﻿INVESTIGATIONS 
  INTO 
  THE 
  BIONOMICS 
  OF 
  GLOSSINA 
  PALPALIS. 
  409 
  

  

  Altogether 
  about 
  10 
  or 
  12 
  bush-buck 
  were 
  shot 
  under 
  conditions 
  which 
  would 
  

   have 
  made 
  presence 
  of 
  fly 
  explicable. 
  In 
  only 
  one 
  case 
  was 
  fly 
  found,* 
  but 
  in 
  no 
  

   case 
  did 
  its 
  absence 
  cause 
  real 
  surprise 
  except 
  in 
  the 
  one 
  cited 
  above. 
  Had 
  these 
  

   animals 
  been 
  situtunga, 
  absence 
  of 
  fly 
  upon 
  them 
  would 
  have 
  been 
  extraordinarily 
  

   exceptional. 
  The 
  evidence 
  concerning 
  preference 
  of 
  Glossina 
  palpalis 
  for 
  bush- 
  

   buck 
  is 
  completely 
  conflicting. 
  As 
  in 
  the 
  case 
  of 
  bush-pig, 
  dispersion 
  of 
  fly 
  inland 
  

   from 
  water 
  indicates 
  bush-buck 
  to 
  be 
  a 
  favoured 
  host, 
  but 
  absence 
  of 
  fly 
  on 
  shot 
  

   animals 
  indicates 
  the 
  contrary. 
  

  

  Water-buck. 
  — 
  Bugunga 
  Peninsula, 
  15th 
  August 
  1915. 
  

  

  Very 
  large 
  male 
  shot 
  about 
  noon, 
  grazing 
  on 
  edge 
  of 
  thicket 
  about 
  200 
  yards 
  from 
  

   shore. 
  Good 
  weather, 
  and 
  boys 
  were 
  catching 
  fly 
  near 
  at 
  hand 
  at 
  the 
  time. 
  No 
  

   fly 
  on 
  animal. 
  Infestation 
  at 
  this 
  point 
  : 
  — 
  Male 
  density 
  4*5 
  ; 
  female 
  percentage 
  

   25-0. 
  

  

  The 
  evidence 
  is 
  negative, 
  in 
  view 
  of 
  the 
  above 
  notes 
  on 
  bush-buck 
  and 
  bush-pig. 
  

  

  Domestic 
  Pig. 
  — 
  Island 
  of 
  Serinya, 
  15th 
  September 
  1914. 
  

  

  Large 
  fat 
  female, 
  one 
  of 
  two, 
  shot 
  about 
  10.30 
  a.m., 
  150 
  yards 
  from 
  shore, 
  behind 
  

   dense 
  fringe 
  of 
  reeds, 
  in 
  open 
  forest. 
  Day 
  overcast, 
  but 
  clearing. 
  Large 
  following 
  

   swarm, 
  considering 
  conditions 
  — 
  perhaps 
  40 
  flies, 
  of 
  which 
  many 
  fed. 
  Density 
  at 
  

   this 
  point 
  very 
  low, 
  but 
  tracks 
  of 
  pig 
  followed 
  backwards 
  led 
  to 
  a 
  densely 
  infested 
  

   reach 
  of 
  shore 
  500 
  to 
  800 
  yards 
  distant. 
  

  

  A 
  number 
  of 
  pigs 
  were 
  shot 
  on 
  the 
  Island 
  of 
  Bukassa 
  under 
  conditions 
  almost 
  

   equally 
  favourable, 
  but 
  no 
  following 
  swarm 
  was 
  observed 
  on 
  them. 
  In 
  this 
  case 
  

   on 
  Serinya 
  the 
  evidence 
  secured 
  in 
  this 
  manner 
  confirms 
  precisely 
  the 
  evidence 
  

   presented 
  in 
  Sect. 
  V 
  (c) 
  leaving 
  no 
  doubt 
  as 
  to 
  the 
  status 
  of 
  domestic 
  pig 
  as 
  a 
  

   favoured 
  host 
  — 
  at 
  least 
  under 
  certain 
  conditions. 
  

  

  Hippopotamus. 
  — 
  Island 
  of 
  Buninga 
  (Sesse), 
  26th 
  July 
  1915. 
  

  

  Adult 
  female 
  shot 
  about 
  9 
  a.m. 
  It 
  was 
  apparently 
  sleeping 
  on 
  the 
  shore, 
  and, 
  

   aroused 
  by 
  approach 
  of 
  canoe, 
  was 
  cut 
  off 
  from 
  the 
  water. 
  Body 
  fell 
  on 
  land, 
  less 
  

   than 
  100 
  yards 
  from 
  the 
  point 
  where 
  shot. 
  Large 
  following 
  swarm 
  (estimated 
  at 
  

   125 
  flies), 
  of 
  which 
  many 
  (estimated 
  at 
  30 
  flies) 
  fed. 
  They 
  fed 
  on 
  eyelids, 
  nose, 
  

   feet 
  and 
  belly, 
  and 
  engorged 
  freely 
  despite 
  the 
  thickness 
  of 
  the 
  skin 
  — 
  evidently 
  

   on 
  blood 
  in 
  the 
  skin, 
  if 
  this 
  is 
  possible. 
  (It 
  occurred 
  to 
  me 
  afterwards 
  that 
  though 
  

   gorged 
  or 
  partly 
  gorged 
  flies 
  were 
  seen 
  apparently 
  feeding 
  on 
  the 
  legs 
  and 
  belly, 
  

   no 
  flies 
  were 
  actually 
  observed 
  engorging 
  except 
  on 
  the 
  eyelids 
  and 
  nose.) 
  Infesta- 
  

   tion 
  at 
  this 
  point 
  : 
  — 
  Male 
  density 
  26*0 
  ; 
  female 
  percentage 
  22*0. 
  

  

  This 
  is 
  the 
  one 
  instance 
  in 
  which 
  a 
  hippo 
  was 
  shot 
  (a) 
  on 
  land, 
  (b) 
  without 
  plunging 
  

   into 
  water, 
  (c) 
  in 
  a 
  fly-infested 
  locality, 
  and 
  (d) 
  at 
  an 
  hour 
  when 
  fly 
  was 
  active. 
  

   The 
  conditions 
  are 
  not 
  easy 
  to 
  meet, 
  but 
  this 
  single 
  case 
  fixes 
  the 
  status 
  of 
  hippo 
  

   as 
  a 
  favoured 
  host. 
  

  

  * 
  In 
  this 
  case 
  there 
  was 
  but 
  one 
  fly 
  and 
  it 
  is 
  not 
  certain 
  that 
  it 
  was 
  attracted 
  to 
  the 
  

   antelope. 
  

  

  