﻿NOTES 
  ON 
  THE 
  ETHIOPIAN 
  FRUIT 
  FLIES, 
  OTHER 
  THAN 
  DACUS. 
  269 
  

  

  yellowish 
  on 
  the 
  sides 
  and 
  below 
  ; 
  the 
  b. 
  set. 
  are 
  very 
  long, 
  pale 
  yellowish, 
  with 
  a 
  

   black 
  base, 
  and 
  are 
  inserted 
  on 
  a 
  small 
  black 
  dot 
  ; 
  the 
  a. 
  set. 
  are 
  wanting 
  in 
  the 
  

   type. 
  Postscutellum 
  and 
  mesophragma 
  blackish, 
  grey-dusted. 
  Halteres 
  with 
  

   yellowish 
  stalk 
  and 
  blackish 
  knob. 
  Abdomen 
  reddish, 
  with 
  pale 
  grey 
  dust 
  ; 
  each 
  

   segment 
  bears 
  on 
  each 
  side 
  a 
  very 
  broad, 
  brown 
  spot, 
  which 
  is 
  rectangular 
  in 
  shape 
  

   on 
  the 
  three 
  basal 
  segments, 
  while 
  it 
  is 
  subquadrate 
  on 
  the 
  fourth 
  ; 
  it 
  could 
  be 
  

   said 
  that 
  each 
  segment 
  is 
  brown, 
  with 
  a 
  narrow 
  whitish 
  hind 
  border 
  and 
  a 
  whitish 
  

   middle 
  line 
  ; 
  each 
  segment 
  bears 
  moreover 
  on 
  the 
  sides, 
  in 
  the 
  whitish 
  portion, 
  

   a 
  smaller 
  dark 
  spot, 
  and 
  the 
  4th 
  segment 
  is 
  broadly 
  yellow 
  at 
  the 
  hind 
  border. 
  

   The 
  entire 
  abdomen 
  seems 
  to 
  be 
  bare, 
  with 
  only 
  a 
  few 
  scattered 
  short 
  black 
  hairs 
  

   on 
  the 
  sides 
  of 
  the 
  segments, 
  chiefly 
  of 
  the 
  last 
  one, 
  which 
  bears 
  

   moreover 
  8-10 
  not 
  long 
  but 
  strong, 
  black 
  bristles 
  at 
  the 
  hind 
  border 
  and 
  on 
  

   the 
  sides. 
  Genitalia 
  reddish 
  yellow 
  ; 
  venter 
  entirely 
  reddish, 
  with 
  whitish 
  dust 
  

   and 
  sparse 
  whitish 
  hairs. 
  Legs 
  entirely 
  pale 
  yellowish, 
  even 
  to 
  the 
  end 
  of 
  the 
  

   tarsi, 
  but 
  each 
  femur 
  is 
  adorned 
  below 
  with 
  two 
  rounded 
  dark 
  spots, 
  one 
  near 
  the 
  

   base, 
  the 
  other 
  towards 
  the 
  middle 
  ; 
  the 
  hairs 
  and 
  bristles 
  of 
  the 
  front 
  femora 
  

   are 
  pale 
  yellowish, 
  while 
  the 
  posterior 
  femora 
  have 
  blackish 
  pubescence 
  and 
  some 
  

   dark 
  bristles 
  at 
  the 
  end 
  above 
  ; 
  middle 
  tibiae 
  with 
  a 
  dark 
  spur. 
  The 
  wing 
  veins 
  

   are 
  yellow 
  but 
  darkened 
  on 
  the 
  darker 
  parts 
  of 
  the 
  pattern, 
  and 
  more 
  strikingly 
  

   on 
  the 
  costa, 
  which 
  is 
  alternatively 
  black 
  and 
  yellow. 
  The 
  short 
  costal 
  bristles 
  

   near 
  the 
  humeral 
  cross-vein 
  are 
  yellowish, 
  while 
  the 
  two 
  costal 
  bristles 
  at 
  the 
  

   stigma 
  are 
  black, 
  like 
  the 
  bristles 
  on 
  the 
  1st 
  and 
  3rd 
  longitudinal 
  veins. 
  The 
  

