﻿34 
  JAS. 
  J. 
  SIMPSON-ENTOMOLOGICAL 
  

  

  but 
  in 
  the 
  Northern 
  Territories 
  it 
  diminishes 
  in 
  numbers 
  and 
  is 
  found 
  only 
  in 
  the 
  

   vicinity 
  of 
  the 
  White 
  and 
  Black 
  Volta 
  Kivers, 
  where 
  there 
  is 
  fringing 
  forest 
  and 
  a 
  

   relatively 
  constant 
  high 
  humidity. 
  

  

  G. 
  tachinoides 
  is 
  the 
  predominant 
  species 
  of 
  this 
  group 
  found 
  in 
  the 
  Northern 
  

   Territories. 
  It 
  is 
  associated 
  with 
  open 
  country, 
  i.e., 
  thin 
  savannah 
  forest 
  tending 
  to 
  

   pure 
  savannah, 
  a 
  relatively 
  low 
  humidity 
  and 
  a 
  prolonged 
  dry 
  season. 
  

  

  G. 
  caliginea 
  is 
  found 
  in 
  the 
  Gold 
  Coast 
  only 
  in 
  the 
  heavily 
  forested 
  part 
  of 
  Western 
  

   Ashanti. 
  In 
  Southern 
  Nigeria 
  it 
  occurs 
  along 
  the 
  coast 
  region. 
  Both 
  of 
  these 
  areas 
  

   are 
  characterised 
  by 
  a 
  relatively 
  high 
  humidity. 
  

  

  ' 
  G. 
  pallicera 
  is 
  also 
  confined 
  to 
  the 
  moist 
  forest 
  region 
  of 
  Western 
  and 
  Southern 
  

   Ashanti. 
  It 
  is 
  also 
  found 
  in 
  Southern 
  Nigeria 
  at 
  Benin 
  City, 
  where 
  the 
  type 
  of 
  

   vegetation 
  and 
  the 
  nature 
  of 
  the 
  climate 
  and 
  rainfall 
  are 
  similar. 
  

  

  Morsitans 
  Group. 
  

  

  Two 
  species 
  of 
  this 
  group, 
  namely, 
  G. 
  longipalpis 
  and 
  G. 
  morsitans, 
  occur 
  in 
  

   the 
  Gold 
  Coast. 
  The 
  former 
  is 
  found 
  in 
  the 
  denser 
  parts 
  of 
  the 
  savannah 
  forest, 
  

   and 
  so 
  far 
  has 
  not 
  been 
  seen 
  south 
  or 
  west 
  of 
  the 
  line 
  dividing 
  the 
  monsoon 
  forest 
  

   from 
  the 
  savannah, 
  while 
  it 
  occurs 
  along 
  the 
  coast 
  in 
  the 
  savannah 
  forest 
  area. 
  A 
  

   glance 
  at 
  the 
  map 
  will 
  make 
  this 
  most 
  interesting 
  distribution 
  clear. 
  

  

  To 
  the 
  north 
  of 
  the 
  savannah 
  forest 
  region 
  it 
  diminishes 
  in 
  numbers 
  and 
  gives 
  

   place 
  to 
  G. 
  morsitans, 
  which, 
  like 
  G. 
  tachinoides, 
  is 
  associated 
  with 
  open 
  country, 
  a 
  

   low 
  relative 
  humidity, 
  a 
  prolonged 
  dry 
  season, 
  and 
  high 
  temperatures. 
  

  

  Fusca 
  Group. 
  

  

  Three 
  species 
  of 
  this 
  group 
  are 
  represented 
  in 
  the 
  Gold 
  Coast. 
  G. 
  fusca 
  is 
  the 
  

   most 
  common, 
  and 
  is 
  found 
  in 
  the 
  densely 
  forested 
  country 
  where 
  there 
  is 
  abundant 
  

   shade, 
  and 
  a 
  fairly 
  equable 
  perennial 
  humidity. 
  

  

  G. 
  nigrofusca 
  and 
  G. 
  tabaniformis 
  are 
  much 
  more 
  rare, 
  but 
  are 
  found 
  in 
  similar 
  

   localities. 
  The 
  former 
  has 
  been 
  recorded 
  from 
  the 
  western 
  part 
  of 
  Ashanti 
  and 
  north 
  

   of 
  Coomassie; 
  the 
  latter 
  in 
  Western 
  Ashanti, 
  in 
  the 
  rain 
  forest 
  in 
  the 
  West 
  of 
  the 
  

   Colony 
  and 
  near 
  Obuasi. 
  The 
  physical 
  features 
  which 
  favour 
  G. 
  fusca 
  seem 
  also 
  to 
  

   be 
  suitable 
  for 
  these 
  two 
  species. 
  

  

  Brevipalpis 
  Group. 
  

  

  The 
  only 
  species 
  of 
  this 
  group 
  found 
  in 
  the 
  Gold 
  Coast 
  is 
  G. 
  medicorum, 
  of 
  which 
  

   two 
  specimens 
  were 
  captured 
  at 
  Bwe 
  Camp 
  on 
  the 
  Volta 
  Kiver, 
  three 
  days 
  from 
  

   Kintampo, 
  by 
  Dr. 
  C. 
  W. 
  S. 
  Boggs. 
  The 
  species 
  has 
  also 
  been 
  taken 
  on 
  the 
  road 
  

   between 
  Preniase 
  and 
  Bassa 
  by 
  Dr. 
  A. 
  Ingram, 
  at 
  Obuasi, 
  by 
  Mr. 
  G. 
  C. 
  Dudgeon, 
  

   and 
  at 
  Sekondi, 
  by 
  Dr. 
  W. 
  M. 
  Graham. 
  

  

  I 
  have 
  already 
  discussed 
  in 
  previous 
  reports 
  the 
  main 
  factors 
  which 
  influence 
  the 
  

   general 
  distribution 
  of 
  the 
  various 
  species 
  of 
  Glossina 
  and 
  would, 
  therefore, 
  refer 
  the 
  

   reader 
  to 
  these 
  ; 
  especially 
  that 
  on 
  S. 
  Nigeria.* 
  The 
  conclusions 
  arrived 
  at 
  

   with 
  regard 
  to 
  Nigeria 
  are 
  found 
  to 
  be 
  equally 
  applicable 
  to 
  the 
  Gold 
  Coast. 
  

  

  In 
  the 
  narrative 
  (Chapter 
  III) 
  a 
  few 
  notes 
  on 
  the 
  association 
  of 
  tsetse 
  and 
  game 
  

   have 
  been 
  recorded, 
  but 
  it 
  might 
  be 
  well 
  to 
  state 
  here 
  that 
  from 
  observations 
  made 
  

   in 
  a 
  small 
  area 
  during 
  a 
  short 
  period, 
  I 
  am 
  strongly 
  inclined 
  to 
  think 
  that 
  there 
  is 
  a 
  

  

  * 
  Bull. 
  Ent. 
  Res. 
  iii, 
  pp. 
  189-191 
  (1912). 
  

  

  