﻿290 
  MAJOR 
  E. 
  E. 
  AUSTEN. 
  

  

  segment 
  of 
  the 
  antenna 
  being 
  much 
  stouter. 
  It 
  may 
  be 
  added 
  that 
  what 
  Walker 
  

   (loc. 
  cit.) 
  calls 
  a 
  third 
  frontal 
  callus 
  is 
  merely 
  a 
  flat, 
  semi-shining 
  and 
  partially 
  

   denuded 
  area 
  in 
  the 
  ocellar 
  region 
  of 
  the 
  vertex. 
  

  

  Although 
  this 
  individual 
  may 
  well 
  represent 
  an 
  undescribed 
  species, 
  it 
  seems 
  

   advisable 
  in 
  view 
  of 
  its 
  age 
  and 
  sundry 
  imperfections 
  (including 
  a 
  partly 
  denuded 
  

   thorax, 
  and 
  the 
  fact 
  that 
  the 
  middle 
  legs 
  are 
  missing 
  and 
  the 
  others 
  more 
  or 
  less 
  

   damaged) 
  to 
  await 
  the 
  arrival 
  of 
  further 
  material 
  before 
  supplying 
  it 
  with 
  a 
  trivial 
  

   name. 
  

  

  Tabanus 
  sufis, 
  Jaenn. 
  

  

  One 
  $, 
  one 
  $, 
  Nasiryeh, 
  R. 
  Euphrates, 
  March- 
  June 
  1916 
  {Major 
  W. 
  S. 
  Pattori). 
  

  

  This 
  small 
  species, 
  the 
  type 
  of 
  which 
  was 
  obtained 
  in 
  Nubia, 
  has 
  a 
  wide 
  range 
  

   which, 
  as 
  shown 
  by 
  specimens 
  in 
  the 
  British 
  Museum 
  (Natural 
  History), 
  extends 
  

   right 
  across 
  Africa 
  ; 
  besides 
  occurring 
  in 
  Kenya 
  Colony 
  and 
  the 
  Egyptian 
  Sudan, 
  

   T. 
  sufis 
  is 
  found 
  so 
  far 
  west 
  as 
  Northern 
  Nigeria. 
  

  

  Tabanus 
  sp. 
  incert. 
  (allied 
  to 
  T. 
  sufis, 
  Jaenn.). 
  

  

  Two 
  2$, 
  Fao, 
  Persian 
  Gulf, 
  29.iv.1892 
  (W. 
  D. 
  Gumming). 
  

  

  The 
  above-mentioned 
  specimens, 
  which 
  measure 
  from 
  10 
  to 
  11 
  mm. 
  in 
  length, 
  

   very 
  possibly 
  represent 
  a 
  local 
  race 
  of 
  T. 
  gerkei, 
  Brauer, 
  from 
  which 
  they 
  are 
  dis- 
  

   tinguished 
  chiefly 
  by 
  the 
  ground-colour 
  of 
  the 
  abdomen 
  and 
  femora 
  being 
  pale. 
  

   While 
  presenting 
  an 
  unmistakable 
  general 
  resemblance 
  to 
  T. 
  sufis, 
  Jaenn., 
  with 
  

   which 
  they 
  agree 
  in 
  the 
  shape 
  and 
  dimensions 
  of 
  the 
  2 
  front, 
  they 
  are 
  distinguishable 
  

   from 
  that 
  species, 
  inter 
  alia, 
  by 
  the 
  upper 
  border 
  of 
  the 
  occiput 
  being 
  considerably 
  

   swollen 
  and 
  much 
  broader, 
  and 
  by 
  the 
  wing-veins 
  or 
  portions 
  of 
  wing-veins 
  — 
  such 
  

   as 
  the 
  anterior 
  transverse 
  vein, 
  base 
  of 
  the 
  anterior 
  branch 
  of 
  the 
  third 
  longitudinal 
  

   vein, 
  etc. 
  — 
  that 
  are 
  conspicuously 
  darkened 
  in 
  the 
  case 
  of 
  T. 
  sufis, 
  showing 
  little 
  

   or 
  only 
  a 
  very 
  slight 
  trace 
  of 
  infuscation. 
  As 
  in 
  T. 
  sufis, 
  the 
  anterior 
  branch 
  of 
  

   the 
  third 
  longitudinal 
  vein 
  is 
  provided 
  with 
  a 
  well-marked 
  appendix, 
  which 
  appears 
  

   to 
  vary 
  in 
  length 
  in 
  different 
  individuals. 
  

  

  It 
  may 
  be 
  added 
  that 
  the 
  typical 
  form 
  of 
  T. 
  gerkei, 
  Brauer, 
  would 
  appear 
  to 
  extend 
  

   right 
  across 
  Russia 
  from 
  south 
  to 
  north, 
  since, 
  according 
  to 
  Brauer 
  (Denkschr. 
  K. 
  

   Akad. 
  Wiss., 
  math.-naturw. 
  CI., 
  Wien, 
  xlii, 
  p. 
  205, 
  1880), 
  it 
  is 
  found 
  in 
  South 
  Russia 
  

   and 
  the 
  Caucasus, 
  while 
  the 
  British 
  Museum 
  possesses 
  a 
  specimen 
  from 
  Finland. 
  

  

  