﻿the 
  Life 
  History 
  of 
  Lycaena 
  euphemus. 
  457 
  

  

  trained 
  all 
  the 
  species 
  of 
  Mynnica 
  involved, 
  in 
  its 
  special 
  

   habits, 
  and 
  that 
  all 
  this 
  took 
  place 
  at 
  so 
  distant 
  a 
  date, 
  

   and 
  through 
  so 
  long 
  a 
  period, 
  that 
  the 
  necessary 
  instincts 
  

   are 
  deeply 
  and 
  firmly 
  impressed 
  on 
  the 
  several 
  species 
  of 
  

   Myrmica, 
  so 
  that 
  they 
  remain 
  ready 
  to 
  act 
  on 
  demand, 
  

   though 
  they 
  may 
  not 
  have 
  been 
  exercised 
  for 
  what 
  in 
  

   human 
  chronology 
  we 
  might 
  call 
  ages. 
  

  

  I 
  may 
  give 
  a 
  rather 
  fuller 
  description 
  of 
  the 
  egg 
  and 
  

   1st 
  instar, 
  but 
  a 
  very 
  detailed 
  description 
  of 
  the 
  three 
  

   following 
  instars 
  seems 
  unnecessary 
  in 
  view 
  of 
  the 
  figures 
  

   by 
  Mr. 
  Knight 
  (PI. 
  XXX) 
  and 
  the 
  photographs 
  of 
  the 
  

   mounted 
  skins 
  (PI. 
  XXXI-XXXV), 
  especially 
  as 
  I 
  have 
  

   mentioned 
  various 
  points 
  concerning 
  them 
  in 
  other 
  

   connections, 
  

  

  I 
  add 
  also 
  my 
  notes 
  from 
  day 
  to 
  day 
  to 
  illustrate 
  various 
  

   items 
  in 
  the 
  habits 
  of 
  the 
  larvae. 
  A 
  possible 
  redundancy 
  

   here 
  and 
  there 
  may 
  be 
  useful, 
  as 
  giving 
  the 
  facts 
  from 
  a 
  

   slightly 
  different 
  point 
  of 
  view. 
  

  

  July 
  31. 
  — 
  ^The 
  egg 
  regarded 
  as 
  of 
  the 
  usual 
  cheese 
  shape 
  

   of 
  Lycaenid 
  eggs 
  has 
  the 
  top 
  raised 
  as 
  a 
  slight 
  dome, 
  and 
  

   the 
  bottom 
  is 
  also 
  raised, 
  i. 
  e. 
  not 
  quite 
  flat. 
  The 
  egg 
  is 
  

   green 
  above 
  and 
  below 
  and 
  the 
  side 
  stands 
  out 
  as 
  a 
  white 
  

   zone, 
  the 
  sides 
  having 
  some 
  of 
  the 
  white 
  material 
  usual 
  

   on 
  Lycaenid 
  eggs, 
  the 
  top 
  and 
  bottom 
  being 
  without 
  it. 
  

   The 
  sides 
  are 
  nearly 
  vertical, 
  perhaps 
  slightly 
  narrower 
  

   above 
  than 
  below. 
  The 
  egg 
  is 
  0"6 
  mm. 
  wide, 
  0*35 
  high. 
  

   The 
  lateral 
  zone 
  is 
  0*23 
  wide 
  (or 
  high), 
  the 
  difference 
  between 
  

   0*23 
  and 
  0-35, 
  viz. 
  0-12, 
  marks 
  the 
  fullness 
  of 
  the 
  upper 
  

   and 
  lower 
  portions, 
  say 
  0*08 
  for 
  the 
  top, 
  0"04 
  for 
  the 
  bottom. 
  

   The 
  cells 
  of 
  the 
  white 
  sculpturing 
  of 
  the 
  sides 
  are 
  shallow, 
  

   square 
  rather 
  than 
  hexagonal, 
  but 
  of 
  various 
  forms, 
  and 
  

   about 
  0'02 
  in 
  diameter. 
  The 
  top 
  also 
  has 
  a 
  network, 
  

   tending 
  to 
  be 
  more 
  hexagonal, 
  without 
  any 
  adventitious 
  

   white 
  material, 
  and 
  towards 
  the 
  margin 
  at 
  least 
  with 
  cells 
  

   larger 
  than 
  those 
  of 
  the 
  sides, 
  the 
  transition 
  being 
  at 
  a 
  

   very 
  marked 
  and 
  definite 
  line, 
  as 
  is 
  the 
  lower 
  margin 
  of 
  

   the 
  lateral 
  zone 
  also. 
  The 
  actual 
  measurement 
  shows 
  

   these 
  cells 
  to 
  be 
  very 
  slightly 
  larger 
  than 
  those 
  of 
  the 
  

   zone, 
  but 
  the 
  want 
  of 
  the 
  white 
  coat 
  makes 
  them 
  look 
  

   larger 
  comparatively. 
  

  

  When 
  hatched 
  the 
  larva 
  is 
  about 
  1 
  mm. 
  long, 
  of 
  a 
  light 
  

   greyish 
  tint, 
  due 
  to 
  its 
  interior 
  structures, 
  the 
  skin 
  seeming 
  

   to 
  be 
  transparent 
  and 
  colourless. 
  I 
  have 
  not 
  seen 
  it 
  when 
  

   grown, 
  but 
  suppose 
  it 
  acquires 
  something 
  of 
  the 
  ruddy 
  

  

  