﻿THE 
  ANOPHELES 
  OF 
  MALAYA. 
  

  

  131 
  

  

  simple. 
  The 
  posterior 
  clypeal 
  hairs 
  are 
  placed 
  far 
  back, 
  widely 
  separated 
  from 
  

   one 
  another, 
  and 
  simple. 
  

  

  Thorax. 
  On 
  the 
  dorsum 
  of 
  the 
  thorax 
  are 
  borne 
  four 
  pairs 
  of 
  simple 
  leaflets, 
  

   two 
  pairs 
  on 
  the 
  anterior 
  edge 
  of 
  the 
  thorax 
  and 
  two 
  pairs 
  in 
  the 
  position 
  shown 
  

   in 
  the 
  figure. 
  

  

  Abdomen. 
  A 
  pair 
  of 
  simple 
  leaflets 
  is 
  borne 
  on 
  each 
  segment 
  of 
  the 
  abdomen 
  

   from 
  the 
  second 
  to 
  the 
  seventh. 
  

  

  The 
  Mature 
  Larva 
  (fig. 
  2). 
  

  

  Head. 
  The 
  inner 
  anterior 
  clypeal 
  hairs 
  are 
  long 
  and 
  widely 
  separated 
  from 
  one 
  

   another 
  ; 
  these 
  hairs 
  are 
  very 
  finely 
  pinnate, 
  a 
  character 
  that 
  can 
  however 
  be 
  dis- 
  

   cerned 
  only 
  with 
  high 
  magnifications. 
  The 
  outer 
  anterior 
  clypeal 
  hairs 
  are 
  very 
  

   short 
  and 
  are 
  placed 
  close 
  to 
  the 
  inner 
  ; 
  they 
  are 
  about 
  one-fourth 
  the 
  length 
  of 
  the 
  

   inner, 
  and 
  simple. 
  The 
  posterior 
  clypeal 
  hairs 
  are 
  placed 
  far 
  back 
  and 
  slightly 
  

   external 
  to 
  the 
  lineof 
  the 
  inner 
  anterior 
  clypeal 
  hairs 
  ; 
  they 
  are 
  about 
  equal 
  in 
  length 
  

   to 
  the 
  outer 
  anterior 
  clypeal 
  hairs 
  and 
  are 
  simple. 
  The 
  position 
  of 
  the 
  posterior 
  

   clypeal 
  hairs 
  is 
  a 
  character 
  which 
  enables 
  one 
  readily 
  to 
  distinguish 
  the 
  larva 
  of 
  

   kochi 
  from 
  the 
  larva 
  of 
  rossi 
  and 
  other 
  species 
  which 
  in 
  some 
  characters 
  it 
  resembles. 
  

   Of 
  the 
  two 
  pairs 
  of 
  hairs 
  placed 
  behind 
  the 
  row 
  of 
  six 
  frontal 
  hairs 
  and 
  between 
  the 
  

   eyes 
  the 
  inner 
  are 
  simple 
  and 
  the 
  outer 
  branched. 
  

  

  Fig. 
  2. 
  Head 
  and 
  thorax 
  of 
  mature 
  larva 
  

   of 
  Anopheles 
  kochi, 
  Don. 
  

  

  Thorax. 
  In 
  addition 
  to 
  the 
  usual 
  stout 
  feathered 
  hairs 
  and 
  bristles, 
  the 
  dorsum 
  

   of 
  the 
  thorax 
  carries 
  a 
  pair 
  of 
  palmate 
  hairs 
  ; 
  each 
  whorl 
  is 
  composed 
  of 
  ten 
  leaflets 
  

   which 
  are 
  long 
  and 
  narrowly 
  lanceolate 
  in 
  form. 
  

  

  Abdomen. 
  Palmate 
  hairs 
  are 
  borne 
  on 
  the 
  second 
  to 
  seventh 
  segments. 
  On 
  the 
  

   first 
  two 
  and 
  the 
  last 
  of 
  these 
  segments, 
  the 
  leaflets 
  are 
  narrowly 
  lanceolate, 
  on 
  the 
  

   CC 
  53) 
  c2 
  

  

  