﻿BKEEDIXi. 
  -PLACES 
  OK 
  THE 
  ANOPHELINES 
  OF 
  MALAYA. 
  

  

  During 
  the 
  period 
  from 
  October 
  to 
  April, 
  then, 
  the 
  larvae 
  of 
  A. 
  aconitus 
  were 
  

   found 
  constantly 
  and 
  in 
  such 
  abundance 
  that 
  they 
  almost 
  outnumbered 
  the 
  larvae 
  of 
  

   the 
  seven 
  other 
  species 
  of 
  Anophelines 
  taken 
  at 
  the 
  same 
  time. 
  

  

  The 
  overwhelming 
  dominance 
  of 
  this 
  species 
  over 
  all 
  others 
  up 
  till 
  the 
  end 
  of 
  October, 
  

   and 
  thereafter 
  the 
  sudden 
  relative 
  increase 
  in 
  the 
  others, 
  is 
  incidentally 
  to 
  be 
  noticed. 
  

  

  For 
  the 
  purpose 
  of 
  comparison, 
  larvae 
  were 
  collected 
  under 
  similar 
  conditions 
  regu- 
  

   larly 
  twice 
  a 
  week 
  from 
  1st 
  November 
  from 
  another 
  breeding-place, 
  distant 
  about 
  a 
  

   mile 
  in 
  direct 
  line 
  from 
  the 
  former 
  one, 
  where 
  preliminary 
  investigations 
  had 
  shown 
  the 
  

   absence 
  of 
  the 
  larvae 
  of 
  A. 
  aconitus, 
  though 
  other 
  members 
  of 
  Dr. 
  Hacker's 
  Group 
  2 
  

   were 
  excessively 
  abundant. 
  This 
  was 
  a 
  very 
  large 
  artificial 
  pond 
  about 
  50 
  yards 
  

   square 
  and 
  kept 
  free 
  from 
  reeds 
  and 
  coarse 
  vegetation. 
  It 
  seemed 
  to 
  be 
  of 
  more 
  or 
  

   less 
  uniform 
  depth, 
  which 
  averaged 
  four 
  to 
  five 
  feet, 
  and 
  it 
  was 
  used 
  by 
  the 
  Chinese 
  

   owners 
  for 
  the 
  cultivation 
  of 
  fish. 
  The 
  data 
  obtained 
  by 
  these 
  collections 
  are 
  given 
  in 
  

   the 
  following 
  table 
  : 
  — 
  

  

  TABLE 
  II. 
  

  

  Date. 
  

  

  A. 
  

  

  aconitus. 
  

  

  A. 
  

  

  barbirostris. 
  

  

  A. 
  

   hyrcanus. 
  

  

  A. 
  

   fuliginosits. 
  

  

  A. 
  

  

  subpictus. 
  

  

  A. 
  

  

  vagus. 
  

  

  29.X.20 
  . 
  . 
  

  

  

  57 
  

  

  26 
  

  

  5 
  

  

  _ 
  

  

  3 
  

  

  l.xi.20 
  . 
  

  

  

  

  — 
  

  

  36 
  

  

  17 
  

  

  7 
  

  

  1 
  

  

  23 
  

  

  19.xi.20 
  . 
  

  

  

  

  — 
  

  

  24 
  

  

  48 
  

  

  6 
  

  

  

  

  19 
  

  

  20.xi.20 
  . 
  

  

  

  

  — 
  

  

  36 
  

  

  132 
  

  

  6 
  

  

  

  — 
  

  

  25.xi.20 
  . 
  

  

  

  

  — 
  . 
  

  

  51 
  

  

  201 
  

  

  4 
  

  

  1 
  

  

  3 
  

  

  26.xi.20 
  . 
  

  

  

  

  — 
  

  

  82 
  

  

  97 
  

  

  — 
  

  

  1 
  

  

  — 
  

  

  30.xi.20 
  . 
  

  

  

  

  — 
  

  

  94 
  

  

  116 
  

  

  3 
  

  

  — 
  

  

  — 
  

  

  3.xii.20 
  . 
  

  

  

  

  — 
  

  

  62 
  

  

  133 
  

  

  — 
  

  

  — 
  . 
  

  

  5 
  

  

  7.xii.20 
  . 
  

  

  

  

  — 
  

  

  30 
  

  

  150 
  

  

  2 
  

  

  — 
  

  

  2 
  

  

  10.xii.20. 
  

  

  

  

  — 
  

  

  42 
  

  

  157 
  

  

  3 
  

  

  — 
  

  

  18 
  

  

  14.xii.20 
  . 
  

  

  

  

  — 
  

  

  103 
  

  

  208 
  

  

  13 
  

  

  — 
  

  

  22 
  

  

  17.xii.20. 
  

  

  

  

  — 
  

  

  98 
  

  

  108 
  

  

  4 
  

  

  — 
  

  

  10 
  

  

  21.xii.20. 
  

  

  

  

  — 
  

  

  242 
  

  

  175 
  

  

  1 
  

  

  1 
  

  

  11 
  

  

  24.xii.20 
  . 
  

  

  

  

  — 
  

  

  52 
  

  

  92 
  

  

  — 
  

  

  9 
  

  

  4 
  

  

  28.xii.20 
  . 
  

