﻿Maskell. 
  — 
  On 
  a 
  Parasite 
  of 
  Coccidse. 
  229 
  

  

  which 
  was 
  frequently 
  seen 
  under 
  the 
  centre 
  of 
  the 
  tests. 
  This 
  object, 
  Avhich 
  

   is 
  shown 
  in 
  the 
  accompanying 
  plate, 
  fig. 
  1, 
  I 
  took 
  to 
  be 
  the 
  pupa 
  of 
  the 
  male 
  

   CtenocJdton, 
  

  

  Later 
  on, 
  in 
  September, 
  I 
  found 
  other 
  pup^ 
  in 
  a 
  more 
  advanced 
  stage, 
  

   for 
  I 
  was 
  able 
  to 
  detach 
  them 
  easily 
  from 
  the 
  test 
  of 
  the 
  scale. 
  They 
  now 
  

   resembled 
  the 
  pupae 
  of 
  EulopJms 
  nemati, 
  a 
  common 
  Hymenopterous 
  insect. 
  

   One 
  of 
  them 
  is 
  shown 
  in 
  my 
  fig. 
  2, 
  where 
  it 
  will 
  be 
  seen 
  that 
  the 
  form 
  of 
  

   the 
  head, 
  with 
  its 
  bars 
  or 
  stripes, 
  and 
  the 
  spurs 
  on 
  the 
  end 
  of 
  the 
  tibi®, 
  

   seem 
  to 
  refer 
  the 
  insect 
  to 
  the 
  genera 
  Eulojjhus 
  or 
  Eneyrtus. 
  In 
  Eulophiis, 
  

   indeed, 
  the 
  antennae 
  are 
  branched, 
  but 
  this 
  could 
  not 
  be 
  distinguished 
  in 
  

   the 
  pupa 
  stage. 
  

  

  In 
  October, 
  when 
  searching 
  for 
  more 
  specimens 
  of 
  Ctenochiton 
  in 
  order 
  

   further 
  to 
  examine 
  these 
  pupaB, 
  I 
  came 
  across 
  a 
  tree, 
  one 
  of 
  the 
  species 
  of 
  

   Olearia, 
  on 
  which 
  I 
  found 
  numbers 
  of 
  them 
  in 
  another 
  condition. 
  The 
  leaves 
  

   of 
  the 
  tree 
  had 
  evidently 
  been 
  pierced 
  by 
  a 
  leaf-mining 
  insect, 
  and 
  were 
  

   covered 
  with 
  the 
  blisters 
  formed 
  by 
  it. 
  Some 
  of 
  these 
  were 
  closed, 
  others 
  

   open 
  ; 
  in 
  each 
  of 
  the 
  closed 
  ones 
  I 
  found 
  the 
  remains 
  of 
  the 
  larva 
  of 
  the 
  

   leaf-miner 
  and 
  the 
  pupa 
  of 
  which 
  I 
  was 
  in 
  search. 
  It 
  was 
  quite 
  evident 
  

   that 
  it 
  could 
  not 
  be 
  the 
  pupa 
  of 
  a 
  male 
  Ctenochiton. 
  The 
  blisters, 
  I 
  may 
  

   mention, 
  were 
  on 
  both 
  sides 
  of 
  the 
  leaves 
  ; 
  but 
  the 
  orifice 
  by 
  which 
  the 
  

   msect 
  escaped 
  was 
  always 
  on 
  the 
  under 
  side. 
  

  

  I 
  was 
  able 
  to 
  procure 
  several 
  specimens 
  of 
  this 
  parasitic 
  insect 
  in 
  the 
  

   imago 
  state. 
  

  

  According 
  to 
  Westwood, 
  there 
  are 
  five 
  families 
  of 
  parasitic 
  Hymenoptera 
  ; 
  

   but 
  only 
  one 
  has 
  all 
  the 
  characters 
  of 
  the 
  insect 
  I 
  am 
  describing. 
  In 
  the 
  

   Evaniidffi 
  the 
  antennse 
  are 
  straight 
  and 
  the 
  wings 
  are 
  veined 
  ; 
  in 
  the 
  

   IchneumonidsB 
  the 
  same 
  ; 
  in 
  the 
  Chalcididge 
  the 
  pupa 
  is 
  naked 
  ; 
  in 
  the 
  

   Chrysididse 
  the 
  abdomen 
  is 
  oblong-ovate. 
  There 
  remains 
  only 
  the 
  Procto- 
  

   trupidse, 
  and 
  to 
  these 
  I 
  relegate 
  my 
  insect. 
  Of 
  the 
  genera 
  of 
  this 
  family 
  

   Diapria 
  approaches 
  it 
  most, 
  by 
  the 
  form 
  of 
  the 
  wings. 
  The 
  only 
  other 
  

   genus 
  resembling 
  it 
  seems 
  to 
  be 
  Platygaster 
  ; 
  but, 
  according 
  to 
  Westwood, 
  

   the 
  legs 
  in 
  this 
  genus 
  are 
  "not 
  saltatorial," 
  whereas 
  the 
  fly 
  before 
  me 
  

   can 
  leap 
  pretty 
  actively. 
  I 
  may 
  observe 
  that 
  Westwood 
  states 
  that 
  the 
  

   CoccidaB 
  are 
  much 
  infested 
  by 
  Chalcidideous 
  parasites, 
  of 
  a 
  genus 
  to 
  which 
  

   he 
  gives 
  the 
  name 
  " 
  Coccojjhagus," 
  and 
  which, 
  he 
  says, 
  is 
  intermediate 
  

   between 
  Eneyrtus 
  and 
  Eulophus. 
  My 
  insect 
  cannot 
  be 
  this, 
  for 
  the 
  antenna 
  

   have 
  at 
  least 
  12 
  joints, 
  against 
  8 
  in 
  Coccophagus, 
  and 
  the 
  three 
  terminal 
  

   joints, 
  although 
  soldered 
  together, 
  do 
  not 
  form 
  a 
  club. 
  Again, 
  it 
  cannot 
  be 
  

   Eneyrtus, 
  for 
  there 
  is 
  no 
  dilation 
  of 
  the 
  tarsus 
  ; 
  nor 
  Eulophus, 
  for 
  the 
  

   antennae 
  are 
  not 
  branched. 
  And 
  the 
  thin 
  covering 
  of 
  the 
  pupa 
  prevents 
  it 
  

   from 
  entering 
  the 
  Chrysididse. 
  

  

  