﻿Maskell.— 
  On 
  some 
  CoccidsB 
  in 
  Neiu 
  Zealand. 
  211 
  

  

  as 
  long, 
  and 
  tapers 
  sliglitly 
  to 
  the 
  claw. 
  All 
  the 
  joints 
  are 
  hauy. 
  The 
  

   upper 
  digitules 
  are 
  not 
  long, 
  and 
  the 
  knobs 
  small 
  ; 
  the 
  lower 
  pair 
  are 
  only 
  

   hairs. 
  

  

  The 
  thoracic 
  baud 
  occupies 
  nearly 
  the 
  whole 
  width 
  ; 
  the 
  wings 
  are 
  

   broad 
  and 
  elliptical, 
  with 
  a 
  suigle 
  nervure 
  of 
  two 
  branches. 
  The 
  abdomen, 
  

   somewhat 
  long, 
  ends 
  in 
  a 
  single 
  spike 
  shorter 
  than 
  that 
  of 
  the 
  Diaspidfe. 
  

  

  This 
  species 
  is 
  very 
  much 
  infested 
  by 
  a 
  hymenopterous 
  parasite 
  which 
  

   takes 
  advantage 
  of 
  its 
  test 
  to 
  lay 
  therein 
  its 
  eggs. 
  A 
  very 
  large 
  num^ber 
  of 
  

   tests 
  will 
  be 
  found 
  to 
  contain, 
  not 
  their 
  proper 
  insects, 
  but 
  pupae 
  of 
  this 
  

   parasitic 
  fly 
  which 
  might 
  possibly 
  be 
  mistaken 
  for 
  males 
  of 
  Ctenoohiton, 
  I 
  

   have 
  been 
  able 
  to 
  follow 
  the 
  transformation 
  of 
  the 
  parasite, 
  which 
  appears 
  

   to 
  be 
  one 
  of 
  the 
  Proctotrupidge 
  and 
  which 
  I 
  have 
  described 
  in 
  a 
  short 
  paper 
  

   read 
  before 
  you 
  to-night.* 
  

  

  7. 
  GtenocMton 
  viridis, 
  sp. 
  nov. 
  

  

  The 
  differences 
  between 
  this 
  and 
  the 
  last 
  species 
  are 
  not, 
  I 
  think, 
  

   noticeable 
  in 
  the 
  earlier 
  stages, 
  except 
  that 
  the 
  insect 
  when 
  first 
  appearing 
  

   on 
  the 
  leaf 
  with 
  its 
  fringe 
  has 
  not 
  so 
  much 
  of 
  the 
  filmy 
  look 
  of 
  C. 
  verforatus, 
  

   but 
  is 
  yellower 
  and 
  somewhat 
  more 
  solid. 
  The 
  divergence 
  is 
  more 
  apparent 
  

   in 
  the 
  stage 
  of 
  propagation, 
  when 
  C. 
  viridis 
  attains 
  a 
  much 
  larger 
  size. 
  The 
  

   female 
  insect 
  has 
  then 
  a 
  bright 
  green 
  colour, 
  is 
  sometimes 
  ^-inch 
  long 
  

   and 
  l^-inch 
  wide 
  and 
  pear-shaped, 
  acuminate 
  at 
  the 
  cephalic 
  end. 
  It 
  

   has 
  a 
  repulsive 
  appearance 
  on 
  the 
  underside 
  of 
  the 
  leaf 
  where 
  it 
  forms 
  a 
  

   depression 
  corresponding 
  to 
  its 
  body. 
  I 
  have 
  found 
  it 
  abundant 
  on 
  Co- 
  

   prosma, 
  Panax, 
  and 
  Rubus, 
  near 
  Christchurch, 
  in 
  Eiccarton 
  Bush. 
  

  

  The 
  test, 
  in 
  the 
  earlier 
  stage, 
  resembles 
  that 
  of 
  C. 
  perforatus, 
  being 
  

   glassy, 
  with 
  a 
  fringe 
  of 
  broad 
  segments. 
  At 
  the 
  later 
  stage 
  the 
  fringe 
  

   disappears, 
  and 
  the 
  test, 
  instead 
  of 
  bemg 
  easily 
  removable 
  as 
  in 
  the 
  last 
  

   species, 
  becomes 
  intimately 
  attached 
  to 
  the 
  insect, 
  so 
  that 
  in 
  order 
  to 
  

   examine 
  it 
  one 
  has 
  to 
  tear 
  and 
  wash 
  away 
  the 
  body 
  and 
  internal 
  organs. 
  

   When 
  this 
  is 
  done 
  it 
  is 
  seen 
  that 
  the 
  rows 
  of 
  segments 
  are 
  more 
  numerous 
  

   than 
  in 
  C. 
  perforatus, 
  the 
  segments 
  themselves 
  smaller, 
  and 
  the 
  oval 
  mark- 
  

   ings 
  on 
  the 
  dividing 
  lines 
  in 
  double 
  rows. 
  Moreover, 
  each 
  segment 
  is 
  

   marked 
  by 
  radiating 
  straight 
  lines 
  crossed 
  by 
  wavy 
  curves, 
  giving 
  it 
  an 
  

   appearance 
  something 
  hke 
  the 
  scale 
  of 
  a 
  fish. 
  These 
  lines 
  are 
  not 
  clearly 
  

   to 
  be 
  made 
  out 
  after 
  immersion 
  in 
  a 
  fluid, 
  such 
  as 
  glycerine 
  or 
  Canada 
  

   balsam. 
  

  

  The 
  fringe 
  is 
  absent 
  at 
  this 
  stage, 
  and 
  there 
  is 
  no 
  sign 
  of 
  the 
  lines 
  of 
  

   perforations 
  characteristic 
  of 
  the 
  last 
  species. 
  

  

  The 
  appearance 
  of 
  a 
  segment 
  of 
  the 
  test 
  is 
  shown 
  in 
  plate 
  VII., 
  fig. 
  14&. 
  

  

  * 
  Vide 
  Art. 
  XVII. 
  

  

  