﻿230 
  , 
  BRITISH 
  LEPIDOPTERA. 
  

  

  (v 
  and 
  vi 
  ?) 
  which 
  possesses, 
  in 
  this 
  species, 
  in 
  all 
  cases, 
  only 
  one 
  

   plate, 
  and 
  is, 
  in 
  one 
  instance 
  (out 
  of 
  12), 
  a 
  single 
  hair; 
  in 
  two 
  cases 
  a 
  

   three-haired 
  wart, 
  and 
  in 
  nine 
  cases, 
  two 
  hairs 
  on 
  one 
  plate, 
  looking 
  in 
  

   several 
  instances 
  rather 
  wartlike. 
  This 
  variability 
  of 
  this 
  pair 
  of 
  

   tubercles 
  has 
  no 
  parallel 
  in 
  the 
  other 
  species, 
  and 
  the 
  presence 
  and 
  

   absence 
  of 
  plates 
  to 
  these 
  tubercles 
  appear 
  to 
  afford 
  clear 
  proof 
  that 
  

   these 
  two 
  are 
  " 
  good 
  " 
  species 
  (Chapman). 
  

  

  Pupation. 
  — 
  Although 
  an 
  internal 
  feeder, 
  this 
  larva 
  leaves 
  its 
  burrow 
  

   when 
  fullfed, 
  spins 
  a 
  tough 
  silken 
  web, 
  usually 
  on 
  the 
  stem 
  of 
  its 
  food- 
  

   plant, 
  to 
  which 
  it 
  attaches 
  itself 
  for 
  pupation, 
  its 
  beautiful 
  colour 
  being 
  

   in 
  the 
  highest 
  degree 
  protective. 
  It 
  has 
  a 
  highly 
  developed 
  cremaster, 
  

   the 
  hooks 
  in 
  two 
  sections, 
  the 
  forward 
  on 
  the 
  front 
  of 
  the 
  9th 
  or 
  back 
  of 
  

   the 
  8th 
  abdominal, 
  the 
  hinder 
  on 
  the 
  10th 
  abdominal 
  segment, 
  by 
  

   means 
  of 
  which 
  it 
  fixes 
  itself 
  to 
  the 
  silken 
  pad. 
  It 
  has 
  the 
  normal 
  

   habit 
  of 
  bending 
  itself 
  over 
  in 
  somersault 
  fashion 
  if 
  disturbed, 
  that 
  is 
  

   noticeable 
  in 
  most 
  of 
  the 
  other 
  species. 
  Buckler 
  observes 
  that 
  it 
  is 
  

   attached 
  by 
  its 
  anal 
  segment 
  to 
  a 
  stem 
  of 
  the 
  foodplant, 
  whilst 
  South 
  

   notes 
  that, 
  in 
  confinement, 
  it 
  is 
  suspended 
  by 
  the 
  tail 
  from 
  the 
  

   underside 
  of 
  a 
  leaf. 
  

  

  Pupa. 
  — 
  $ 
  12*5mm.long, 
  l-8mm.wide 
  at 
  mesothorax, 
  1 
  -5mm. 
  wide 
  

   at 
  4th 
  abdominal. 
  The 
  differences 
  in 
  colour 
  between 
  the 
  pupa 
  of 
  this 
  

   species 
  and 
  that 
  of 
  G. 
  yallidactyla 
  are 
  xery 
  considerable, 
  but 
  they 
  may 
  

   be 
  largely 
  individual. 
  It 
  is 
  also 
  much 
  more 
  slender, 
  a 
  difference 
  that 
  

   may 
  be 
  sexual. 
  The 
  surface 
  is 
  dull, 
  that 
  of 
  G. 
  pallidactyla 
  is 
  very 
  

   shining 
  and 
  polished, 
  the 
  ridges 
  on 
  the 
  mesothorax 
  are 
  wide 
  apart, 
  and, 
  

   on 
  the 
  metathorax, 
  they 
  diverge 
  a 
  little 
  laterally. 
  Seen 
  from 
  above, 
  

   the 
  antennas 
  look 
  more 
  serrate, 
  and 
  stand 
  out 
  as 
  a 
  bordering 
  ridge 
  or 
  

