﻿Maskell. 
  — 
  On 
  some 
  Coccidse 
  in 
  New 
  Zealand. 
  203 
  

  

  was 
  oval 
  ; 
  the 
  adult 
  female, 
  somewhat 
  resembling 
  Mytilasfis 
  pomorum, 
  was 
  

   dark 
  yelloAv 
  in 
  colour, 
  irregular 
  in 
  shape, 
  having 
  three 
  prominent 
  lobes 
  on 
  

   each 
  side. 
  The 
  male 
  puparium 
  was 
  oval; 
  the 
  enclosed 
  pupa 
  was 
  not 
  to 
  be 
  

   clearly 
  made 
  out, 
  but 
  seemed 
  to 
  resemble 
  Diaspis 
  gigas. 
  

  

  The 
  above 
  include 
  all 
  the 
  species 
  of 
  Diaspid^ 
  which 
  I 
  have 
  as 
  yet 
  

   observed. 
  There 
  are 
  doubtless 
  many 
  more 
  in 
  the 
  country, 
  and 
  I 
  hope 
  at 
  

   some 
  future 
  time 
  to 
  be 
  able 
  to 
  procure 
  new 
  specimens. 
  Meanwhile 
  I 
  shall 
  

   go 
  on 
  to 
  the 
  next 
  family 
  of 
  scale 
  insects, 
  the 
  LecanidaB. 
  

  

  Since 
  writing 
  the 
  above 
  I 
  have 
  found 
  three 
  other 
  Diaspidse, 
  which 
  may 
  

   be 
  new 
  species, 
  but 
  which 
  I 
  have 
  not 
  had 
  time 
  to 
  thoroughly 
  examine. 
  

  

  The 
  first, 
  a 
  Mytilaspis, 
  is 
  found 
  on 
  a 
  small 
  Leucopogon 
  growing 
  on 
  dry 
  

   soil 
  in 
  the 
  hills. 
  It 
  is 
  yellowish, 
  with 
  a 
  puparium 
  somewhat 
  pear-shaped, 
  

   quite 
  white, 
  and 
  rather 
  tough. 
  It 
  is 
  very 
  minute, 
  averaging 
  only 
  about 
  ^^ 
  

   inch 
  in 
  length. 
  The 
  puparium 
  of 
  the 
  male 
  seems 
  to 
  be 
  narrower, 
  if 
  the 
  

   specimens 
  I 
  have 
  looked 
  at 
  are 
  the 
  cocoons 
  of 
  males. 
  The 
  abdominal 
  

   region 
  of 
  the 
  female 
  has 
  a 
  pygidium 
  with 
  eight 
  groups 
  of 
  spinnerets 
  ; 
  the 
  

   lower 
  groups 
  have 
  from 
  twenty 
  to 
  thirty 
  openings 
  in 
  each, 
  the 
  upper 
  only 
  

   from 
  four 
  to 
  six. 
  There 
  are 
  a 
  great 
  number 
  of 
  cylindrical 
  protruding 
  

   tubes. 
  The 
  abdomen 
  ends 
  with 
  six 
  spines. 
  The 
  lobes 
  are 
  inconspicuous, 
  

   with 
  a 
  medial 
  depression. 
  

  

  Another 
  Mytilaspis, 
  found 
  on 
  a 
  very 
  small 
  Mesemhryanthemum 
  growing 
  

   moss-like 
  in 
  our 
  river-beds, 
  appears 
  to 
  differ 
  from 
  the 
  last 
  only 
  in 
  its 
  colour, 
  

   which 
  is 
  dull 
  red. 
  I 
  am 
  not 
  sure 
  how 
  far 
  mere 
  colour 
  may 
  be 
  taken 
  as 
  

   constituting 
  a 
  specific 
  difference. 
  

  

  The 
  third 
  insect, 
  growing 
  on 
  the 
  Wild 
  Irishman 
  (Discaria 
  totmiatou), 
  

   seems 
  to 
  me 
  a 
  species 
  of 
  Diaspis 
  ; 
  but 
  the 
  only 
  specimens 
  I 
  found 
  were 
  a 
  

   number 
  of 
  discarded 
  pellicles 
  of 
  the 
  female 
  mixed 
  up 
  in 
  a 
  mass 
  of 
  white 
  

   cottony 
  fibre 
  as 
  in 
  I)iasp)is 
  ros(s. 
  

  

  I 
  hope 
  shortly 
  to 
  be 
  able 
  to 
  identify 
  all 
  these 
  insects. 
  

  

  I 
  HAVE 
  now 
  to 
  pass 
  from 
  the 
  first 
  group 
  of 
  Scale 
  Insects 
  to 
  the 
  second 
  

   group, 
  the 
  Lecanidge. 
  In 
  investigating 
  this 
  group 
  it 
  will 
  be 
  necessary 
  first 
  

   of 
  all 
  to 
  divide 
  it 
  into 
  several 
  classes, 
  because 
  otherwise 
  it 
  will 
  be 
  impossible 
  

   to 
  avoid 
  confusion. 
  The 
  number 
  of 
  genera 
  and 
  species 
  of 
  the 
  Lecanidas 
  is 
  

   so 
  great, 
  the 
  plants 
  infested 
  by 
  them 
  are 
  so 
  various, 
  and 
  their 
  specific 
  

   differences 
  so 
  slight 
  in 
  many 
  instances, 
  that 
  it 
  is 
  easy, 
  I 
  should 
  say, 
  to 
  fall 
  

   into 
  errors 
  concerning 
  them, 
  I 
  have, 
  however, 
  no 
  intention 
  of 
  dwelling 
  at 
  

   length 
  upon 
  those 
  species 
  which, 
  although 
  attacking 
  plants 
  in 
  this 
  country 
  

   in 
  gardens 
  or 
  greenhouses, 
  are 
  European, 
  and 
  described 
  by 
  other 
  observers. 
  

   Of 
  these, 
  as 
  far 
  as 
  my 
  experience 
  goes, 
  we 
  have 
  in 
  New 
  Zealand 
  several 
  ; 
  

   but, 
  with 
  one 
  exception, 
  which 
  I 
  take 
  as 
  the 
  type 
  of 
  the 
  group, 
  I 
  shall 
  pass 
  

   lightly 
  over 
  them 
  and 
  go 
  on 
  to 
  the 
  genera 
  and 
  species 
  which 
  I 
  beheve 
  to 
  be 
  

   new 
  and 
  indigenous. 
  

  

  