﻿382 
  

  

  W. 
  F. 
  FISKE. 
  

  

  On 
  Sesse 
  the 
  outcome 
  was 
  much 
  more 
  decisive. 
  Situtunga 
  were 
  found 
  everywhere 
  

   in 
  numbers 
  which 
  are 
  extraordinary 
  for 
  an 
  antelope 
  accounted 
  " 
  rare 
  " 
  and 
  a 
  denizen 
  

   only 
  of 
  marshes. 
  They 
  were 
  even 
  more 
  numerous 
  in 
  the 
  overgrown 
  plantations 
  

   and 
  village 
  sites 
  on 
  the 
  plateaus, 
  and 
  elsewhere 
  on 
  the 
  higher 
  levels, 
  than 
  in 
  the 
  

   woodland 
  and 
  marshes 
  along 
  shore. 
  The 
  island 
  is 
  nearly 
  forty 
  miles 
  in 
  length, 
  and 
  

   eventually 
  was 
  explored 
  from 
  end 
  to 
  end. 
  Practically 
  every 
  bit 
  of 
  woodland 
  or 
  

   jungle 
  upon 
  it 
  was 
  found 
  to 
  be 
  infested 
  by 
  Glossina, 
  including 
  points 
  in 
  the 
  interior 
  

   of 
  the 
  western 
  peninsula 
  known 
  as 
  Buninga 
  that 
  are 
  at 
  least 
  2J 
  miles 
  from 
  the 
  lake. 
  

   The 
  only 
  exceptions 
  were 
  certain 
  areas 
  of 
  woodland 
  in 
  the 
  central 
  portion 
  of 
  the 
  

   eastern 
  half 
  of 
  the 
  island 
  (Bugalla) 
  which, 
  though 
  hardly 
  a 
  thousand 
  yards 
  from 
  

   the 
  lake, 
  were 
  completely 
  surrounded 
  by 
  open 
  grass 
  land. 
  Elsewhere 
  a 
  great 
  diversity 
  

   of 
  inland 
  environment 
  was 
  found 
  high 
  hills 
  and 
  low 
  ; 
  marshes 
  and 
  rocky 
  summits 
  ; 
  

   original 
  forest 
  and 
  the 
  frequently 
  impenetrable 
  jungles 
  which 
  have 
  sprung 
  up 
  in 
  

   the 
  abandoned 
  plantations 
  ; 
  but 
  everywhere 
  that 
  shelter 
  at 
  all 
  attractive 
  to 
  the 
  

   flies 
  was 
  found, 
  there 
  would 
  be 
  both 
  situtunga 
  and 
  fly. 
  

  

  Except 
  at 
  the 
  very 
  beginning 
  formal 
  records 
  of 
  " 
  catches 
  " 
  in 
  the 
  interior 
  were 
  not 
  

   kept, 
  because 
  the 
  work 
  of 
  exploration 
  was 
  done 
  almost 
  entirely 
  on 
  dull 
  days 
  or 
  at 
  

   hours 
  (after 
  3 
  p.m.) 
  when 
  the 
  flies 
  are 
  not 
  as 
  active 
  as 
  earlier. 
  The 
  records 
  made 
  

   at 
  the 
  beginning 
  are 
  presented 
  in 
  Table 
  XVIII, 
  in 
  comparison 
  with 
  those 
  from 
  

   Bukassa, 
  where 
  inland 
  extension 
  of 
  range 
  is 
  due 
  to 
  great 
  numbers 
  of 
  pigs. 
  

  

  Table 
  XVIII. 
  

  

  Catches 
  of 
  Fly 
  on 
  Islands 
  of 
  Bukassa 
  and 
  Sesse 
  (Bugalla) 
  showing 
  Inland 
  

   Extension 
  of 
  Range 
  due 
  to 
  Presence 
  of 
  Game, 
  made 
  in 
  September 
  1914. 
  

  

  

  Bukassa 
  Island. 
  

  

  Bugalla 
  Island. 
  

  

  Collection 
  Points. 
  

  

  Male 
  

   den- 
  

   sity. 
  

  

  Female 
  

   ratio. 
  

  

  Male 
  

   density. 
  

  

  Female 
  

   ratio. 
  

  

  Lake 
  shore 
  

  

  Sandy 
  plain, 
  400 
  yards 
  inland 
  

   Hills, 
  1,000 
  to 
  2,000 
  yards 
  inland 
  . 
  . 
  

   „ 
  2,000 
  „ 
  3,000 
  „ 
  

   „ 
  3,000 
  „ 
  4,000 
  „ 
  

   „ 
  4,000 
  or 
  more 
  ,, 
  ,, 
  

  

  9'8 
  

  

  2-2 
  

  

  10-1 
  % 
  

  

  io-o 
  % 
  

  

  24-2 
  

   25*0 
  

  

  io-o 
  

  

  4*7 
  

  

  1-3 
  

  

  •4 
  

  

  22-5 
  % 
  

  

  16-6 
  % 
  

  

  7-5 
  % 
  

  

  9-4 
  % 
  

  

  \None 
  

  

  J 
  Caught. 
  

  

  Of 
  significance 
  is 
  the 
  low 
  percentage 
  of 
  females 
  in 
  the 
  interior 
  points 
  ; 
  indicating 
  

   attractive 
  shelter 
  or 
  ample 
  food 
  supply 
  or 
  both. 
  

  

  The 
  only 
  other 
  host 
  animal 
  occurring 
  on 
  the 
  islands, 
  that 
  is 
  found 
  at 
  all 
  commonly 
  

   more 
  than 
  a 
  few 
  yards 
  from 
  the 
  water 
  front 
  during 
  hours 
  when 
  flies 
  are 
  active, 
  is 
  

   the 
  monitor 
  lizard 
  (Varanus)* 
  On 
  certain 
  islands 
  — 
  notably 
  Manene 
  and 
  Dziru. 
  

  

  * 
  Except 
  on 
  the 
  sudd-surrounded 
  islands 
  of 
  Baujako 
  and 
  Binga, 
  where 
  bush-buck, 
  

   bush-pig 
  and 
  buffalo 
  occur, 
  and 
  which 
  are 
  faunistically 
  a 
  part 
  of 
  the 
  mainland. 
  

  

  