﻿270 
  PROF. 
  M. 
  BEZZI. 
  

  

  the 
  wing 
  there 
  are 
  : 
  (1) 
  the 
  blackish 
  patches, 
  two 
  of 
  which 
  more 
  striking 
  

   and 
  more 
  defined 
  are 
  of 
  subquadrate 
  shape 
  and 
  placed 
  one 
  in 
  the 
  submarginal 
  

   cell 
  before 
  the 
  small 
  cross- 
  vein, 
  and 
  the 
  other 
  near 
  the 
  base 
  of 
  the 
  first 
  posterior 
  

   cell, 
  just 
  above 
  the 
  upper 
  end 
  of 
  the 
  hind 
  cross- 
  vein 
  ; 
  (2) 
  the 
  shining 
  " 
  bullae," 
  

   the 
  more 
  distinct 
  of 
  them 
  being 
  placed 
  around 
  the 
  small 
  cross-vein 
  at 
  unequal 
  

   distances 
  to 
  form 
  a 
  kind 
  of 
  circle 
  : 
  one 
  in 
  the 
  first 
  basal, 
  one 
  in 
  the 
  submarginal 
  

   just 
  above 
  the 
  small 
  cross-vein, 
  two 
  in 
  the 
  first 
  posterior 
  above 
  and 
  in 
  front 
  of 
  the 
  

   black 
  spot, 
  and 
  one 
  in 
  the 
  discoidal 
  cell, 
  at 
  some 
  distance 
  below 
  the 
  above-named 
  

   black 
  spot. 
  There 
  are 
  moreover 
  some 
  other 
  " 
  bullae," 
  one 
  at 
  the 
  extreme 
  base 
  

   of 
  the 
  submarginal 
  cell, 
  and 
  one 
  at 
  the 
  extreme 
  base 
  of 
  the 
  discoidal 
  cell 
  extending 
  

   into 
  the 
  end 
  of 
  the 
  2nd 
  basal 
  cell. 
  The 
  3rd 
  posterior 
  cell 
  and 
  the 
  axillary 
  lobe 
  

   are 
  entirely 
  and 
  evenly 
  infuscated 
  and 
  show 
  some 
  hyaline 
  spots 
  forming 
  a 
  kind 
  of 
  

   reticulation 
  ; 
  9 
  of 
  these 
  spots 
  are 
  placed 
  into 
  the 
  axillary 
  cell, 
  4 
  above 
  and 
  5 
  below 
  

   the 
  axillary 
  vein, 
  and 
  7-8 
  are 
  placed 
  in 
  the 
  3rd 
  posterior 
  cell, 
  those 
  near 
  the 
  apex 
  

   being 
  more 
  stripe-like. 
  The 
  hyaline 
  parts 
  of 
  the 
  stigma 
  are 
  colourless, 
  like 
  the 
  

   corresponding 
  ones 
  of 
  the 
  2nd 
  costal 
  or 
  marginal 
  cells. 
  The 
  basal 
  and 
  anal 
  cells 
  

   are 
  infuscated 
  to 
  the 
  base, 
  only 
  the 
  extreme 
  base 
  of 
  wing 
  and 
  the 
  alula 
  being 
  greyish 
  

   hyaline. 
  

  

  Type 
  (J, 
  a 
  single 
  partly 
  damaged 
  specimen 
  from 
  Natal, 
  Port 
  Shepstone, 
  v. 
  1897 
  : 
  

   another 
  of 
  the 
  interesting 
  discoveries 
  of 
  Dr. 
  G. 
  A. 
  K. 
  Marshall, 
  in 
  whose 
  honour 
  

   the 
  species 
  is 
  named. 
  

  

  Rhabdochaeta 
  neavei, 
  sp. 
  nov. 
  

  

  About 
  the 
  same 
  as 
  R. 
  spinosa, 
  Lamb, 
  from 
  the 
  Seychelles, 
  but 
  seeming 
  to 
  differ 
  

   in 
  the 
  wing 
  pattern, 
  which 
  is 
  yellowish 
  brown, 
  not 
  black, 
  and 
  shows 
  therefore 
  

   a 
  very 
  remarkable 
  deep 
  black 
  spot 
  at 
  the 
  base 
  of 
  the 
  first 
  posterior 
  cell, 
  j 
  ust 
  beyond 
  

   the 
  small 
  cross- 
  vein. 
  

  

  ?. 
  Length 
  of 
  body 
  2*2 
  mm. 
  ; 
  of 
  ovipositor 
  0*8 
  mm. 
  ; 
  of 
  wing 
  3 
  mm. 
  

  

  Head 
  yellowish, 
  with 
  the 
  occiput 
  darkened 
  towards 
  the 
  middle 
  ; 
  frons 
  yellow 
  

   on 
  the 
  apical 
  half, 
  with 
  whitish 
  orbits 
  and 
  a 
  blackish 
  ocellar 
  dot 
  ; 
  cheeks 
  whitish, 
  

   with 
  a 
  small, 
  rounded, 
  rather 
  prominent, 
  deep 
  black 
  dot 
  above, 
  between 
  the 
  root 
  

   of 
  the 
  antenna 
  and 
  the 
  eye 
  ; 
  face 
  whitish, 
  with 
  a 
  brown 
  transverse 
  band 
  above 
  

   the 
  mouth-border 
  ; 
  jowls 
  very 
  narrow 
  and 
  unspotted. 
  Antennae 
  pale 
  yellowish 
  

   at 
  base, 
  with 
  the 
  3rd 
  joint 
  more 
  yellow, 
  very 
  attenuated 
  and 
  very 
  acute 
  at 
  the 
  

   end 
  ; 
  arista 
  whitish, 
  shortly 
  pubescent. 
  Palpi 
  and 
  proboscis 
  dirty 
  yellowish. 
  

   Middle 
  frontal 
  stripe 
  bare, 
  but 
  with 
  a 
  pair 
  of 
  white 
  bristles 
  in 
  the 
  middle. 
  

   Cephalic 
  bristles 
  pale 
  yellowish, 
  the 
  or. 
  and 
  the 
  inner 
  vt. 
  darkish 
  at 
  base 
  ; 
  those 
  

   of 
  the 
  hind 
  border 
  are 
  whitish 
  ; 
  two 
  s. 
  or. 
  and 
  three 
  i. 
  or., 
  counting 
  that 
  placed 
  

   far 
  in 
  front, 
  just 
  above 
  the 
  black 
  dot 
  of 
  the 
  cheeks 
  ; 
  the 
  stout 
  short 
  hairs 
  of 
  the 
  

   lower 
  part 
  of 
  the 
  occiput 
  are 
  whitish. 
  Thorax 
  black 
  in 
  ground-colour, 
  but 
  

   densely 
  clothed 
  with 
  grey 
  dust, 
  which 
  is 
  darker 
  on 
  the 
  pleurae 
  ; 
  humeri 
  and 
  

   notopleural 
  region 
  yellowish 
  ; 
  on 
  the 
  back 
  there 
  are 
  distinct 
  black 
  spots 
  on 
  the 
  

   points 
  of 
  insertion 
  of 
  the 
  macrochaetae, 
  those 
  of 
  the 
  jprsct. 
  being 
  the 
  most 
  developed 
  ; 
  

   the 
  short 
  hairs 
  are 
  pale 
  yellowish 
  ; 
  the 
  dorsal 
  macrochaetae 
  are 
  distinctly 
  blackened 
  

   at 
  the 
  extreme 
  base, 
  but 
  are 
  elsewhere 
  yellowish 
  ; 
  the 
  pleural 
  macrochaetae 
  are 
  

  

  