﻿394 
  

  

  BRITISH 
  LEPIDOPTERA. 
  

  

  abundant 
  on 
  June 
  24th, 
  1890, 
  at 
  Dursley 
  (Griffiths) 
  ; 
  also 
  at 
  Dursley,, 
  

   May 
  9th-22nd, 
  1893, 
  and 
  June 
  3rd, 
  1895 
  (Bartlett) 
  , 
  June 
  11th, 
  1898, 
  

   at 
  Reigate 
  (Adkin) 
  ; 
  larvae 
  and 
  pupae, 
  at 
  Benfleet, 
  July 
  1st, 
  1900 
  

   (Whittle) 
  ; 
  June 
  llth-14th, 
  1903, 
  at 
  Dover 
  (Tutt) 
  ; 
  some 
  very 
  small, 
  

   on 
  June 
  4th, 
  1904, 
  others 
  fullgrown 
  (and 
  with 
  a 
  few 
  pupae) 
  on 
  June 
  

   22nd, 
  in 
  the 
  Isle 
  of 
  Purbeck 
  (Bankes) 
  ; 
  also 
  on 
  June 
  5th, 
  1904, 
  at 
  

   Cuxton 
  (Ovenden); 
  June 
  8th, 
  1904, 
  at 
  Benfleet 
  (Whittle); 
  June, 
  1905,. 
  

   a 
  fullgrown 
  larva 
  found 
  feeding 
  on 
  one 
  of 
  the 
  plants 
  over 
  which 
  moths 
  

   were 
  enclosed 
  to 
  lay 
  their 
  eggs 
  the 
  previous 
  July 
  (Chapman). 
  

  

  Larva. 
  — 
  First 
  i 
  nst 
  a 
  r 
  (newly-hatched): 
  Barely 
  1mm. 
  in 
  length, 
  nearly 
  

   colourless; 
  head 
  very 
  slightly 
  tinted 
  with 
  black 
  eye-spots; 
  without 
  skin- 
  

   points, 
  tubercular 
  setae 
  in 
  usual 
  positions, 
  but 
  vi 
  absent; 
  spiracles 
  

   very 
  prominent, 
  as 
  hemispherical 
  projections. 
  Tubercles 
  all 
  separate, 
  

   each 
  with 
  one 
  hair 
  — 
  i 
  with 
  a 
  short 
  porrected 
  hair 
  about 
  0-02mm.. 
  

   long; 
  ii 
  with 
  a 
  long 
  hair 
  directed 
  backwards, 
  0*07mm. 
  long 
  (i.e., 
  about 
  

   width 
  of 
  a 
  segment) 
  ; 
  iii 
  with 
  a 
  rather 
  longer 
  bair, 
  0*08mm., 
  directed 
  

   outwards 
  and 
  forwards 
  ; 
  iv 
  very 
  long, 
  about 
  0'09mm., 
  directed 
  outwards 
  ;. 
  

   v 
  short, 
  well 
  above 
  and 
  in 
  front 
  of 
  iv, 
  length 
  about 
  0*03mm. 
  

   Prothorax 
  with 
  the 
  three 
  front 
  hairs 
  of 
  plate 
  about 
  0-05mm. 
  long, 
  the 
  

   central 
  back 
  one 
  very 
  long, 
  0'08mm., 
  two 
  others 
  quite 
  minute 
  ; 
  one 
  

   long 
  hair, 
  0*08nim. 
  long, 
  in 
  prespiracular 
  set, 
  one 
  (perhaps 
  two) 
  minute 
  

   ones 
  with 
  it, 
  two 
  at 
  base 
  of 
  legs. 
  The 
  meso- 
  and 
  metathorax, 
  with 
  

   the 
  usual 
  four 
  pairs 
  of 
  hairs, 
  except 
  that 
  the 
  second 
  hair 
  of 
  the 
  third 
  

   pair 
  is 
  not 
  made 
  out. 
  The 
  true 
  legs 
  not 
  dark, 
  long, 
  with 
  long, 
  slender, 
  

   sharp 
  claws. 
  The 
  prolegs 
  long, 
  slender, 
  delicate, 
  apparently 
  with 
  two 
  

   hooks, 
  but 
  the 
  whole 
  so 
  delicate 
  and 
  colourless 
  that 
  most 
  specimens 
  

   look 
  as 
  if 
  only 
  a 
  fleshy 
  pad 
  existed 
  ; 
  claspers 
  with 
  apparently 
  three 
  

   hooks. 
  Hairs 
  all 
  smooth 
  and 
  sharp-pointed. 
  A 
  very 
  long 
  hair 
  on 
  the 
  

