﻿206 
  ROBERT 
  NEWSTEAD. 
  

  

  the 
  width 
  of 
  the 
  first 
  free 
  abdominal 
  segment. 
  A 
  little 
  more 
  than 
  two-thirds 
  of 
  the 
  

   upper 
  portion 
  of 
  the 
  body 
  more 
  highly 
  chitinised 
  than 
  the 
  rest, 
  this 
  character 
  

   disappearing 
  after 
  long 
  maceration 
  in 
  KOH. 
  Rudimentary 
  antennae 
  (fig. 
  26, 
  6,6) 
  

   relatively 
  robust, 
  with 
  two 
  or 
  three 
  blunt 
  spiny 
  processes 
  and 
  a 
  pair 
  of 
  long 
  stout 
  

   hairs 
  ; 
  they 
  are 
  placed 
  midway 
  between 
  the 
  margin 
  and 
  the 
  rostrum. 
  Parastigmatic 
  

   glands 
  (3-4) 
  present 
  at 
  the 
  anterior 
  spiracles 
  only. 
  Pygidium 
  (fig. 
  26, 
  c) 
  broadly 
  

   rounded 
  ; 
  anal 
  orifice 
  placed 
  well 
  forward 
  and 
  just 
  in 
  advance 
  of 
  the 
  vaginal 
  orifice 
  ; 
  

   margin 
  with 
  a 
  very 
  large 
  pair 
  of 
  slightly 
  divergent 
  median 
  lobes, 
  with 
  the 
  outer 
  

   edges 
  finely 
  crenulated 
  and 
  longitudinally 
  striate 
  ; 
  squamae 
  simple 
  and 
  few 
  in 
  

   number. 
  Spines 
  minute. 
  No 
  circumgenital 
  glands. 
  

  

  Uganda 
  : 
  Bufumira 
  Isl., 
  Sesse 
  Islands, 
  Lake 
  Victoria, 
  on 
  an 
  unknown 
  tree 
  

   12.X.1918 
  {C. 
  C. 
  Gowdey). 
  

  

  The 
  large 
  divergent 
  lobes, 
  the 
  peculiar 
  form 
  of 
  the 
  antennae 
  and 
  the 
  semi- 
  

   chitinised 
  upper 
  portion 
  of 
  the 
  body 
  are 
  the 
  distinguishing 
  features 
  of 
  this 
  insect. 
  

  

  Chionaspis 
  laniger, 
  sp. 
  now 
  

  

  Female 
  puparium 
  (Plate 
  XVI, 
  fig. 
  2). 
  Somewhat 
  mytiliform, 
  but 
  very 
  highly 
  

   convex 
  ; 
  composed, 
  externally, 
  of 
  white 
  felted 
  woolly 
  material, 
  which 
  when 
  perfect 
  

   is 
  very 
  strongly 
  and 
  coarsely 
  laminated 
  transversely 
  ; 
  beneath 
  the 
  woolly 
  exterior 
  

   the 
  puparium 
  is 
  hard 
  and 
  shell-like 
  in 
  texture. 
  Ventral 
  scale 
  more 
  or 
  less 
  complete. 
  

   Exuviae 
  completely 
  covered 
  dorsally 
  with 
  dense 
  loose 
  woolly 
  filaments. 
  Larval 
  

   exuviae 
  dull 
  yellow 
  ; 
  second 
  exuviae 
  dull 
  yellow 
  to 
  pale 
  straw 
  colour. 
  Length, 
  

   taken 
  from 
  the 
  ventral 
  surface. 
  2-2*3 
  mm. 
  

  

  Female, 
  adult. 
  Somewhat 
  ovate 
  or 
  more 
  or 
  less 
  deltoid 
  ; 
  cephalo-thorax 
  narrowed 
  

   anteriorly. 
  Rudimentary 
  antennae 
  (fig. 
  27, 
  a, 
  a) 
  with 
  a 
  unilateral 
  spiny 
  projection 
  

   and 
  two 
  long 
  stout 
  spines, 
  one 
  or 
  both 
  of 
  which 
  may 
  be 
  curved. 
  Parastigmatic 
  

   glands 
  to 
  both 
  pairs 
  of 
  stigmata 
  : 
  the 
  anterior 
  pair 
  with 
  about 
  ten 
  ; 
  the 
  posterior 
  

   pair 
  with 
  four 
  or 
  five. 
  Dorsal 
  gland-pores 
  on 
  all 
  the 
  segments 
  below 
  the 
  lower 
  

   pair 
  of 
  stigmata. 
  Pygidium 
  (fig. 
  27, 
  6) 
  gradually 
  rounded. 
  Anal 
  orifice 
  opposite 
  

   the 
  anterior 
  group 
  of 
  circumgenital 
  glands. 
  Vagioal 
  orifice 
  opposite 
  the 
  space 
  

   between 
  the 
  two 
  lateral 
  groups 
  of 
  circumgenital 
  glands. 
  The 
  last-named 
  in 
  five 
  

   groups 
  ; 
  the 
  anterior 
  group 
  consisting 
  of 
  about 
  15 
  ; 
  the 
  anterior-laterals 
  of 
  about 
  

   30 
  ; 
  the 
  lower-laterals 
  of 
  about 
  60. 
  Margin 
  of 
  pygidium 
  with 
  six 
  or 
  seven 
  dentate 
  

   lobes 
  on 
  either 
  side 
  ; 
  the 
  third 
  and 
  fourth 
  and 
  the 
  fifth 
  and 
  sixth 
  are 
  adjacent 
  and 
  

   separable 
  only 
  by 
  a 
  narrow 
  line. 
  Squamae 
  simple 
  and 
  very 
  short. 
  Spines 
  small 
  

   and 
  slender. 
  Length, 
  1*5— 
  1'9 
  mm. 
  

  

  Female, 
  second 
  stage. 
  Margin 
  of 
  the 
  pygidium 
  with 
  similar 
  dentate 
  lobes 
  to 
  those 
  

   of 
  the 
  adult, 
  but 
  generally 
  narrower 
  and 
  with 
  the 
  dentations 
  more 
  acute. 
  

  

  Larva. 
  Antennae 
  (fig. 
  27, 
  c) 
  of 
  five 
  segments. 
  Just 
  below 
  the 
  cephalic 
  margin, 
  

   on 
  the 
  dorsal 
  surface, 
  is 
  a 
  pair 
  of 
  relatively 
  large 
  glandular 
  pores 
  (fig. 
  27, 
  c) 
  with 
  

   very 
  strongly 
  curved 
  cylindrical 
  ducts 
  ; 
  the 
  integument 
  surrounding 
  these 
  faintly 
  

   convoluted. 
  These 
  structures 
  have 
  been 
  observed 
  in 
  the 
  exuviae 
  taken 
  from 
  the 
  

   puparia. 
  

  

  Uganda 
  : 
  Kampala, 
  on 
  Loranthus 
  entebbiensis, 
  15.xii.1918 
  (C. 
  C. 
  Gowdey). 
  

  

  