  

  

  

  — 
  

  

  93 
  

  

  76 
  

  

  4 
  

  

  9 
  

  

  57 
  

  

  31.xii.20. 
  

  

  

  

  — 
  

  

  155 
  

  

  170 
  

  

  — 
  

  

  — 
  

  

  16 
  

  

  4.i.21 
  

  

  

  

  — 
  - 
  

  

  97 
  

  

  51 
  

  

  — 
  

  

  — 
  

  

  — 
  

  

  7.i.21 
  

  

  

  

  — 
  

  

  70 
  

  

  87 
  

  

  — 
  

  

  — 
  

  

  5 
  

  

  ll.i.21 
  . 
  

  

  

  

  — 
  . 
  

  

  114 
  

  

  47 
  

  

  — 
  

  

  — 
  

  

  — 
  

  

  14.1.21 
  . 
  

  

  

  

  — 
  

  

  100 
  

  

  73 
  

  

  — 
  

  

  — 
  

  

  

  20.i.21 
  

  

  

  

  — 
  

  

  44 
  

  

  39 
  

  

  — 
  

  

  — 
  

  

  36 
  

  

  21.1.21 
  

  

  

  

  — 
  

  

  76 
  

  

  40 
  

  

  — 
  

  

  — 
  . 
  

  

  4 
  

  

  25.i.21 
  . 
  

  

  

  

  2 
  

  

  25 
  

  

  167 
  

  

  2 
  

  

  4 
  

  

  110 
  

  

  28.i.21 
  . 
  

  

  

  

  — 
  

  

  110 
  

  

  80 
  

  

  — 
  

  

  — 
  

  

  7 
  

  

  l.ii.21 
  

  

  

  

  — 
  

  

  55 
  

  

  263 
  

  

  7 
  

  

  — 
  

  

  40 
  

  

  4.ii.21 
  

  

  

  

  — 
  

  

  74 
  

  

  230 
  

  

  — 
  

  

  — 
  

  

  22 
  

  

  7.ii.21 
  . 
  

  

  

  

  — 
  

  

  54 
  

  

  100 
  

  

  — 
  

  

  — 
  

  

  15 
  

  

  ll.ii.21 
  . 
  

  

  

  

  — 
  . 
  

  

  11 
  

  

  88 
  

  

  — 
  

  

  — 
  

  

  2 
  

  

  15.ii.21 
  . 
  

  

  

  

  — 
  

  

  51 
  

  

  332 
  

  

  3 
  

  

  — 
  

  

  11 
  

  

  18.ii.21 
  . 
  

  

  

  

  — 
  

  

  48 
  

  

  240 
  

  

  1 
  

  

  — 
  

  

  13 
  

  

  22.ii.21 
  . 
  

  

  

  

  — 
  

  

  60 
  

  

  371 
  

  

  . 
  — 
  

  

  — 
  

  

  13 
  

  

  25.ii.21 
  . 
  

  

  

  

  — 
  

  

  15 
  

  

  289 
  

  

  1 
  

  

  — 
  

  

  36 
  

  

  l.iii.21 
  . 
  

  

  . 
  . 
  . 
  

  

  

  — 
  

  

  34 
  

  

  259 
  

  

  — 
  

  

  1 
  

  

  36 
  

  

  4.iii.21 
  . 
  

  

  

  

  — 
  . 
  

  

  16 
  

  

  152 
  

  

  — 
  

  

  — 
  

  

  2 
  

  

  8.iii.21 
  . 
  

  

  

  

  — 
  - 
  

  

  13 
  

  

  401 
  

  

  2 
  

  

  — 
  

  

  26 
  

  

  ll.iii.21 
  . 
  

  

  

  

  — 
  

  

  17 
  

  

  229 
  

  

  . 
  — 
  . 
  

  

  — 
  

  

  4 
  

  

  15.iii.21 
  . 
  

  

  

  

  — 
  

  

  11 
  

  

  304 
  

  

  1 
  

  

  — 
  

  

  1 
  

  

  18.iii.21 
  . 
  

  

  

  

  — 
  

  

  4 
  

  

  113 
  

  

  3 
  

  

  — 
  

  

  — 
  

  

  22.iii.21 
  . 
  

  

  

  

  — 
  

  

  13 
  

  

  115 
  

  

  9 
  

  

  — 
  

  

  3 
  

  

  29.iii.21 
  . 
  

  

  

  

  — 
  

  

  3 
  

  

  53 
  

  

  — 
  . 
  

  

  — 
  

  

  244 
  

  

  l.iv.21 
  . 
  

  

  

  

  — 
  

  

  80 
  

  

  200 
  

  

  — 
  . 
  

  

  — 
  

  

  9 
  

  

  5.iv.21 
  . 
  

  

  

  

  — 
  

  

  18 
  

  

  177 
  

  

  1 
  

  

  4 
  

  

  130 
  

  

  8.iv.21 
  . 
  

  

  

  

  — 
  

  

  20 
  

  

  247 
  

  

  3 
  

  

  — 
  

  

  120 
  

  

  Totals 
  

  

  2 
  

  

  2,589 
  

  

  6,743 
  

  

  91 
  

  

  31 
  

  

  1,093 
  

  

  