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  BRITISH 
  LEPIDOPTERA. 
  

  

  prominent, 
  and 
  remarkable 
  for 
  its 
  double, 
  white, 
  dorsal 
  ridge; 
  the 
  

   wings 
  finely 
  striated 
  with 
  white, 
  and 
  much 
  swollen 
  at 
  the 
  inner 
  

   margin, 
  where 
  the 
  hindwing 
  projects 
  ; 
  there 
  is 
  a 
  well-developed 
  supra- 
  

   spiracular 
  white 
  line 
  extending 
  from 
  the 
  base 
  of 
  the 
  wing 
  to 
  the 
  anus, 
  

   whilst 
  the 
  abdominal 
  segments 
  are 
  also 
  lined 
  with 
  white 
  longi- 
  

   tudinally, 
  and 
  a 
  mediodorsal 
  linear 
  depression 
  extends 
  from 
  the 
  

   mesothorax 
  to 
  the 
  anus, 
  an 
  extension 
  of 
  the 
  more 
  highly-developed 
  

   depression 
  between 
  the 
  two 
  prominent 
  ridges 
  of 
  the 
  mesothorax; 
  the 
  

   prominent 
  apex 
  of 
  the 
  beak, 
  the 
  mesothorax, 
  and 
  the 
  anal 
  points, 
  tinged 
  

   with 
  reddish-brown 
  [Tutt, 
  May 
  27th, 
  1904, 
  from 
  pupa 
  found 
  at 
  

   Higham.] 
  Pupa 
  13-5mm. 
  long, 
  2-5mm. 
  wide 
  at 
  mesothorax, 
  and 
  

   2mm. 
  at 
  the 
  4th 
  abdominal. 
  Seen 
  dorsally, 
  there 
  is 
  a 
  great 
  deal 
  of 
  

   the 
  bulbousness 
  of 
  thorax 
  noticeable 
  in 
  many 
  "plume" 
  pupae; 
  seen 
  

   laterally, 
  the 
  beak 
  in 
  front, 
  and 
  the 
  dorsal 
  ridge 
  or 
  crest, 
  take 
  away 
  a 
  good 
  

   deal 
  of 
  this. 
  The 
  pupa 
  is 
  of 
  a 
  delicate 
  green 
  tint, 
  with 
  reddish-pink 
  

   outlining 
  the 
  ridges 
  on 
  the 
  meso- 
  and 
  metathorax 
  ; 
  a 
  darker 
  shade 
  under 
  

   the 
  beak 
  ; 
  the 
  head 
  dorsally, 
  prothorax, 
  and 
  part 
  of 
  mesothorax 
  white 
  ; 
  

   there 
  is 
  also 
  a 
  white 
  lateral 
  line 
  as 
  in 
  the 
  larva. 
  Dorsal 
  line 
  darker. 
  

   The 
  spiracle 
  is 
  on 
  an 
  interrupted 
  paler 
  line 
  ; 
  there 
  is 
  a 
  narrow 
  con- 
  

   tinuous 
  one 
  above; 
  then 
  a 
  broader, 
  darker 
  band; 
  then 
  a 
  very 
  broad 
  

   pale 
  one 
  besides 
  the 
  dorsal 
  line, 
  divided, 
  however, 
  into 
  two 
  by 
  a 
  slender 
  

   dark 
  line 
  ; 
  below 
  the 
  white 
  lateral 
  line 
  is 
  a 
  darker 
  one, 
  a 
  pale 
  one, 
  a 
  very 
  

   narrow 
  dark 
  one, 
  then 
  pale; 
  the 
  wings 
  and 
  appendages 
  pale, 
  the 
  hollows 
  

   darker 
  ; 
  the 
  neuration 
  marked 
  by 
  raised 
  white 
  ribs 
  ; 
  some 
  of 
  the 
  hollows 
  

   between 
  these, 
  at 
  the 
  dorsal 
  marginal 
  portion, 
  pinkish-olive. 
  The 
  

   beak 
  projects 
  beyond 
  the 
  ventral 
  line, 
  but 
  its 
  lower 
  margin 
  curves 
  

   regularly 
  to 
  the 
  face 
  and 
  maxilla? 
  (Chapman, 
  May 
  26th, 
  1904). 
  