   pattern 
  is 
  brownish, 
  more 
  blackish 
  at 
  the 
  end 
  of 
  the 
  rays 
  of 
  the 
  fore 
  border 
  and 
  

   on 
  several 
  of 
  the 
  central 
  spots 
  ; 
  the 
  membrane 
  is 
  iridescent, 
  quite 
  hyaline 
  on 
  the 
  

   fore 
  border 
  and 
  at 
  the 
  apex, 
  while 
  the 
  hyaline 
  spots 
  of 
  the 
  hind 
  border 
  are 
  more 
  

   whitish. 
  The 
  radiating 
  part 
  shows 
  the 
  following 
  dark 
  rays, 
  which 
  become 
  

   progressively 
  longer 
  from 
  the 
  base 
  to 
  the 
  apex 
  of 
  the 
  wing 
  ; 
  one 
  at 
  the 
  extreme 
  

   base 
  of 
  the 
  first 
  costal 
  cell 
  ; 
  one 
  like 
  a 
  narrow 
  border 
  of 
  the 
  humeral 
  cross- 
  vein 
  ; 
  

   two 
  in 
  the 
  second 
  costal 
  cell, 
  one 
  broader 
  near 
  the 
  base, 
  and 
  one 
  narrower 
  bufc 
  

   darker 
  beyond 
  the 
  middle 
  ; 
  one 
  narrow 
  and 
  greyish 
  along 
  the 
  diffuse 
  terminal 
  

   part 
  of 
  the 
  auxiliary 
  vein 
  ; 
  three 
  blackish, 
  close 
  together 
  and 
  very 
  marked 
  on 
  

   the 
  stigma, 
  the 
  first 
  and 
  broadest 
  of 
  all 
  at 
  the 
  base, 
  the 
  second 
  in 
  the 
  middle, 
  the 
  

   third 
  and 
  narrowest 
  along 
  the 
  terminal 
  part 
  of 
  the 
  first 
  vein. 
  In 
  contact 
  with 
  

   the 
  last 
  of 
  these 
  rays 
  there 
  is 
  a 
  broader 
  triangular 
  greyish 
  ray 
  departing 
  from 
  the 
  

   fuscous 
  base 
  of 
  the 
  marginal 
  cell 
  and 
  showing 
  some 
  small, 
  subhyaline, 
  whitish 
  

   streaks 
  on 
  its 
  base. 
  This 
  ray 
  is 
  followed 
  by 
  two 
  other 
  parallel 
  rays 
  at 
  equal 
  

   distances 
  in 
  the 
  marginal 
  cell 
  itself 
  ; 
  these 
  two 
  rays 
  are 
  narrower 
  and 
  bent 
  a 
  little 
  

   outwardly, 
  and 
  have 
  their 
  central 
  stripes 
  whitish 
  hyaline. 
  There 
  are 
  subsequently 
  

   two 
  dark 
  rays 
  in 
  the 
  submarginal 
  cell, 
  narrow 
  and 
  full, 
  one 
  ending 
  at 
  the 
  end 
  of 
  

   the 
  second 
  vein, 
  the 
  other 
  ending 
  at 
  middle 
  of 
  the 
  distance 
  between 
  the 
  tips 
  of 
  the 
  

   2nd 
  and 
  3rd 
  veins 
  ; 
  the 
  1st 
  posterior 
  cell 
  has 
  likewise 
  two 
  narrow 
  rays 
  which 
  

   follow 
  exactly 
  the 
  two 
  external 
  branches 
  of 
  the 
  cubital 
  fork, 
  ending 
  at 
  the 
  tips 
  

   of 
  the 
  3rd 
  and 
  4th 
  veins 
  ; 
  the 
  2nd 
  posterior 
  cell 
  has 
  the 
  last 
  three 
  rays, 
  which 
  are 
  

   less 
  sharply 
  denned, 
  the 
  last 
  one 
  being 
  even 
  hardly 
  distinguishable 
  from 
  

   the 
  dark 
  patch 
  ; 
  they 
  are 
  more 
  irregular 
  and 
  sinuous 
  and 
  enclose 
  two 
  

   small, 
  hyaline 
  spots 
  and 
  a 
  hyaline 
  streak 
  at 
  the 
  base. 
  On 
  the 
  disc 
  of 
  

  

  