﻿OF 
  COCCIDAE 
  FROM 
  NORTHERN 
  AUSTRALIA. 
  

  

  233 
  

  

  MytilaspiS 
  CitriCOla, 
  Packard. 
  

  

  " 
  On 
  lime 
  trees 
  (Citrus 
  acida) 
  ; 
  Botanic 
  Gardens, 
  Darwin, 
  N. 
  T., 
  12. 
  ii. 
  1913." 
  

  

  The 
  leaves 
  submitted 
  are 
  thickly 
  covered 
  on 
  their 
  upper 
  surface 
  with 
  the 
  mingled 
  

   puparia 
  of 
  this 
  species 
  and 
  M. 
  pallida. 
  These 
  samples 
  show 
  no 
  signs 
  of 
  parasitisation. 
  

  

  Mytilaspis 
  pallida, 
  Green. 
  

  

  " 
  On 
  lime 
  trees 
  (Citrus 
  acida) 
  ; 
  Botanic 
  Gardens, 
  Darwin, 
  N. 
  T. 
  } 
  12. 
  ii. 
  1913." 
  

  

  Intimately 
  associated 
  with 
  M. 
  citricola 
  (as 
  noticed 
  above). 
  

  

  This 
  species 
  differs 
  from 
  citricola 
  in 
  the 
  very 
  narrow 
  parallel-sided 
  puparium 
  of 
  

   the 
  female. 
  It 
  may 
  be 
  readily 
  distinguished 
  from 
  gloveri 
  (which 
  it 
  otherwise 
  closely 
  

   resembles) 
  by 
  its 
  pale 
  ochreous 
  colour, 
  the 
  puparium 
  of 
  gloveri 
  being 
  deep 
  reddish 
  

   brown. 
  

  

  Parlatoria 
  ziziphus, 
  Lucas. 
  

  

  " 
  On 
  lime 
  tree 
  (Citrus 
  acida) 
  ; 
  Darwin, 
  N. 
  T., 
  20. 
  iv. 
  1913." 
  

  

  The 
  insects 
  are 
  massed 
  on 
  both 
  surfaces 
  of 
  the 
  leaves 
  to 
  an 
  extent 
  that 
  must 
  have 
  

   been 
  most 
  deleterious 
  to 
  the 
  health 
  of 
  the 
  plant. 
  

  

  Lecanium 
  (Saissetia) 
  hemisphaericum, 
  Targ. 
  

  

  " 
  On 
  undetermined 
  shrubs 
  and 
  weeds; 
  Botanic 
  Gardens, 
  Darwin, 
  N.T., 
  10. 
  x. 
  1913." 
  

  

  Lecanium 
  pseudexpansum, 
  sp. 
  nov. 
  

   Adult 
  female 
  (fig. 
  2, 
  b) 
  broad 
  and 
  flat 
  ; 
  broadly 
  oval, 
  often 
  of 
  very 
  irregular 
  outline. 
  

  

  Fig. 
  2. 
  Lecanium 
  pseudexpansum, 
  sp. 
  nov. 
  ; 
  b, 
  adult 
  female, 
  x 
  9; 
  c-/, 
  various 
  forms 
  

  

  of 
  antennae, 
  x 
  600. 
  

  

  Colour 
  pale 
  fulvous 
  or 
  ochreous 
  ; 
  often 
  marbled 
  with 
  dark 
  brown, 
  and 
  usually 
  with 
  

   a 
  submarginal 
  narrow 
  dark 
  brown 
  zone. 
  Surface 
  (under 
  magnification) 
  minutely 
  

   pustulate 
  ; 
  appearing 
  smooth 
  and 
  shining 
  to 
  the 
  naked 
  eye, 
  but 
  with 
  indications 
  of 
  

  

  