﻿OBSERVATIONS 
  ON 
  SCALE- 
  INSECTS. 
  

  

  193 
  

  

  Female, 
  young 
  adult. 
  Pale 
  brown 
  to 
  dull 
  castaneous. 
  Dorsum 
  flat 
  and 
  covered 
  

   with 
  a 
  dirty 
  white, 
  glassy 
  test, 
  consisting 
  of 
  minute 
  plates, 
  which 
  collectively 
  present 
  

   a 
  faintly 
  imbricated 
  appearance. 
  The 
  test 
  is 
  easily 
  deciduous, 
  and 
  when 
  removed 
  

   the 
  integument 
  presents 
  a 
  polished 
  appearance. 
  Antennae 
  (fig. 
  15, 
  b,b) 
  of 
  eight 
  seg- 
  

   ments, 
  of 
  which 
  the 
  4th, 
  5th 
  and 
  8th 
  are 
  the 
  longest 
  ; 
  formula 
  : 
  (4, 
  5, 
  8) 
  3, 
  2, 
  (6, 
  7) 
  

   1 
  or 
  5 
  (4, 
  8, 
  ) 
  3 
  (2, 
  6, 
  7) 
  1 
  ; 
  terminal 
  hair 
  of 
  great 
  length. 
  Legs 
  relatively 
  slender 
  ; 
  

   tarsus 
  of 
  anterior 
  pair 
  (fig. 
  15, 
  c) 
  with 
  a 
  well 
  defined 
  constriction 
  ; 
  coxa 
  and 
  trochanter 
  

   each 
  with 
  a 
  very 
  long 
  hair. 
  Stigma 
  tic 
  clefts 
  obsolete 
  ; 
  spines 
  (fig. 
  15, 
  d,d) 
  three, 
  the 
  

   central 
  one 
  equal 
  in 
  length 
  to 
  the 
  4th 
  and 
  8th 
  segments 
  of 
  the 
  antennae 
  ; 
  lateral 
  

   spines 
  pointed 
  and 
  about 
  one-fourth 
  the 
  length 
  of 
  the 
  central 
  one. 
  Marginal 
  spines 
  

   (fig. 
  15, 
  d) 
  slightly 
  shorter 
  and 
  stouter 
  than 
  the 
  lateral 
  stigma 
  tic 
  spines 
  ; 
  they 
  are 
  

  

  Fig. 
  15. 
  Platysaissetia 
  montrichardiae, 
  Newst., 
  sp. 
  n., 
  $ 
  ; 
  

   a, 
  dermal 
  pores 
  and 
  " 
  cells." 
  Young 
  adult 
  $ 
  ; 
  b, 
  b, 
  antennae 
  ; 
  

   c, 
  leg 
  ; 
  d, 
  d, 
  stigmatic 
  spines 
  ; 
  e, 
  post 
  anal 
  gland- 
  pores 
  ; 
  /, 
  leg 
  

  

  of 
  larva. 
  

  

  separated 
  by 
  a 
  distance 
  equal 
  to 
  three 
  or 
  four 
  times 
  their 
  length. 
  Dermal 
  gland- 
  

   pores 
  irregularly 
  ovate, 
  large, 
  placed 
  close 
  together, 
  and 
  most 
  conspicuous 
  towards 
  

   the 
  margin. 
  Anal 
  lobes 
  with 
  the 
  outer 
  margin 
  strongly 
  arched 
  ; 
  and 
  surrounded 
  

   by 
  a 
  narrow 
  wall 
  of 
  dense 
  chitin. 
  Anal 
  cleft 
  fused 
  ; 
  from 
  one-fifth 
  to 
  one-sixth 
  

   the 
  length 
  of 
  the 
  body. 
  Postanal 
  glandular 
  pores 
  (fig. 
  15, 
  e) 
  relatively 
  large 
  and 
  

   circular, 
  forming 
  a 
  broad 
  scattered 
  group 
  extending 
  as 
  far 
  forward 
  as 
  the 
  mentum. 
  

   Length, 
  2'6-3'3 
  mm. 
  

  

  Female, 
  second 
  stage. 
  Differs 
  from 
  the 
  adult 
  chiefly 
  in 
  the 
  following 
  details 
  : 
  

   Antennae 
  of 
  six 
  segments, 
  of 
  which 
  the 
  third 
  is 
  much 
  the 
  longest. 
  Postanal 
  gland- 
  

   pores 
  absent 
  ; 
  postanal 
  bristles 
  in 
  three 
  pairs. 
  Length, 
  0*7-0'8 
  mm. 
  

   (C605) 
  h2 
  

  

  