﻿XXX 
  VI 
  

  

  hung 
  vertically 
  from 
  its 
  hind 
  claspers 
  and 
  was 
  clearly 
  shorter 
  

   and 
  stouter. 
  

  

  May 
  26. 
  — 
  In 
  same 
  position. 
  About 
  noon 
  taken 
  down 
  and 
  

   found 
  to 
  be 
  about 
  2\ 
  in. 
  long 
  in 
  the 
  extended 
  jjosition. 
  The 
  

   larva 
  was 
  then 
  dropped 
  into 
  the 
  white 
  surroundings 
  and 
  

   wriggled 
  violently 
  for 
  a 
  second 
  or 
  two 
  directly 
  it 
  fell 
  among 
  

   the 
  paper 
  strips. 
  It 
  then 
  became 
  perfectly 
  still, 
  holding 
  with 
  

   its 
  true 
  legs 
  to 
  one 
  strip, 
  the 
  middle 
  of 
  the 
  body 
  lying 
  across 
  

   another 
  with 
  the 
  hinder 
  half 
  hanging 
  free. 
  Li 
  this 
  uncom- 
  

   fortable 
  position 
  it 
  remained 
  for 
  probably 
  an 
  hour, 
  but 
  by 
  

   1.20 
  p.m. 
  it 
  had 
  ventured 
  to 
  raise 
  the 
  hinder 
  part 
  sufficiently 
  

   to 
  seize 
  another 
  strip 
  with 
  the 
  claspers. 
  There 
  can 
  be 
  no 
  

   doubt 
  that 
  the 
  behaviour 
  witnessed 
  was 
  instinctive 
  and 
  such 
  

   as 
  to 
  protect 
  the 
  caterpillar 
  when 
  attacked, 
  first 
  by 
  burying 
  it 
  

   more 
  deeply 
  in 
  the 
  undergrowth 
  after 
  it 
  had 
  fallen, 
  secondly 
  by 
  

   promoting 
  its 
  concealment 
  in 
  the 
  depths 
  it 
  had 
  reached. 
  By 
  

   3.37 
  it 
  had 
  climbed 
  to 
  the 
  position 
  in 
  which 
  it 
  very 
  deliberately 
  

   constructed 
  its 
  cocoon, 
  the 
  labour 
  being 
  postponed 
  and 
  also, 
  

   I 
  think, 
  interrupted 
  by 
  long 
  pauses 
  during 
  which 
  the 
  larva 
  

   hung 
  vertically 
  from 
  its 
  hind 
  claspers. 
  Pupation 
  took 
  place 
  

   on 
  May 
  31. 
  It 
  is 
  during 
  this 
  long 
  prepupational 
  period 
  — 
  

   seven 
  days 
  in 
  the 
  larva 
  under 
  observation 
  — 
  that 
  the 
  colour 
  

   of 
  the 
  pupa 
  is 
  doubtless 
  determined, 
  and 
  it 
  is 
  possible 
  that 
  

   the 
  long 
  pauses 
  in 
  a 
  vertical 
  position 
  are 
  specially 
  related 
  to 
  

   the 
  incidence 
  of 
  environmental 
  stimuli. 
  

  

  As 
  regards 
  the 
  earlier 
  phase 
  it 
  was 
  evident 
  that 
  the 
  larva 
  

   maintained 
  its 
  day 
  position 
  until 
  about 
  9.30 
  p.m., 
  when 
  the 
  

   light 
  was 
  .becoming 
  dim. 
  It 
  is 
  unfortunate, 
  however, 
  that 
  

   the 
  hour 
  could 
  not 
  be 
  observed 
  on 
  May 
  18, 
  when 
  the 
  larva 
  

   began 
  feeding, 
  although 
  without 
  change 
  of 
  position, 
  as 
  early 
  

   as 
  6.40 
  p.m. 
  

  

  The 
  mimicry 
  of 
  an 
  ant 
  by 
  an 
  Australian 
  Fossorial 
  

   WASP. 
  — 
  Prof. 
  PoULTON 
  said 
  that 
  he 
  wished 
  to 
  call 
  the 
  atten- 
  

   tion 
  of 
  the 
  Fellows 
  to 
  an 
  interesting 
  example 
  of 
  mimicry 
  

   described 
  in 
  Mr. 
  R. 
  E. 
  Turner's 
  systematic 
  paper 
  in 
  Ann. 
  

   Mag. 
  N. 
  H., 
  Ser. 
  8, 
  vol. 
  xv, 
  Jan. 
  1915, 
  p. 
  64. 
  The 
  mimic 
  

   was 
  Aphelotoma 
  tasmanica, 
  Westw. 
  {Ampulicinae), 
  found 
  in 
  

   S.E. 
  Australia 
  and 
  as 
  far 
  north 
  as 
  Brisbane, 
  as 
  well 
  as 
  in 
  

   Tasmania. 
  Mr. 
  Turner's 
  observations 
  were 
  as 
  follows 
  : 
  — 
  

  

  