the 
  6th 
  abdominal 
  segment. 
  The 
  

   dark 
  mediodorsal 
  line 
  and 
  the 
  pale 
  subdorsal 
  lines 
  are 
  conspicuous, 
  

   as 
  well 
  as 
  the 
  black 
  dorsal 
  hairs, 
  and 
  the 
  long 
  pale 
  lateral 
  hairs 
  (Sich, 
  

  

  