   flange 
  ; 
  in 
  G 
  .-pallidactyla 
  they 
  are 
  more 
  regular, 
  smooth, 
  and 
  rounded, 
  

   and 
  fall 
  into 
  the 
  general 
  outline. 
  The 
  colouring 
  is 
  beautiful, 
  but 
  so 
  

   elaborate 
  as 
  to 
  be 
  difficult 
  to 
  describe 
  ; 
  assuming 
  the 
  ground 
  colour 
  to 
  

   be 
  green, 
  it 
  is 
  overlaid 
  by 
  markings 
  of 
  pink, 
  brown 
  and 
  white 
  ; 
  the 
  white 
  

   comprises 
  a 
  lateral 
  line 
  (flange) 
  below 
  the 
  spiracle 
  and 
  the 
  upper 
  and 
  lower 
  

   surfaces 
  of 
  the 
  " 
  beak;" 
  both 
  these 
  are 
  shaded 
  with 
  pink 
  ; 
  the 
  margins 
  of 
  the 
  

   dorsal 
  flanges 
  on 
  the 
  mesothorax 
  are 
  also 
  white 
  ; 
  the 
  wings 
  and 
  appendages 
  

   are 
  more 
  olive-tinted 
  than 
  the 
  rest 
  of 
  the 
  pupa, 
  the 
  veins 
  are 
  not 
  paler, 
  

   but 
  some 
  of 
  the 
  interstices 
  are 
  olive-brown, 
  showing 
  up 
  the 
  veins 
  ; 
  the* 
  

   sides 
  of 
  the 
  beak 
  are 
  brown 
  ; 
  below 
  the 
  white 
  flange 
  is 
  a 
  dark 
  pinkish- 
  

   olive 
  band, 
  then 
  a 
  broad 
  green 
  band 
  shaded 
  with 
  pink, 
  with 
  dashes 
  of 
  

   olive-green 
  down 
  the 
  centre 
  of 
  each 
  segment, 
  these 
  do 
  not 
  form 
  a 
  line, 
  

   as 
  they 
  do 
  not 
  reach 
  the 
  margins 
  of 
  the 
  segments; 
  the 
  venter 
  is 
  broadly 
  

   pale 
  olive-green. 
  Dorsally, 
  the 
  subdorsal 
  ridges 
  are 
  pale 
  reddish-pink 
  

   on 
  the 
  last 
  4th 
  of 
  the 
  mesothorax, 
  and 
  on 
  the 
  metathorax, 
  and 
  1 
  st, 
  2nd, 
  and 
  

   3rd 
  abdominal 
  segments, 
  culminating 
  on 
  the 
  1st, 
  2nd, 
  and 
  3rd 
  abdominal 
  

   segments 
  in 
  a 
  dark 
  red- 
  brown 
  spot 
  at 
  the 
  outer 
  side 
  of 
  the 
  posterior 
  

   end 
  of 
  the 
  portion 
  on 
  each 
  segment. 
  This 
  colouring 
  is 
  repeated 
  on 
  the 
  

   following 
  segments 
  (where 
  there 
  is 
  no 
  flange), 
  but 
  more 
  weakly 
  on 
  each, 
  

   so 
  that, 
  on 
  the 
  7th 
  abdominal 
  segment, 
  there 
  is 
  merely 
  a 
  pink 
  dot 
  

   representing 
  the 
  dark 
  spot 
  of 
  previous 
  segments. 
  Between 
  these 
  is 
  a 
  

   dark 
  olive-green 
  dorsal 
  line, 
  and 
  another 
  (subdorsal) 
  at 
  an 
  equal 
  distance 
  

   outside 
  the 
  flange 
  ; 
  there 
  is 
  another 
  broader 
  band 
  above 
  the 
  white 
  

   lateral 
  flange 
  ; 
  this 
  is 
  somewhat 
  irregular, 
  and 
  is 
  interrupted 
  by 
  a 
  pale 
  spot 
  

   round 
  the 
  spiracles 
  and 
  another 
  behind, 
  giving 
  it 
  a 
  chain-like 
  appear- 
  

   ance 
  ; 
  each 
  antenna 
  has 
  a 
  row 
  of 
  olive-brown 
  dots 
  down 
  each 
  side, 
  in 
  

  

  