﻿202 
  

  

  ROBERT 
  NEWSTEAD. 
  

  

  The 
  deeply 
  divided 
  duplex 
  lobes 
  give 
  the 
  margin 
  of 
  the 
  pygidium 
  a 
  strikingly 
  

   characteristic 
  appearance. 
  In 
  its 
  general 
  facies 
  the 
  female 
  resembles 
  that 
  of 
  

   Chionaspis 
  herbae, 
  Green 
  ;* 
  but 
  the 
  latter 
  has 
  only 
  three 
  pairs 
  of 
  lobes, 
  whereas 
  

   C. 
  madiunensis 
  has 
  four. 
  There 
  are 
  also 
  other 
  slight 
  differences, 
  notably 
  the 
  large 
  

   number 
  of 
  chitinised 
  patches 
  on 
  the 
  thorax. 
  

  

  I 
  tender 
  my 
  sincere 
  thanks 
  to 
  Mr. 
  E. 
  Ernest 
  Green 
  for 
  the 
  determination 
  of 
  this 
  

   species, 
  and 
  also 
  for 
  comparing 
  it 
  with 
  examples 
  of 
  his 
  C. 
  herbae. 
  The 
  latter 
  I 
  had 
  

   not 
  seen. 
  

  

  Chionaspis 
  tenuidisculus, 
  sp. 
  nov. 
  

  

  Female 
  Puparium. 
  Form 
  somewhat 
  oblong, 
  sides 
  almost 
  parallel; 
  highly 
  convex, 
  

   the 
  convexity 
  commencing 
  abruptly 
  near 
  the 
  middle 
  region 
  of 
  the 
  second 
  exuviae. 
  

   Larval 
  exuviae 
  nude, 
  orange-yellow 
  to 
  golden 
  yellow. 
  Second 
  exuviae 
  bright 
  orange- 
  

   yellow 
  ; 
  secretionary 
  covering 
  thin, 
  semitranslucent, 
  white. 
  Secretionary 
  portion 
  

   pure 
  white, 
  slightly 
  polished 
  and 
  very 
  strongly 
  laminate. 
  Length, 
  1*4-1 
  '7. 
  

  

  A3v-^ 
  

  

  Fig. 
  

  

  Chionaspis 
  tenuidisculus, 
  Newst. 
  

   a, 
  pygidium 
  ; 
  b, 
  margin 
  of 
  do. 
  

  

  Female, 
  adult. 
  Dead 
  examples 
  dull 
  yellow 
  to 
  red-brown 
  ; 
  cuticle 
  rather 
  strongly 
  

   chitinised 
  ; 
  general 
  form 
  fairly 
  well 
  preserved 
  ; 
  segmentation 
  distinct 
  ; 
  margin 
  folded 
  

   inwards 
  towards 
  the 
  venter, 
  traces 
  of 
  these 
  folds 
  also 
  visible 
  in 
  the 
  specimens 
  after 
  

   maceration 
  in 
  KOH. 
  Form 
  elongate, 
  much 
  narrowed 
  and 
  produced 
  anteriorly. 
  

   Eudimentary 
  antennae 
  rather 
  widely 
  separated 
  ; 
  tubercle 
  with 
  one 
  blunt 
  spiny 
  

   process, 
  and 
  a 
  long 
  and 
  unusually 
  stout 
  spine. 
  Anterior 
  stigmata 
  in 
  a 
  deep 
  horn- 
  

   shaped 
  cavity 
  ; 
  with 
  from 
  one 
  to 
  three 
  gland-pores. 
  Pygidium 
  (fig. 
  23, 
  a) 
  broadly 
  

   rounded 
  ; 
  median 
  area 
  with 
  several 
  large 
  clear 
  and 
  more 
  or 
  less 
  oval 
  spaces 
  or 
  vacuoles, 
  

   somewhat 
  irregularly 
  disposed. 
  Anal 
  orifice 
  near 
  the 
  articulation 
  of 
  the 
  abdominal 
  

   segment. 
  Gland-pores 
  large 
  and 
  rather 
  heavily 
  chitinised. 
  Margin 
  (fig. 
  23, 
  b) 
  with 
  

   two 
  pairs 
  of 
  lobes 
  ; 
  median 
  pair 
  relatively 
  broad 
  and 
  serrated 
  ; 
  second 
  pair 
  duplex, 
  

   the 
  upper 
  lobule 
  very 
  small 
  and 
  generally 
  notched 
  on 
  both 
  sides. 
  Squamae 
  simple 
  

   and 
  somewhat 
  slender. 
  Spines 
  minute. 
  Integument 
  rather 
  strongly 
  but 
  finely 
  

   reticulated. 
  

  

  *Coccidae 
  of 
  Ceylon, 
  p. 
  132. 
  

  

  