﻿Maskell. 
  — 
  On 
  some 
  Coccidffi 
  in 
  New 
  Zealand. 
  209 
  

  

  The 
  young, 
  ou 
  leaving 
  the 
  parent, 
  resembles 
  that 
  of 
  Lecanium 
  hesperi- 
  

   dum 
  ; 
  in 
  fact 
  I 
  can 
  see 
  no 
  difference 
  except 
  that 
  perhaps 
  one 
  of 
  the 
  hau's 
  on 
  

   the 
  last 
  joint 
  of 
  the 
  antenn£e 
  is 
  longer 
  in 
  this 
  species. 
  The 
  antenna 
  has 
  

   six 
  joints, 
  on 
  the 
  last 
  of 
  which 
  are 
  eight 
  fine 
  hau-s. 
  

  

  In 
  its 
  next 
  stage 
  the 
  female 
  insect 
  is 
  extremely 
  thin, 
  appearing 
  on 
  the 
  

   leaf 
  like 
  a 
  translucent 
  blueish 
  film 
  ; 
  so 
  thin 
  indeed 
  that 
  some 
  care 
  is 
  

   necessary 
  to 
  detach 
  it 
  unbroken 
  from 
  the 
  plant. 
  Sometimes 
  so 
  many 
  of 
  

   these 
  films 
  are 
  seen 
  together 
  as 
  to 
  give 
  quite 
  a 
  slimy 
  appearance 
  to 
  the 
  

   under 
  side 
  of 
  the 
  leaf. 
  Plate 
  VII, 
  fig. 
  13a, 
  shows 
  the 
  appearance 
  of 
  the 
  

   insect 
  at 
  this 
  stage. 
  The 
  toothed 
  fringe 
  is 
  here 
  seen 
  as 
  closely 
  attached 
  to 
  

   the 
  body 
  ; 
  it 
  is 
  very 
  difficult, 
  if 
  not 
  impossible, 
  to 
  detach 
  it 
  mechanically 
  at 
  

   this 
  stage. 
  Upon 
  immersion, 
  however, 
  in 
  turpentine 
  or 
  spirits 
  of 
  wine 
  and 
  

   then 
  in 
  Canada 
  balsam 
  the 
  test 
  seems 
  to 
  become 
  dissolved, 
  and 
  with 
  it 
  dis- 
  

   appears 
  the 
  fringe, 
  leaving 
  the 
  insect 
  as 
  shown 
  in 
  fig. 
  136. 
  

  

  It 
  will 
  be 
  seen 
  that 
  the 
  outline 
  of 
  the 
  body 
  is 
  elliptical, 
  but 
  instead 
  of 
  

   presenting 
  a 
  regular 
  curve 
  as 
  in 
  Lecanium 
  hesjMridum 
  the 
  edge 
  shows 
  a 
  

   number 
  of 
  re-entering 
  curves, 
  giving 
  a 
  wavy 
  appearance. 
  This 
  peculiarity 
  

   is 
  noticeable 
  to 
  a 
  greater 
  or 
  less 
  extent 
  in 
  aU 
  the 
  species 
  of 
  the 
  present 
  sub- 
  

   division 
  which 
  I 
  have 
  observed 
  ; 
  and 
  I 
  am 
  somewhat 
  inclined 
  to 
  think 
  that 
  

   it 
  might 
  be 
  taken 
  as 
  a 
  distinguishing 
  characteristic 
  of 
  the 
  New 
  Zealand 
  

   Lecanio-diaspidce. 
  

  

  The 
  rostrum 
  and 
  mentum 
  are 
  of 
  the 
  usual 
  kind. 
  The 
  antennae 
  have 
  

   seven 
  joints 
  (fig. 
  13c) 
  ; 
  the 
  thh'd 
  much 
  the 
  longest, 
  the 
  two 
  first 
  short 
  and 
  

   broad, 
  the 
  fourth 
  rather 
  less 
  than 
  the 
  fifth 
  which 
  is 
  again 
  rather 
  less 
  than 
  

   the 
  sixth, 
  the 
  sixth 
  about 
  equal 
  to 
  the 
  seventh 
  which 
  has 
  a 
  few 
  long 
  hairs. 
  

   The 
  legs 
  have 
  the 
  coxae 
  very 
  thick, 
  the 
  femora 
  thick 
  and 
  not 
  very 
  long, 
  the 
  

   tibiffi 
  and 
  tarsi 
  narrow 
  and 
  of 
  about 
  equal 
  length. 
  The 
  claw 
  (fig. 
  IM) 
  has 
  

   the 
  upper 
  digitules 
  very 
  long, 
  with 
  a 
  minute 
  knob, 
  the 
  lower 
  pair 
  shorter, 
  

   and 
  not 
  nearly 
  as 
  broad 
  as 
  in 
  Lecanium 
  hesperidum. 
  The 
  abdominal 
  lobes 
  

   are 
  as 
  usual, 
  and 
  the 
  anal 
  ring 
  has 
  six 
  or 
  eight 
  long 
  hairs. 
  

  

  Opposite 
  the 
  stigmata 
  are 
  spines, 
  as 
  in 
  all 
  Lecanidae, 
  and 
  several 
  short 
  

   hairs 
  are 
  placed 
  aU 
  round 
  the 
  edge. 
  

  

  The 
  eyes 
  appear 
  as 
  small 
  red 
  granular 
  spots 
  placed 
  in 
  front 
  of 
  the 
  

   antennae. 
  

  

  It 
  is 
  not 
  until 
  the 
  female 
  insect 
  has 
  entered 
  upon 
  a 
  later 
  stage 
  that 
  the 
  

   character 
  of 
  the 
  test 
  or 
  carapace 
  can 
  be 
  made 
  out. 
  An 
  insect 
  taken 
  towards 
  

   the 
  end 
  of 
  summer, 
  say 
  in 
  February, 
  can 
  be 
  easily 
  detached 
  from 
  its 
  test 
  ; 
  

   and 
  in 
  the 
  autumn 
  and 
  winter 
  a 
  large 
  number 
  of 
  tests, 
  empty, 
  may 
  be 
  

   seen 
  on 
  the 
  leaves. 
  The 
  female 
  herself 
  does 
  not, 
  I 
  think, 
  undergo 
  a 
  change, 
  

   except 
  that 
  she 
  has 
  increased 
  in 
  size 
  and 
  thickness 
  and 
  is 
  full 
  of 
  eggs. 
  She 
  

   appears 
  circular 
  in 
  outline, 
  somewhat 
  convex, 
  with 
  an 
  average 
  diameter 
  of 
  

  

  