﻿294 
  PBOCEEDINGS 
  OF 
  THE 
  FOL-HTH 
  ENTOMOLOGICAL 
  MEETING 
  

  

  whicli 
  apparently 
  assist 
  the 
  larva 
  in 
  locomotion. 
  The 
  jaws 
  begin 
  from 
  

   the 
  middle 
  of 
  the 
  second 
  segment 
  and 
  terminate 
  near 
  the 
  apex 
  without 
  

   quite 
  reaching 
  it. 
  The 
  tracheae 
  run 
  along 
  almost 
  the 
  entire 
  length 
  of 
  

   the 
  larva 
  from 
  the 
  anal 
  region 
  up 
  to 
  second 
  segment, 
  and, 
  after 
  ramify- 
  

   ing, 
  terminate 
  in 
  two 
  pairs 
  of 
  spiracles. 
  Both 
  pairs 
  of 
  spiracles 
  open 
  

   dorsally, 
  one 
  close 
  to 
  the 
  posterior 
  apex 
  and 
  the 
  other 
  just 
  beyond 
  

   the 
  second 
  segment, 
  the 
  larva 
  being 
  therefore 
  amphipneustic. 
  The 
  

   antennge 
  are 
  represented 
  by 
  two 
  conelike 
  jointed 
  prominences 
  occupying 
  

   the 
  dorsal 
  pre-apical 
  portions. 
  The 
  fat 
  bodies 
  run 
  in 
  a 
  somewhat 
  zig- 
  

   zag 
  fashion 
  extending 
  from 
  just 
  beyond 
  the 
  posterior 
  end 
  of 
  the 
  tenth 
  

   segment 
  to 
  near 
  the 
  anterior 
  end 
  of 
  the 
  fourth. 
  The 
  anal 
  segment 
  h 
  

   furnished 
  with 
  two 
  fairly 
  big 
  defined 
  prominences 
  the 
  use 
  of 
  which 
  

   is 
  not 
  understood. 
  

  

  The 
  larvge 
  are 
  negatively 
  heliotropic 
  ; 
  though 
  habitually 
  very 
  slug- 
  

   gish, 
  when 
  exposed 
  to 
  the 
  bright 
  glare 
  of 
  the 
  sun, 
  they 
  try 
  to 
  hide 
  them- 
  

   selves 
  in 
  the 
  folds 
  and 
  corners 
  of 
  the 
  leaves 
  with 
  remarkable 
  rapidity. 
  

   To 
  successfully 
  breed 
  them 
  out 
  a 
  very 
  careful 
  regulation 
  of 
  moisture 
  

   is 
  necessary. 
  The 
  leaves 
  offered 
  as 
  food 
  should 
  not 
  be 
  in 
  an 
  advanced 
  

   state 
  of 
  putrefaction 
  and 
  moisture 
  should 
  be 
  supplied 
  preferably 
  twice 
  

   a 
  day. 
  The 
  larva3 
  seem 
  to 
  live 
  upon 
  the 
  scrapings 
  of 
  the 
  leaves 
  rejecting 
  

   the 
  net-like 
  reticulation. 
  They 
  have 
  a 
  characteristically 
  wrinkled 
  

   appearance. 
  

  

  Larval 
  period 
  is 
  from 
  7 
  to 
  10 
  days. 
  

  

  The 
  larvae 
  pupate 
  on 
  both 
  sides 
  of 
  dry 
  leaves. 
  

  

  The 
  pupa, 
  which 
  is 
  about 
  4 
  mm. 
  in 
  length, 
  is 
  convex, 
  dirty 
  brown 
  

   with 
  a 
  greenish 
  tinge, 
  with 
  scattered 
  white 
  chalky 
  patches, 
  bluntly 
  

   tapering 
  at 
  both 
  ends, 
  the 
  posterior 
  end 
  being 
  more 
  pointed 
  than 
  the 
  

   anterior, 
  indistinctly 
  divided 
  into 
  thirteen 
  segments, 
  the 
  lines 
  of 
  seg- 
  

   mental 
  divisions 
  being 
  more 
  deeply 
  coloured 
  than 
  the 
  segments 
  them- 
  

   selves. 
  These 
  lines 
  except 
  the 
  first 
  and 
  the 
  last 
  pairs 
  are 
  followed 
  

   posteriorly 
  by 
  short 
  dark 
  lines. 
  The 
  antennse 
  point 
  outwards 
  as 
  two 
  

   very 
  small 
  dark 
  prominences. 
  The 
  posterior 
  spiracles, 
  which 
  are 
  dis- 
  

   tinctly 
  visible 
  in 
  the 
  extreme 
  end 
  of 
  the 
  anal 
  segment, 
  are 
  followed 
  

   anteriorly 
  by 
  two 
  reddish-brown 
  spots. 
  Two 
  irregularly-shaped 
  but 
  

   symmetrical 
  white 
  lateral 
  patches 
  on 
  fourth, 
  fifth, 
  sixth, 
  seventh 
  and 
  

   eighth 
  segments 
  and 
  two 
  somewhat 
  transparent 
  circular 
  spots 
  symmetri- 
  

   cally 
  placed 
  on 
  two 
  sides 
  of 
  the 
  sixth 
  segment. 
  The 
  pupal 
  period 
  is 
  

   from 
  9 
  to 
  11 
  days. 
  

  

  The 
  fly 
  emerges 
  through 
  a 
  slit 
  on 
  the 
  dorsal 
  surface 
  near 
  the 
  apex. 
  

  

  The 
  bulging 
  scutellum 
  of 
  the 
  freshly- 
  emerged 
  fly 
  is 
  at 
  first 
  some- 
  

   what 
  transparent, 
  very 
  soft 
  and 
  colourless 
  but 
  it 
  gradually 
  develops 
  

   colour 
  and 
  hardens. 
  

  

  