﻿158 
  MAJOR 
  E. 
  E. 
  AUSTEN. 
  

  

  visible, 
  even 
  on 
  seventh 
  sternite. 
  Wings 
  somewhat 
  dusky 
  (lightly 
  tinged 
  with 
  sepia, 
  

   and, 
  at 
  least 
  in 
  case 
  of 
  type, 
  membrane 
  adjoining 
  majority 
  of 
  veins 
  in 
  distal 
  halves 
  

   faintly 
  suffused 
  with 
  a 
  slightly 
  darker 
  shade 
  of 
  same 
  colour) 
  ; 
  veins 
  for 
  most 
  part 
  

   mummy-brown, 
  in 
  certain 
  cases 
  such 
  as 
  auxiliary 
  (mediastinal), 
  first 
  longitudinal, 
  

   and 
  proximal 
  portions 
  of 
  second, 
  third 
  and 
  fifth 
  longitudinal 
  veins 
  paler 
  (ochraceous- 
  

   tawny) 
  ; 
  anterior 
  transverse 
  vein, 
  and 
  basal 
  portion 
  of 
  anterior 
  branch 
  of 
  fifth 
  

   longitudinal 
  vein 
  appearing 
  darker 
  than 
  veins 
  elsewhere 
  ; 
  stigma 
  ochraceous-buff, 
  

   elongate, 
  well 
  defined 
  and 
  fairly 
  conspicuous. 
  Squamae 
  drab-grey, 
  with 
  cream- 
  

   coloured 
  borders 
  fringed 
  with 
  pale 
  yellowish 
  hair. 
  Halteres 
  : 
  knobs 
  blackish-brown, 
  

   stalks 
  paler 
  (dark 
  olive-brown). 
  Legs 
  : 
  coxae 
  and 
  trochanters 
  smoke-grey 
  or 
  mouse- 
  

   grey 
  pollinose, 
  clothed 
  (densely 
  in 
  case 
  of 
  front 
  coxae) 
  with 
  hair 
  similar 
  to 
  that 
  on 
  

   pleurae, 
  traces 
  of 
  cinnamon 
  ground-colour 
  showing 
  through 
  pollinose 
  covering 
  in 
  case 
  

   of 
  front 
  coxae 
  ; 
  extreme 
  bases 
  of 
  femora, 
  at 
  least 
  on 
  underside, 
  mouse-grey 
  or 
  deep 
  

   mouse-grey, 
  hind 
  femora 
  also 
  with 
  a 
  deep 
  mouse-grey 
  pollinose 
  streak 
  extending 
  

   from 
  base 
  a 
  very 
  short 
  distance 
  along 
  middle 
  of 
  outer 
  side, 
  femora 
  and 
  tibiae 
  clothed 
  

   with 
  glistening 
  cream-buff 
  hair 
  ; 
  last 
  three 
  segments 
  of 
  front 
  and 
  middle 
  tarsi 
  

   (except 
  at 
  base), 
  and 
  last 
  segment 
  of 
  hind 
  tarsi 
  blackish-brown, 
  remaining 
  tarsal 
  

   segments 
  tipped 
  with 
  dark 
  brown 
  ; 
  distal 
  segments 
  of 
  front 
  tarsi 
  only 
  moderately 
  

   expanded. 
  

  

  Wadi 
  Sikat 
  (Ramleh 
  district), 
  3.xi.l921 
  {Colonel 
  Fulton, 
  A.A.M.C, 
  per 
  P. 
  A. 
  

   Buxton). 
  

  

  Tabanus 
  agnitionalis 
  , 
  which 
  cannot 
  be 
  confused 
  with 
  any 
  species 
  included 
  in 
  the 
  

   author's 
  previous 
  paper 
  on 
  Palestine 
  Tabanidae,* 
  is 
  certainly, 
  so 
  far 
  as 
  can 
  be 
  

   judged 
  from 
  Macquart's 
  brief 
  description 
  (Mem. 
  Soc. 
  roy. 
  des 
  Sc, 
  de 
  l'Agric. 
  et 
  des 
  

   Arts 
  de 
  Lille, 
  1838, 
  p. 
  298. 
  Lille 
  : 
  1838), 
  distinct 
  from 
  the 
  Arabian 
  T. 
  arabicus, 
  