   9th 
  abdominal 
  (? 
  seta 
  on 
  ii). 
  Second 
  instar 
  [stadium 
  preceding 
  

   penultimate 
  moult 
  (see 
  antea, 
  p. 
  391)] 
  : 
  Length, 
  3"3mm. 
  Greyish 
  in 
  

   tint, 
  really 
  white, 
  with 
  numerous 
  black 
  skin-points. 
  Head 
  black 
  ; 
  

   prothoracic 
  and 
  anal 
  plates 
  also 
  black, 
  but 
  not 
  so 
  densely 
  so 
  as 
  not 
  to 
  

   become 
  translucent 
  on 
  magnification. 
  The 
  prothoracic 
  plate 
  with 
  

   three 
  hairs 
  on 
  either 
  side 
  of 
  front 
  margin, 
  and 
  three 
  others 
  at 
  each 
  

   side, 
  one 
  at 
  middle 
  of 
  posterior 
  margin, 
  and 
  a 
  smaller 
  one 
  on 
  either 
  

   side 
  of 
  this, 
  and 
  a 
  little 
  forward 
  of 
  it 
  ; 
  the 
  outer 
  at 
  outer 
  margin 
  

   of 
  plate; 
  in 
  front 
  of, 
  and 
  a 
  little 
  below, 
  the 
  pale 
  rufous 
  projecting 
  

   spiracle, 
  is 
  an 
  angular 
  tubercle 
  with 
  three 
  (?) 
  hairs. 
  All 
  the 
  tubercular 
  

   plates 
  appear 
  black 
  (but 
  magnified 
  are 
  seen 
  to 
  be 
  translucent) 
  ; 
  the 
  

   hairs 
  nearly 
  white. 
  On 
  the 
  meso- 
  and 
  metathorax, 
  the 
  usual 
  double- 
  

   haired 
  tubercles 
  occur, 
  with 
  a 
  small 
  accessory 
  behind 
  the 
  third 
  pair.. 
  

   On 
  the 
  abdominal 
  segments 
  tubercle 
  i 
  has 
  a 
  short 
  porrect 
  hair 
  ; 
  ii 
  has 
  

   a 
  longer 
  hair 
  directed 
  inwards 
  and 
  backwards 
  ; 
  on 
  abdominal 
  

   segments 
  1-6, 
  ii 
  has 
  a 
  secondary 
  hair 
  outside, 
  and 
  behind 
  this 
  one; 
  

   in 
  all 
  cases, 
  the 
  base 
  extends 
  in 
  this 
  direction 
  ; 
  iii 
  has 
  a 
  long 
  hair 
  

   directed 
  upwards 
  and 
  backwards, 
  and 
  there 
  is 
  a 
  faint 
  indication 
  of 
  a 
  

   secondary 
  hair 
  behind 
  it 
  (actually 
  developed 
  in 
  one 
  or 
  two 
  instances, 
  

   e.g., 
  on 
  the 
  5th 
  abdominal) 
  ; 
  iv 
  and 
  v 
  each 
  carry 
  one 
  hair, 
  the 
  front 
  one 
  

   (v) 
  forwards, 
  and 
  slightly 
  higher 
  than 
  the 
  other 
  (iv), 
  which 
  is 
  directed 
  

   backwards 
  ; 
  vi 
  has 
  a 
  short 
  solitary 
  hair, 
  directed 
  slightly 
  backwards 
  ; 
  

   the 
  marginal 
  tubercle, 
  vii, 
  has 
  the 
  three 
  usual 
  hairs. 
  On 
  the 
  9th 
  

   abdominal 
  segment, 
  i 
  and 
  ii 
  are 
  conjoined. 
  The 
  anal 
  plate 
  carries 
  

   five 
  hairs 
  on 
  each 
  side. 
  The 
  hairs 
  are 
  nearly 
  all 
  rather 
  swollen 
  at 
  the 
  

  

  