   [The 
  pupa 
  from 
  which 
  the 
  following 
  description 
  is 
  made 
  has 
  failed 
  to 
  

   free 
  the 
  antennae 
  successfully 
  from 
  the 
  head, 
  and 
  they 
  have 
  not 
  fallen 
  

   into 
  their 
  proper 
  grooves, 
  and 
  the 
  pupal 
  head 
  is 
  bent 
  forward, 
  so 
  that 
  

   the 
  well-developed 
  central 
  spine, 
  or 
  nose-horn, 
  which 
  stands 
  out 
  as 
  a 
  stout 
  

   beak, 
  projects 
  ventrally, 
  instead 
  of 
  directly, 
  forwards, 
  as 
  it 
  probably 
  

   ought.] 
  The 
  pupa 
  is 
  green, 
  with 
  white 
  markings 
  and 
  over-colouring. 
  

   It 
  is 
  quite 
  smooth, 
  so 
  that 
  even 
  tubercular 
  bristles 
  seem 
  to 
  be 
  quite 
  

   absent. 
  At 
  the 
  3rd 
  and 
  4th 
  abdominal 
  segments 
  it 
  is 
  fairly 
  cylindrical, 
  

   tapering 
  slightly, 
  and 
  then 
  more 
  rapidly, 
  to 
  the 
  cremaster, 
  which 
  consists 
  

   of 
  the 
  forward 
  and 
  terminal 
  groups 
  of 
  fine 
  hooks, 
  each 
  group 
  rather 
  

   small. 
  The 
  only 
  sculpturing, 
  beyond 
  the 
  pronounced 
  beak, 
  is 
  a 
  strongly 
  

   marked 
  ridge 
  on 
  either 
  side 
  of 
  the 
  dorsum 
  of 
  the 
  mesothorax, 
  the 
  

   median 
  line 
  being 
  at 
  the 
  bottom 
  of 
  a 
  groove 
  between 
  them. 
  The 
  

   median 
  line 
  is 
  an 
  indication 
  of 
  a 
  suture. 
  The 
  ridges 
  are 
  white, 
  

   conspicuous 
  on 
  the 
  green 
  ground 
  colour, 
  approximate 
  as 
  they 
  proceed 
  

   backwards, 
  where 
  they 
  are 
  broader, 
  and 
  tinted 
  with 
  pale 
  reddish-brown 
  ; 
  

   at 
  the 
  posterior 
  margin 
  of 
  the 
  segment 
  they 
  do 
  not 
  quite 
  meet, 
  the 
  

   median 
  line 
  intervening 
  ; 
  or 
  they 
  might 
  be 
  described 
  as 
  meeting 
  

   without 
  uniting. 
  On 
  the 
  prothorax 
  there 
  are 
  no 
  such 
  ridges, 
  but 
  the 
  

   surface 
  is 
  waved 
  upwards 
  where 
  they 
  would 
  have 
  been, 
  if 
  present. 
  

   On 
  the 
  metathorax, 
  the 
  same 
  ridges 
  are 
  present, 
  just 
  meeting 
  at 
  its 
  

   margins, 
  but 
  leaving 
  a 
  hollow 
  between 
  them 
  at 
  the 
  middle 
  of 
  the 
  

   segment 
  ; 
  they 
  are 
  here 
  broad, 
  flat, 
  white, 
  with 
  a 
  brownish 
  wash 
  at 
  

   their 
  margins. 
  On 
  the 
  1st, 
  2nd 
  and 
  3rd 
  abdominal 
  segments 
  the 
  same 
  

   ridge 
  is 
  present, 
  but 
  fainter 
  on 
  each, 
  till, 
  on 
  the 
  4th, 
  one 
  must 
  say 
  it 
  is 
  

   absent, 
  though 
  some 
  coloration, 
  etc., 
  suggests 
  that 
  it 
  really 
  proceeds 
  along 
  

  

  