﻿192 
  

  

  ROBERT 
  NEWSTEAD. 
  

  

  spines 
  (fig. 
  14, 
  c) 
  short 
  and 
  sub-palmate, 
  the 
  distal 
  portion 
  being 
  broadly 
  flattened 
  

   and 
  deeply 
  divided. 
  Anal 
  lobes 
  (fig. 
  14, 
  d) 
  short 
  and 
  obtusely 
  rounded 
  ; 
  inner 
  

   margin 
  slightly 
  longer 
  than 
  the 
  proximal 
  ; 
  external 
  margin 
  strongly 
  arched. 
  Length, 
  

   1*8-2 
  mm. 
  

  

  Female, 
  young 
  adult. 
  Flat 
  ; 
  straw-coloured 
  when 
  dry. 
  Form 
  when 
  mounted 
  under 
  

   pressure 
  somewhat 
  ovate. 
  Antennae 
  (fig. 
  14, 
  a) 
  with 
  eight 
  segments 
  and 
  similar 
  in 
  

   form 
  to 
  those 
  of 
  the 
  adult. 
  Legs 
  ii. 
  and 
  iii. 
  much 
  longer 
  than 
  leg 
  i. 
  Stigmatic 
  clefts 
  

   (fig. 
  14, 
  b) 
  indicated 
  by 
  a 
  very 
  slight 
  indentation 
  of 
  the 
  margin 
  ; 
  spines 
  three, 
  the 
  

   laterals 
  minute 
  and 
  acutely 
  pointed. 
  Marginal 
  spines 
  (fig. 
  14, 
  6, 
  c) 
  as 
  in 
  the 
  adult. 
  

   Anal 
  cleft 
  free, 
  its 
  length 
  slightly 
  less 
  than 
  twice 
  the 
  length 
  of 
  the 
  lobes 
  ; 
  the 
  latter 
  

   (fig. 
  14, 
  d) 
  as 
  in 
  the 
  old 
  adults. 
  

  

  Uganda 
  : 
  Bukeke 
  Isl., 
  Sesse 
  Islands, 
  Lake 
  Victoria, 
  on 
  Luzibarziba, 
  9.x. 
  1918 
  

   (0. 
  0. 
  Gowdey). 
  

  

  Fig. 
  14. 
  Lecanium 
  nigrum 
  var. 
  nitidum, 
  Newst., 
  $ 
  ; 
  a, 
  

   antenna 
  ; 
  b, 
  stigmatic 
  and 
  marginal 
  spines 
  ; 
  c, 
  marginal 
  

  

  spines 
  ; 
  d, 
  anal 
  lobes. 
  

  

  Its 
  small 
  size 
  and 
  generally 
  hemispherical 
  form, 
  together 
  with 
  the 
  highly 
  polished 
  

   integument 
  and 
  the 
  sub-palmate 
  marginal 
  hairs, 
  are 
  the 
  distinctive 
  features 
  of 
  this 
  

   well-marked 
  variety. 
  

  

  Platysaissetia 
  montrichardiae, 
  sp. 
  nov. 
  

  

  Female, 
  old 
  adult. 
  Blackish 
  or 
  sooty 
  brown. 
  Generally 
  more 
  or 
  less 
  ovate 
  and 
  

   very 
  slightly 
  narrowed 
  in 
  front 
  ; 
  but 
  occasionally 
  the 
  outline 
  is 
  irregular, 
  indented, 
  

   or 
  markedly 
  asymmetrical; 
  dorsum 
  very 
  low 
  convex 
  or 
  almost 
  flat, 
  scabrous, 
  the 
  minute 
  

   elevations 
  often 
  carrying 
  small 
  particles 
  of 
  the 
  test 
  of 
  the 
  young 
  female. 
  Vertical 
  

   sides 
  markedly 
  shallow. 
  Pseudo-margin 
  relatively 
  faintly 
  produced. 
  Tubular 
  

   glands 
  at 
  the 
  extreme 
  margin. 
  Stigmatic 
  clefts 
  rarely 
  traceable. 
  Venter 
  hollow, 
  

   but 
  more 
  or 
  less 
  covered 
  with 
  a 
  rather 
  thick 
  pellicle 
  of 
  white 
  wax. 
  Dermal 
  

   cells 
  (fig. 
  15, 
  a, 
  from 
  an 
  unstained 
  preparation) 
  very 
  irregular 
  in 
  outline, 
  each 
  pale 
  

   area 
  with 
  a 
  distinct 
  pore 
  at 
  the 
  extreme 
  edge 
  ; 
  the 
  walls 
  of 
  each 
  cell 
  area 
  thick, 
  dark, 
  

   and 
  very 
  irregular. 
  Other 
  details 
  as 
  in 
  the 
  young 
  adult. 
  Length 
  4-5*2 
  ; 
  width 
  

   2-9-3-9. 
  mm. 
  

  

  