﻿196 
  BRITISH 
  LEPIDOPTERA. 
  

  

  on 
  the 
  7th 
  abdominal 
  nearly 
  Olmm. 
  In 
  one 
  specimen, 
  the 
  anal 
  scar 
  

   is 
  large, 
  nearly 
  0-2mm. 
  across, 
  with 
  central 
  incision, 
  marked 
  by 
  

   marginal 
  ridges 
  and 
  wrinkles 
  ; 
  it 
  is 
  in 
  an 
  area 
  of 
  more 
  than 
  twice 
  the 
  

   width, 
  bounded 
  by 
  ridges 
  running 
  down 
  into 
  the 
  cremastral 
  spine 
  and 
  

   running 
  forward 
  and 
  including 
  a 
  circular 
  area 
  smaller 
  than 
  the 
  anal 
  

   scar 
  ; 
  this 
  area 
  is 
  elevated 
  on 
  either 
  side, 
  and 
  carries 
  on 
  each 
  side 
  

   one 
  hair, 
  similar 
  to 
  the 
  cremastral 
  ones, 
  but 
  smaller, 
  and 
  but 
  imper- 
  

   fectly 
  hooked 
  ; 
  posterior 
  to 
  this 
  is 
  another 
  very 
  small 
  one 
  ; 
  the 
  central 
  

   line 
  between 
  the 
  two 
  elevations 
  is 
  smooth 
  and 
  depressed, 
  the 
  rest 
  of 
  the 
  

   area 
  between 
  the 
  ridges 
  is 
  transversely 
  marked 
  by 
  ridges, 
  which, 
  

   however, 
  curve 
  to 
  accommodate 
  the 
  circular 
  area. 
  The 
  cremastral 
  

   spine 
  is 
  a 
  somewhat 
  obtuse 
  cone, 
  with 
  very 
  sharp 
  point 
  ; 
  it 
  carries 
  

   fewer 
  than 
  30 
  hooked 
  hairs, 
  about 
  0-2mm. 
  long, 
  thickened 
  some 
  distance 
  

   before 
  their 
  ends, 
  and 
  with 
  a 
  fish-hook 
  point. 
  The 
  small 
  number 
  of 
  

   hooks, 
  and 
  the 
  obsolete 
  character 
  of 
  the 
  forward 
  group, 
  must 
  be 
  cor- 
  

   related 
  with 
  the 
  cocooning 
  habit. 
  Both 
  summer 
  and 
  winter 
  pupae, 
  

   however, 
  are 
  armed 
  in 
  precisely 
  the 
  same 
  way. 
  The 
  8th 
  abdominal 
  

   segment 
  is 
  very 
  narrow 
  ventrally, 
  and, 
  in 
  the 
  $ 
  , 
  has 
  a 
  rounded 
  central 
  

   notch. 
  The 
  nose-horn 
  is 
  much 
  less 
  developed 
  than 
  in 
  the 
  other 
  

   Platyptiliine 
  species, 
  except 
  perhaps 
  P. 
  gonodactyla. 
  Instead 
  of 
  being 
  a 
  

   salient 
  spike, 
  it 
  is 
  hollow 
  in 
  front 
  (or 
  below) 
  and 
  curved 
  down 
  and 
  for- 
  

   ward, 
  and 
  the 
  apex 
  incurved. 
  In 
  putting 
  the 
  head-parts 
  on 
  a 
  slide, 
  the 
  

   nose-horn 
  submits 
  readily 
  to 
  being 
  flattened 
  ; 
  in 
  Gillmeria 
  pallidactyla 
  

   (bertrami) 
  it 
  will 
  only 
  go 
  down 
  sideways, 
  and 
  twists 
  the 
  other 
  portions. 
  

