﻿CONTRIBUTION 
  TO 
  KNOWLEDGE 
  OF 
  TABANIDAE 
  OF 
  PALESTINE. 
  311 
  

  

  hair 
  ; 
  venter 
  pale 
  smoke 
  grey 
  or 
  pale 
  drab-grey 
  pollinose, 
  clothed 
  with 
  minute, 
  

   appressed, 
  glistening, 
  ivory 
  yellow 
  hairs, 
  hind 
  borders 
  of 
  second 
  to 
  sixth 
  scutes 
  

   inclusive 
  ivory 
  yellow, 
  seventh 
  segment 
  deep 
  greyish 
  olive 
  or 
  mouse 
  grey 
  pollinose, 
  

   clothed 
  with 
  usual 
  coarse, 
  erect, 
  blackish 
  hair. 
  Wings 
  : 
  clear, 
  hyaline, 
  veins 
  lighter 
  

   or 
  darker 
  olive-brown, 
  anterior 
  branch 
  of 
  third 
  longitudinal 
  vein 
  without 
  an 
  

   appendix, 
  at 
  least 
  in 
  typical 
  form 
  ; 
  stigma 
  pale 
  isabella-coloured 
  or 
  almost 
  colourless, 
  

   inconspicuous. 
  Squamae 
  ivory 
  yellow, 
  borders 
  cream-buff. 
  Halteres 
  : 
  knobs 
  

   ivory 
  yellow, 
  stalks 
  pale 
  cream-buff. 
  Legs 
  : 
  coxae 
  smoke 
  grey 
  or 
  pale 
  smoke 
  grey 
  

   pollinose, 
  clothed 
  with 
  whitish 
  hair 
  ; 
  femora, 
  except 
  tips 
  which 
  are 
  cream-buff, 
  

   light 
  greyish 
  olive 
  or 
  smoke 
  grey 
  pollinose, 
  clothed 
  with 
  whitish 
  hair 
  (extreme 
  

   tips, 
  at 
  least 
  of 
  front 
  and 
  middle 
  femora, 
  with 
  minute 
  black 
  hairs 
  above), 
  inner 
  and 
  

   under 
  sides 
  of 
  front 
  femora 
  blackish 
  brown 
  or 
  warm 
  sepia-coloured, 
  inner 
  sides 
  

   more 
  or 
  less 
  smoke 
  grey 
  pollinose 
  ; 
  tibiae 
  cream-buff, 
  tips 
  (distal 
  sixth 
  in 
  case 
  of 
  

   middle 
  and 
  hind 
  pairs, 
  distal 
  fourth 
  or 
  rather 
  less 
  in 
  case 
  of 
  front 
  pair) 
  blackish 
  

   brown 
  or 
  dove 
  brown, 
  pale 
  area 
  of 
  tibiae 
  clothed 
  with 
  minute, 
  appressed, 
  glistening 
  

   ivory 
  yellow 
  hairs, 
  mingled 
  on 
  extensor 
  surfaces 
  with 
  minute 
  black 
  hairs 
  ; 
  front 
  

  

  Fig. 
  12. 
  Tabanus 
  accensus, 
  Austen, 
  head 
  of 
  $ 
  

  

  from 
  in 
  front, 
  x 
  10; 
  a, 
  antenna 
  from 
  the 
  side, 
  

  

  greatly 
  enlarged. 
  

  

  tarsi 
  blackish 
  brown, 
  first 
  joint 
  more 
  or 
  less 
  clothed 
  above, 
  except 
  at 
  distal 
  extremity, 
  

   with 
  minute 
  appressed, 
  glistening 
  ivory 
  yellow 
  hairs 
  ; 
  middle 
  and 
  hind 
  tarsi 
  clove 
  

   brown, 
  proximal 
  two- 
  thirds 
  or 
  three- 
  fourths 
  of 
  first 
  joints 
  cream-buff 
  or 
  cream- 
  

   coloured, 
  clothed 
  with 
  minute, 
  appressed, 
  glistening 
  ivory 
  yellow 
  hairs, 
  mingled 
  

   with 
  minute 
  black 
  hairs. 
  

  

  Lower 
  Jordan 
  Valley 
  and 
  Jerusalem 
  : 
  type 
  from 
  Wadi 
  el 
  Kelt, 
  Jericho 
  Plain 
  

   ll.vi.1918, 
  biting 
  author's 
  arm 
  ; 
  a 
  para-type 
  from 
  Wadi 
  Mellaha 
  (about 
  6 
  J 
  miles 
  

   N.E. 
  of 
  Jericho, 
  near 
  R. 
  Jordan), 
  26.V.1918, 
  on 
  horse; 
  a 
  third 
  specimen 
  labelled 
  

   " 
  Jerusalem," 
  received 
  in 
  1912 
  from 
  the 
  Zoologisches 
  Museum, 
  Berlin. 
  

  

  In 
  size 
  as 
  well 
  as 
  in 
  thoracic 
  and 
  abdominal 
  markings 
  Tabanus 
  accensus, 
  at 
  least 
  

   in 
  the 
  female 
  sex, 
  presents 
  a 
  distinct 
  resemblance 
  to 
  the 
  Ethiopian 
  T. 
  jpertinens, 
  

   Austen 
  ; 
  the 
  female 
  of 
  the 
  new 
  species 
  is, 
  however, 
  at 
  once 
  distinguishable, 
  

   inter 
  alia, 
  by 
  the 
  much 
  narrower 
  front, 
  by 
  the 
  presence 
  of 
  two 
  black 
  or 
  blackish 
  

   brown 
  frontal 
  calli 
  instead 
  of 
  the 
  single 
  callus 
  being 
  either 
  absent 
  or 
  scarcely 
  notice- 
  

   able, 
  and 
  by 
  the 
  very 
  different 
  coloration 
  and 
  markings 
  of 
  the 
  legs, 
  especially 
  

   the 
  tibiae 
  and 
  tarsi. 
  

  

  