﻿THE 
  EARLY 
  STAGES 
  OF 
  WEST 
  AFRICAN 
  MOSQUITOS. 
  

  

  415 
  

  

  Uranotaenia 
  inornata, 
  Theo. 
  

  

  Larva. 
  — 
  The 
  larva 
  is 
  small, 
  length 
  when 
  fully 
  grown 
  about 
  3-5 
  mm., 
  and 
  has 
  

   a 
  very 
  dark-coloured 
  head. 
  The 
  following 
  description 
  is 
  based 
  on 
  an 
  examination 
  

   of 
  two 
  larvae. 
  

  

  ST 
  Head 
  (fig. 
  5) 
  very 
  highly 
  chitinised 
  and 
  almost 
  black 
  ; 
  in 
  the 
  fully 
  grown 
  larva 
  

   the 
  length 
  and 
  the 
  greatest 
  breadth 
  are 
  about 
  equal 
  (0-7 
  mm.). 
  Antennae 
  very 
  dark, 
  

   short 
  (0-6 
  mm.), 
  almost 
  cylindrical, 
  bearing 
  a 
  single 
  small 
  hair 
  in 
  place 
  of 
  a 
  tuft, 
  

   and 
  furnished 
  at 
  the 
  distal 
  end 
  with 
  the 
  usual 
  setae 
  and 
  sensory 
  processes. 
  Anterior 
  

  

  Fig. 
  5. 
  Uranotaenia 
  inornata, 
  Theo., 
  head 
  and 
  terminal 
  segments 
  of 
  larva 
  : 
  a, 
  mental 
  

  

  plate 
  ; 
  b, 
  scales 
  of 
  pecten. 
  

  

  dorsal 
  hairs 
  situated 
  far 
  forwards, 
  the 
  pre-antennal 
  hairs 
  of 
  Lang 
  single, 
  stout, 
  long 
  

   and 
  tapering, 
  the 
  outer 
  post-antennals 
  being 
  tufts 
  of 
  about 
  live 
  hairs, 
  the 
  mid 
  post- 
  

   antennals 
  and 
  the 
  inner 
  post-antennals 
  placed 
  rather 
  close 
  together, 
  the 
  former 
  

   represented 
  by 
  a 
  single, 
  long, 
  slender 
  hair, 
  and 
  the 
  latter 
  by 
  a 
  very 
  small 
  delicate 
  

   hair. 
  Eyes 
  large, 
  situated 
  in 
  the 
  angles 
  at 
  the 
  widest 
  part 
  of 
  the 
  head. 
  Mental 
  

   plate 
  (fig. 
  5, 
  a) 
  very 
  dense, 
  furnished 
  with 
  numerous 
  very 
  small 
  teeth, 
  the 
  central 
  

   one 
  somewhat 
  larger 
  than 
  the 
  others. 
  

  

  