   The 
  face-parts 
  are 
  wrinkled, 
  the 
  jaws 
  do 
  not 
  quite 
  meet 
  beneath 
  the 
  

   labrum, 
  with 
  its 
  very 
  small 
  lappets 
  on 
  each 
  side 
  of 
  the 
  central 
  notch 
  ; 
  

   a 
  diamond-shaped 
  piece 
  of 
  the 
  labium 
  is 
  visible, 
  the 
  maxillae 
  rapidly 
  

   narrow, 
  and 
  at 
  2- 
  Omm. 
  come 
  to 
  a 
  point, 
  in 
  some 
  specimens 
  finally 
  

   disappearing 
  beneath 
  the 
  legs, 
  in 
  others, 
  maintaining 
  a 
  microscopic 
  

   line 
  at 
  the 
  surface 
  to 
  their 
  termination 
  2 
  -5mm. 
  further 
  on. 
  The 
  1st 
  

   leg 
  broadly 
  abuts 
  against 
  the 
  antenna, 
  the 
  2nd 
  is 
  still 
  further 
  out. 
  

   The 
  1st 
  pair 
  of 
  legs 
  terminate 
  5mm. 
  from 
  head, 
  at 
  level 
  of 
  end 
  of 
  wing- 
  

   margin 
  (but 
  short 
  of 
  apical 
  point) 
  ; 
  the 
  antennae 
  terminate 
  lmm. 
  

   short 
  of 
  this. 
  Beyond 
  the 
  line 
  of 
  hind-margin 
  of 
  wing, 
  the 
  appendages 
  

   lie 
  together 
  in 
  a 
  bundle, 
  fixed 
  together, 
  but 
  free 
  from 
  the 
  body. 
  The 
  

   bundle 
  consists 
  of 
  the 
  2nd 
  and 
  3rd 
  legs 
  (the 
  3rd 
  posterior), 
  side 
  

   by 
  side, 
  extending 
  to 
  l*3mm. 
  beyond 
  line, 
  supported 
  on 
  either 
  side 
  

   by 
  the 
  prolonged 
  wing-apex 
  for 
  about 
  0-7mm. 
  ; 
  this 
  pointed 
  process 
  of 
  

   wing 
  is 
  about 
  0*2mm. 
  wide 
  at 
  its 
  base. 
  The 
  ends 
  of 
  the 
  1st 
  legs 
  just 
  

   appear 
  in 
  front, 
  and 
  from 
  beneath 
  them 
  the 
  ends 
  of 
  the 
  maxillae 
  

   proceed 
  to 
  the 
  same 
  distance 
  as 
  the 
  wing 
  apex. 
  The 
  dorsal 
  head- 
  

   piece 
  is 
  very 
  minute, 
  but 
  carries 
  the 
  eye-cover 
  on 
  dehiscence, 
  the 
  

   prothorax 
  is 
  half 
  as 
  broad 
  as 
  long, 
  0'7mm. 
  x 
  0'4mm. 
  The 
  mesothorax 
  

   is 
  notched 
  at 
  its 
  outer 
  front 
  angle 
  by 
  a 
  hollow 
  7 
  , 
  in 
  which 
  is 
  an 
  elaborate 
  

   cover 
  for 
  the 
  spiracle 
  (the 
  spiracle 
  proper 
  being 
  some 
  way 
  under 
  this 
  

   and 
  rather 
  attached 
  to 
  prothorax 
  when 
  the 
  parts 
  are 
  separated) 
  ; 
  this 
  

   cover 
  is 
  0*2mm. 
  long 
  and 
  0*07mm. 
  wide, 
  fairly 
  rectangular 
  in 
  plan, 
  

   but 
  arched 
  across, 
  and 
  a 
  little 
  from 
  end 
  to 
  end, 
  and 
  is 
  crossed 
  by 
  rows 
  

   of 
  fine 
  spiculae, 
  those 
  in 
  each 
  row 
  connected 
  by 
  raised 
  waved 
  lines. 
  

   The 
  mesothorax 
  also 
  carries 
  the 
  dorsal 
  flanges, 
  wmich 
  are 
  well 
  marked 
  ; 
  

   each 
  is 
  0-12mm. 
  wide, 
  and 
  about 
  0-25mm. 
  from 
  the 
  dorsal 
  line; 
  they 
  

   converge 
  so 
  as 
  almost 
  to 
  touch 
  the 
  middle 
  line 
  at 
  the 
  posterior 
  border 
  

   of 
  the 
  segment, 
  and 
  dwindle 
  so 
  as 
  to 
  be 
  inappreciable 
  on 
  the 
  meta- 
  

  

  