   Macq., 
  with 
  which 
  it 
  agrees 
  more 
  or 
  less 
  in 
  size, 
  in 
  the 
  coloration 
  of 
  the 
  antennae 
  

   and 
  legs, 
  and 
  in 
  the 
  dorsum 
  of 
  the 
  thorax 
  being 
  marked 
  with 
  light 
  stripes. 
  Macquart, 
  

   however, 
  while 
  giving 
  no 
  indication 
  that 
  the 
  eyes 
  in 
  T. 
  arabicus 
  are 
  hairy, 
  states 
  that 
  

   the 
  palpi 
  in 
  this 
  species 
  are 
  yellowish-white, 
  and 
  the 
  halteres 
  yeUow. 
  

  

  From 
  Tabanus 
  graecus, 
  Fabr., 
  which 
  T. 
  arabicus 
  is 
  stated 
  by 
  Macquart 
  to 
  resemble, 
  

   the 
  species 
  described 
  above 
  is 
  distinguishable 
  in 
  the 
  $ 
  sex 
  by 
  its 
  conspicuously 
  

   hairy 
  eyes, 
  broader 
  front 
  and 
  very 
  differently 
  shaped 
  frontal 
  caUus, 
  as 
  well 
  as 
  by 
  the 
  

   ventral 
  surface 
  of 
  the 
  abdomen 
  being 
  uniformly 
  pale 
  (pinkish-cinnamon), 
  instead 
  of 
  

   having 
  a 
  dark 
  median 
  blotch 
  at 
  the 
  base 
  of 
  the 
  second 
  (visible) 
  segment, 
  and 
  the 
  last 
  

   four 
  scutes 
  (except 
  their 
  hind 
  margins) 
  olivaceous-black 
  ; 
  finally, 
  the 
  new 
  species 
  

   may 
  be 
  distinguished 
  from 
  T. 
  graecus 
  by 
  the 
  femora, 
  except 
  their 
  extreme 
  bases, 
  

   being 
  cinnamon-coloured 
  instead 
  of 
  blackish 
  mouse-grey. 
  

  

  Tabanus 
  decorus, 
  Lw. 
  

  

  One 
  <J, 
  one 
  ?, 
  Nahr 
  Rubin 
  (coastal 
  zone), 
  5, 
  25.iv.1921 
  (/. 
  Aharoni) 
  ; 
  one 
  ?, 
  

   Jisr 
  Banat 
  Yakub, 
  Galilee, 
  5.iv.l922, 
  and 
  one 
  $, 
  Wadi 
  Hamam, 
  Galilee, 
  7.iv.l922 
  

   (P. 
  A. 
  Buxton). 
  

  

  Tabanus 
  alexandrinus, 
  Wied. 
  

  

  Cf. 
  Austen, 
  Bull. 
  Ent. 
  Res., 
  x, 
  p. 
  295, 
  and 
  p. 
  298, 
  fig. 
  5 
  (April 
  1920). 
  

   Two 
  S 
  3, 
  Rehoboth 
  (Jaffa 
  district), 
  26.iv.1916 
  and 
  26.iv.1921 
  (/. 
  Aharoni). 
  

  

  Tabanus 
  insecutor, 
  Austen. 
  

  

  Tabanus 
  insecutor, 
  Austen, 
  Bull. 
  Ent. 
  Res., 
  x, 
  p. 
  296, 
  fig. 
  6 
  (April 
  1920). 
  

  

  One 
  $, 
  Haifa, 
  17.V.1921 
  (P. 
  A. 
  Buxton). 
  

  

  The 
  type 
  of 
  T. 
  insecutor 
  — 
  the 
  only 
  other 
  specimen 
  of 
  this 
  species 
  hitherto 
  obtained 
  

   — 
  was 
  taken 
  near 
  Mulebbis 
  (Jaffa 
  district), 
  14. 
  v. 
  1918, 
  in 
  pursuit 
  of 
  a 
  fast-travelling 
  

   motor-car. 
  

  

  * 
  Cf. 
  Bull. 
  Ent. 
  Res., 
  x, 
  p. 
  293 
  (1920). 
  

  

  