﻿256 
  PEOF. 
  M. 
  BEZZI. 
  

  

  A 
  couple 
  of 
  specimens 
  from 
  Uganda 
  Protectorate, 
  Entebbe 
  (Forest), 
  3,800 
  feet, 
  

   5-ll.vii.1911 
  (S. 
  A. 
  Neave). 
  

  

  Aciura 
  tetrachaeta, 
  Bezzi 
  (1918). 
  

  

  Of 
  this 
  characteristic 
  species, 
  described 
  from 
  N. 
  W. 
  Rhodesia, 
  there 
  is 
  a 
  couple 
  

   of 
  specimens 
  from 
  Natal, 
  Estcourt, 
  ix.-x. 
  1898, 
  and 
  Malvern, 
  1897 
  (67. 
  A. 
  K. 
  Marshall). 
  

  

  The 
  as 
  yet 
  undescribed 
  male 
  is 
  very 
  like 
  the 
  female 
  ; 
  its 
  abdomen 
  is 
  obtuse 
  at 
  

   the 
  end, 
  and 
  the 
  genitalia 
  are 
  black. 
  The 
  pubescence 
  of 
  the 
  back 
  of 
  the 
  thorax 
  

   is 
  yellowish, 
  and 
  the 
  bristles 
  are 
  likewise 
  yellowish 
  but 
  more 
  or 
  less 
  infuscated, 
  

   those 
  of 
  the 
  pleurae 
  being 
  black. 
  The 
  front 
  femora 
  are 
  yellow 
  on 
  the 
  inner 
  side 
  

   and 
  bear 
  four 
  long 
  bristles 
  beneath. 
  The 
  greyish 
  shade 
  in 
  the 
  middle 
  of 
  the 
  first 
  

   or 
  basal 
  indentation 
  of 
  the 
  hind 
  border 
  is 
  not 
  distinct 
  in 
  the 
  present 
  specimens. 
  

  

  Spheniscomyia 
  Bezzi, 
  1913. 
  

   I 
  place 
  in 
  this 
  genus 
  a 
  new 
  species, 
  which 
  is 
  rather 
  aberrant 
  in 
  lacking 
  the 
  a, 
  set. 
  ; 
  

   but 
  in 
  size, 
  in 
  the 
  chaetotactic 
  characters 
  of 
  the 
  head, 
  the 
  black 
  oep., 
  the 
  form 
  of 
  

   the 
  scutellum 
  and 
  in 
  the 
  faint 
  dust 
  of 
  the 
  thorax, 
  it 
  agrees 
  with 
  the 
  typical 
  species. 
  

   On 
  account 
  of 
  these 
  characters, 
  it 
  is 
  very 
  different 
  from 
  the 
  Ethiopian 
  species 
  which 
  

   form 
  the 
  very 
  homogeneous 
  group 
  of 
  Tephrella 
  dealt 
  with 
  by 
  me 
  in 
  the 
  preceding 
  

   paper. 
  

  

  Spheniscomyia 
  sexmaculata, 
  Macquart 
  (1843). 
  

  

  Of 
  this 
  common 
  species 
  there 
  is 
  a 
  male 
  specimen 
  from 
  Nyasaland, 
  Mt. 
  Mlanje, 
  

   4.vii.l913 
  (S. 
  A. 
  Neave), 
  and 
  another 
  from 
  Natal, 
  Port 
  Shepstone, 
  v. 
  1897 
  (67. 
  A. 
  K. 
  

   Marshall). 
  

  

  Spheniscomyia 
  neavei, 
  sp. 
  nov. 
  (PL 
  xviii, 
  fig. 
  6). 
  

  

  A 
  pretty 
  species 
  very 
  distinct 
  from 
  any 
  other 
  in 
  having 
  no 
  set. 
  and 
  in 
  having 
  

   two 
  hyaline 
  indentations 
  at 
  the 
  fore 
  border 
  of 
  the 
  wing. 
  It 
  is 
  possible 
  that 
  

   A. 
  capensis, 
  Rond., 
  which 
  is 
  described 
  with 
  a 
  similar 
  wing 
  pattern, 
  belongs 
  to 
  the 
  

   same 
  natural 
  group 
  as 
  the 
  present 
  species. 
  

  

  (J 
  5. 
  Length 
  of 
  body 
  2*3-2 
  '5 
  mm. 
  ; 
  of 
  ovipositor 
  about 
  1 
  mm. 
  ; 
  of 
  wing 
  3-3*1 
  

   mm. 
  

  

  Occiput 
  entirely 
  black, 
  but 
  clothed 
  with 
  rather 
  dense, 
  dark 
  grey 
  dust 
  ; 
  frons 
  

   reddish, 
  with 
  whitish 
  orbits 
  and 
  black, 
  but 
  densely 
  grey-dusted 
  ocellar 
  and 
  orbital 
  

   plates 
  ; 
  lunula 
  whitish, 
  like 
  the 
  linear 
  cheeks 
  ; 
  face 
  yellowish, 
  with 
  whitish 
  dust 
  ; 
  

   jowls 
  very 
  narrow, 
  reddish, 
  not 
  spotted. 
  Antennae 
  entirely 
  reddish 
  yellow, 
  with 
  

   a 
  shortly 
  pubescent 
  arista. 
  Palpi 
  and 
  proboscis 
  pale 
  yellowish. 
  All 
  the 
  cephalic 
  

   bristles 
  are 
  black, 
  even 
  those 
  of 
  the 
  occipital 
  row 
  ; 
  oc. 
  well 
  developed 
  ; 
  two 
  strong 
  

   i. 
  or. 
  ; 
  genal 
  bristle 
  well 
  developed. 
  Thorax 
  and 
  scutellum 
  entirely 
  black 
  and 
  rather 
  

   shining, 
  the 
  greyish 
  dust 
  of 
  the 
  back 
  being 
  very 
  faint 
  and 
  even 
  wanting 
  on 
  the 
  

   scutellum 
  ; 
  the 
  bristles 
  are 
  black 
  ; 
  dc. 
  placed 
  on 
  the 
  line 
  of 
  the 
  a. 
  sa. 
  ; 
  one 
  mpl. 
  ; 
  

   pt. 
  above 
  as 
  developed 
  as 
  the 
  st. 
  ; 
  no 
  a. 
  set., 
  the 
  b. 
  set. 
  being 
  very 
  long 
  but 
  not 
  

   diverging. 
  The 
  short 
  pubescence 
  of 
  the 
  back 
  of 
  the 
  mesonotum 
  is 
  black, 
  like 
  the 
  

   rather 
  sparse 
  hairs 
  of 
  the 
  scutellum. 
  Mesophragma 
  shining 
  black 
  ; 
  scutellum 
  

   broader 
  than 
  long 
  and 
  rather 
  convex. 
  Squamulae 
  white 
  ; 
  halteres 
  pale 
  yellowish. 
  

  

  