﻿MOSQUITOS 
  OF 
  FAR 
  EASTERN 
  PORTS. 
  343 
  

  

  5. 
  Stegomyia 
  W-alba, 
  Theo. 
  

  

  Malay 
  Peninsula 
  : 
  Kuala 
  Lumpur. 
  

   Siam 
  : 
  Bangkok. 
  

   Sumatra 
  : 
  Pulau 
  Weh. 
  

  

  6. 
  Stegomyia 
  trilineata, 
  Leic. 
  

  

  Malay 
  Peninsula 
  : 
  Ulu 
  Gombak, 
  Selangor. 
  

  

  7. 
  Stegomyia 
  desmotes, 
  Giles. 
  

  

  Malay 
  Peninsula 
  : 
  Ulu 
  Gombak, 
  Selangor. 
  

  

  8. 
  Stegomyia 
  albolineata, 
  Theo. 
  

  

  Malay 
  Peninsula 
  : 
  Kuala 
  Lumpur. 
  

  

  IV. 
  General 
  Remarks. 
  

  

  Mosquitos 
  on 
  Ships. 
  — 
  It 
  was 
  pertinent 
  to 
  the 
  subject'of 
  my 
  enquiry 
  to 
  endeavour 
  

   to 
  learn 
  to 
  what 
  extent 
  mosquitos 
  were 
  in 
  fact 
  conveyed 
  on 
  ship-board 
  from 
  port 
  

   to 
  port. 
  In 
  the 
  course 
  of 
  this 
  enquiry, 
  I 
  travelled 
  on 
  a 
  number 
  of 
  ships, 
  some 
  of 
  

   them 
  of 
  recent 
  construction, 
  some 
  of 
  them 
  old. 
  Careful 
  examination 
  was 
  made 
  in 
  

   port 
  and 
  at 
  sea. 
  Once 
  only 
  was 
  Stegomyia 
  fasciata 
  observed, 
  and 
  on 
  that 
  occasion 
  

   the 
  ship 
  lay 
  in 
  a 
  river 
  on 
  both 
  banks 
  of 
  which 
  this 
  species 
  was 
  breeding 
  in 
  very 
  

   large 
  numbers. 
  

  

  Occurrence 
  of 
  S. 
  fasciata 
  inland. 
  — 
  It 
  is 
  often 
  stated 
  that 
  in 
  the 
  East 
  S. 
  fasciata 
  

   is 
  found 
  on 
  land 
  only 
  near 
  the 
  sea 
  coast. 
  It 
  is 
  therefore 
  of 
  some 
  importance 
  to 
  note 
  

   its 
  occurrence 
  at 
  inland 
  points 
  in 
  Java 
  and 
  the 
  Malay 
  Peninsula. 
  This 
  species 
  

   was 
  taken 
  at 
  Garoet, 
  in 
  West 
  Java, 
  40 
  miles 
  from 
  the 
  sea 
  and 
  2,300 
  feet 
  above 
  sea- 
  

   level. 
  Within 
  the 
  past 
  ten 
  years 
  S. 
  fasciata 
  has 
  replaced 
  S. 
  albopicta 
  (scutellaris) 
  

   as 
  the 
  common 
  Stegomyia 
  species 
  in 
  Kuala 
  Lumpur, 
  an 
  inland 
  town 
  of 
  the 
  Malay 
  

   Peninsula 
  27 
  miles 
  from 
  the 
  sea. 
  - 
  

  

  Trade 
  Routes. 
  — 
  The 
  old 
  trade 
  routes 
  between 
  America 
  and 
  the 
  Orient 
  have 
  been 
  

   little 
  affected 
  by 
  the 
  opening 
  of 
  the 
  Panama 
  Canal 
  to 
  traffic. 
  These 
  routes 
  still 
  

   pass 
  northward 
  by 
  way 
  of 
  Honolulu, 
  Japan 
  and 
  China. 
  There 
  is 
  little 
  direct 
  traffic 
  

   within 
  the 
  tropical 
  zone. 
  

  

  V. 
  Summary 
  and 
  Conclusions. 
  

  

  1. 
  In 
  Far 
  Eastern 
  ports 
  of 
  the 
  equatorial 
  region 
  the 
  yellow 
  fever 
  carrier, 
  Stegomyia 
  

   fasciata, 
  is 
  prevalent 
  at 
  all 
  seasons 
  of 
  the 
  year. 
  Even 
  where 
  efforts 
  have 
  been 
  

   made 
  to 
  reduce 
  its 
  numbers 
  it 
  is 
  common 
  ; 
  where 
  no 
  such 
  efforts 
  have 
  been 
  made, 
  

   it 
  is 
  a 
  veritable 
  plague. 
  

  

  In 
  this 
  region 
  the 
  conditions 
  are 
  highly 
  favourable 
  for 
  the 
  spread 
  of 
  yellow 
  fever 
  

   if 
  it 
  should 
  once 
  be 
  introduced. 
  

  

  2. 
  The 
  old 
  trade 
  routes 
  between 
  America 
  and 
  the 
  Orient 
  have 
  not 
  so 
  far 
  been 
  

   altered 
  with 
  the 
  opening 
  of 
  the 
  Panama 
  Canal 
  to 
  traffic, 
  these 
  routes 
  still 
  pass 
  

   northward 
  by 
  way 
  of 
  Honolulu, 
  China 
  and 
  Japan. 
  It 
  was 
  found 
  in 
  the 
  course 
  

   of 
  this 
  enquiry 
  that 
  in 
  ports 
  situated 
  towards 
  the 
  northerly 
  limit 
  of 
  the 
  Eastern 
  

   tropical 
  belt 
  S. 
  fasciata 
  occurred 
  in 
  relatively 
  small 
  numbers 
  in 
  the 
  colder 
  months 
  

   or 
  was 
  not 
  met 
  with 
  at 
  all. 
  

  

  