﻿PROCEEDINGS 
  OF 
  THE 
  FOURTH 
  ENTOMOLOGICAL 
  MEETING 
  289 
  

  

  vary 
  in 
  size 
  considerably. 
  The 
  dimensions 
  in 
  millimetres 
  are 
  given 
  

   below 
  : 
  — 
  

  

  Length 
  . 
  , 
  . 
  2-76 
  2-105 
  1-841 
  1-40 
  1-315 
  

  

  Breadth 
  ... 
  '66 
  -605 
  -605 
  -45 
  -526 
  

  

  The 
  bigger 
  larvae 
  in 
  two 
  cases 
  were 
  reared 
  to 
  female 
  adults 
  and 
  

   one 
  smaller 
  larva 
  to 
  a 
  male 
  adult. 
  Of 
  the 
  rest 
  no 
  record 
  was 
  kept. 
  

   There 
  is 
  generally 
  some 
  difference 
  in 
  size 
  of 
  males 
  and 
  females 
  

   of 
  the 
  same 
  species 
  and 
  conseqiiently 
  in 
  their 
  respective 
  larvae 
  also 
  ; 
  

   but 
  amongst 
  the 
  Hymenoptera 
  sometimes 
  the 
  individuals 
  of 
  the 
  same 
  

   sex 
  are 
  also 
  noticed 
  to 
  vary 
  in 
  size. 
  This 
  has 
  been 
  ascertained 
  to 
  depend 
  

   on 
  the 
  amount 
  of 
  the 
  nourishment 
  received 
  during 
  the 
  larval 
  stage. 
  

   In 
  the 
  case 
  of 
  this 
  species 
  one 
  female 
  pupa 
  was 
  found 
  to 
  measure 
  1*84 
  

   mm. 
  long 
  and 
  0-21 
  mm. 
  broad, 
  while 
  the 
  normal 
  size 
  of 
  a 
  female 
  pupa 
  

   is 
  4 
  mm. 
  by 
  1 
  mm. 
  

  

  A 
  full 
  grown 
  larva 
  which 
  had 
  passed 
  out 
  excreta 
  and 
  entered 
  on 
  

   the 
  quiescent 
  stage 
  before 
  pupating 
  looked 
  almost 
  pale 
  white, 
  a 
  very 
  

   slight 
  yellowish 
  tinge 
  appearing 
  on 
  the 
  central 
  segment 
  only. 
  A 
  pair 
  

   of 
  tubercular 
  processes 
  on 
  the 
  forehead, 
  each 
  ending 
  in 
  a 
  point, 
  probably 
  

   represent 
  the 
  antennae. 
  The 
  body 
  tapers 
  both 
  ways, 
  but 
  the 
  head 
  

   end 
  is 
  broader 
  than 
  the 
  tail 
  end. 
  The 
  segments 
  of 
  the 
  body 
  become 
  

   quite 
  indistinct. 
  

  

  A 
  female 
  pupa 
  is 
  4 
  mm. 
  long 
  by 
  1 
  mm. 
  broad. 
  The 
  head 
  and 
  thorax 
  

   together 
  are 
  only 
  about 
  two-thirds 
  as 
  long 
  as 
  the 
  abdomen. 
  The 
  

   abdominal 
  segments 
  are 
  not 
  very 
  distinctly 
  marked, 
  and 
  the 
  whole 
  of 
  

   the 
  abdomen 
  tapers 
  regularly 
  towards 
  the 
  tail 
  end 
  almost 
  to 
  a 
  point. 
  

   The 
  antennae, 
  mouthparts, 
  and 
  legs 
  are 
  all 
  folded 
  symmetrically 
  on 
  

   the 
  ventral 
  side. 
  The 
  head 
  is 
  not 
  so 
  broad 
  as 
  the 
  thorax 
  which 
  is 
  the 
  

   widest 
  portion 
  : 
  the 
  thoracic 
  segments 
  are 
  distinct 
  dorsally. 
  

  

  The 
  male 
  pupa 
  is 
  much 
  smaller 
  than 
  the 
  female 
  pupa 
  ; 
  its 
  length 
  is 
  

   2'5 
  mm. 
  only. 
  The 
  abdomen 
  is 
  longer 
  than 
  the 
  head 
  and 
  thorax 
  to- 
  

   gether 
  but 
  not 
  so 
  long 
  as 
  in 
  the 
  case 
  of 
  the 
  female 
  pupa 
  ; 
  the 
  rest 
  similar. 
  

  

  Nearly 
  six 
  hours 
  after 
  pupation 
  the 
  head, 
  thorax, 
  and 
  the 
  wing 
  

   pads 
  of 
  the 
  pupa 
  become 
  fuscous, 
  and 
  the 
  colour 
  deepens 
  from 
  day 
  to 
  

   day. 
  On 
  the 
  fourth 
  day 
  the 
  sutures 
  bounding 
  the 
  mesonotum 
  and 
  the 
  

   scutellum 
  become 
  quite 
  distinct. 
  The 
  whole 
  of 
  the 
  mesonotum 
  turns 
  

   black 
  leaving 
  only 
  a 
  longitudinal 
  whitish 
  line 
  along 
  the 
  middle. 
  On 
  

   the 
  fifth 
  day 
  the 
  whole 
  pupa 
  is 
  black 
  and 
  on 
  the 
  sixth 
  day 
  a 
  greenish 
  

   metallic 
  tinge 
  is 
  also 
  observable 
  pervading 
  the 
  entire 
  pupa. 
  On 
  the 
  

   seventh 
  day 
  the 
  thin 
  pellicle 
  covering 
  the 
  pupa 
  is 
  cast 
  off 
  and 
  the 
  adult 
  

   parasite 
  emerges. 
  The 
  empty 
  pupal 
  skin, 
  which 
  is 
  left 
  behind 
  in 
  the 
  

   leaf 
  fold, 
  is 
  of 
  a 
  dirty 
  black 
  colour. 
  

  

  