﻿448 
  Dr. 
  T. 
  A. 
  Chapman's 
  Notes 
  on 
  Lycaena 
  alcon 
  F. 
  

  

  waist, 
  several 
  ants 
  keep 
  running 
  over 
  it, 
  pale, 
  hardly 
  to 
  

   be 
  called 
  pink. 
  

  

  June 
  25.— 
  12.1 
  p.m. 
  (G.M.T.). 
  No. 
  2 
  has 
  just 
  pupated. 
  

  

  July 
  4. 
  — 
  No. 
  2 
  pupa 
  figured 
  by 
  Mr. 
  Knight. 
  

  

  Mr. 
  Powell 
  tells 
  me 
  that 
  he 
  has 
  succeeded 
  in 
  finding 
  three 
  

   larvae 
  of 
  L. 
  alcon 
  in 
  nests 
  of 
  Myrmica 
  scabrinodis, 
  but 
  not 
  

   in 
  the 
  nests 
  of 
  other 
  ants 
  that 
  he 
  explored. 
  One 
  found 
  on 
  

   June 
  12 
  was 
  about 
  7 
  mm. 
  long. 
  Two 
  found 
  on 
  June 
  30 
  

   were 
  13 
  mm. 
  

  

  These 
  larvae 
  were 
  clearly 
  not 
  so 
  advanced 
  as 
  mine 
  kept 
  

   indoors, 
  which 
  are, 
  however, 
  three 
  weeks 
  in 
  advance 
  of 
  

   the 
  previous 
  year 
  — 
  a 
  difference 
  to 
  be 
  attributed 
  to 
  the 
  

   fact 
  that 
  the 
  clerk 
  of 
  the 
  weather 
  sent 
  us 
  July 
  and 
  August 
  

   instead 
  of 
  May 
  and 
  June. 
  This, 
  of 
  course, 
  affected 
  the 
  

   temperature 
  of 
  my 
  room, 
  though 
  probably 
  not 
  that 
  of 
  the 
  

   ants' 
  nests 
  in 
  the 
  wild, 
  brood 
  and 
  larvae 
  being 
  carried 
  by 
  

   the 
  ants 
  to 
  shallower 
  or 
  deeper 
  apartments 
  as 
  might 
  be 
  

   necessary 
  to 
  secure 
  a 
  desired 
  temperature. 
  

  

  July 
  19. 
  — 
  No. 
  1 
  L. 
  alcon 
  has 
  quite 
  matured 
  in 
  pupa, 
  and 
  

   seems 
  to 
  have 
  been 
  ready 
  to 
  emerge 
  for 
  the 
  last 
  two 
  days, 
  

   certain 
  dark 
  marks 
  on 
  the 
  pupa 
  that 
  appeared 
  shortly 
  

   after 
  change 
  probably 
  cause 
  some 
  adhesions 
  preventing 
  

   emergence. 
  

  

  No. 
  2 
  has 
  black 
  eyes 
  and 
  thickened 
  wings, 
  but 
  as 
  yet 
  

   no 
  coloration. 
  

  

  July 
  21.— 
  9 
  a.m. 
  (G.M.T.). 
  No. 
  2, 
  a 
  $ 
  L. 
  alcon 
  emerged. 
  

  

  Explanation 
  of 
  Plates 
  XXIII-XXVIII. 
  

  

  Lycaena 
  alcon 
  F. 
  

  

  Plate 
  XXIII, 
  fig. 
  1. 
  Lateral 
  view 
  of 
  full-grown 
  larva 
  x 
  4. 
  

  

  Fig. 
  2. 
  Dorsal 
  view 
  of 
  full-grown 
  larva 
  x 
  4. 
  

  

  If 
  these 
  are 
  compared 
  with 
  the 
  figures 
  on 
  PI. 
  DI 
  of 
  tlie 
  16th 
  vol. 
  

   of 
  the 
  " 
  Etudes 
  de 
  Lepidopterologie 
  Comparee," 
  which 
  show 
  the 
  larva 
  

   at 
  a 
  much 
  younger 
  stage, 
  practically 
  that 
  at 
  which 
  it 
  leaves 
  the 
  

   gentian, 
  the 
  great 
  difference 
  in 
  colour 
  due 
  to 
  the 
  extension 
  of 
  the 
  

   sldn, 
  in 
  or 
  immediately 
  beneath 
  which 
  the 
  colour 
  resides, 
  is 
  obvious. 
  

   In 
  the 
  full-grown 
  larva 
  the 
  skin 
  is 
  so 
  stretched 
  and 
  the 
  colour 
  diluted 
  

   by 
  (covering 
  the 
  larger 
  area, 
  that 
  it 
  retains 
  only 
  a 
  faint 
  pink 
  tinge 
  

  

  