﻿CONTRIBUTION 
  TO 
  KNOWLEDGE 
  OF 
  TABANIDAE 
  OF 
  PALESTINE. 
  317 
  

  

  transverse 
  suture 
  above 
  bases 
  of 
  wings, 
  all 
  stripes 
  sometimes 
  difficult 
  to 
  distinguish 
  ; 
  

   dorsum 
  clothed 
  with 
  short, 
  appressed, 
  glistening, 
  pale 
  ochreous 
  or 
  greyish 
  hair, 
  

   on 
  darker 
  areas 
  mixed 
  with 
  short, 
  erect, 
  blackish 
  hair, 
  ground 
  colour 
  

   of 
  rather 
  less 
  than 
  distal 
  half 
  of 
  scutellum 
  when 
  denuded 
  sometimes 
  greyish 
  

   cinnamon-coloured 
  ; 
  swelling 
  occupying 
  depression 
  at 
  each 
  end 
  of 
  transverse 
  suture 
  

   clothed 
  with 
  fairly 
  long, 
  fine 
  black 
  hair, 
  mixed 
  with 
  yellowish 
  hair, 
  which 
  

   predominates 
  above 
  ; 
  pleurae 
  and 
  pectus 
  pale 
  smoke-grey 
  pollinose, 
  clothed 
  with 
  

   whitish 
  hair. 
  Abdomen 
  : 
  dorsum 
  from 
  second 
  to 
  sixth 
  segments 
  inclusive 
  with 
  

   four 
  longitudinal 
  rows 
  of 
  elongate, 
  more 
  or 
  less 
  oblique, 
  blackish 
  brown 
  spots, 
  four 
  

   spots 
  on 
  each 
  segment, 
  namely 
  an 
  admedian 
  pair 
  (extending 
  from 
  anterior 
  margin 
  

   outwards, 
  nearly 
  or 
  quite 
  reaching 
  hind 
  margin 
  and 
  enclosing 
  an 
  anteriorly 
  directed, 
  

   drab-grey, 
  truncated, 
  median 
  triangle), 
  and 
  a 
  lateral 
  oblique 
  spot 
  on 
  each 
  side 
  

   extending 
  backwards 
  and 
  outwards 
  from 
  anterior 
  margin, 
  partly 
  cutting 
  off 
  basal 
  

   angle 
  but 
  not 
  reaching 
  hind 
  margin, 
  area 
  between 
  lateral 
  and 
  admedian 
  dark 
  

   brown 
  spots 
  on 
  each 
  side 
  of 
  each 
  segment 
  thus 
  taking 
  shape 
  of 
  a 
  more 
  or 
  less 
  oval 
  

   or 
  elliptical 
  oval, 
  backwardly 
  and 
  outwardly 
  directed, 
  drab-grey 
  spot 
  ; 
  seventh 
  

   tergite 
  drab, 
  without 
  darker 
  markings 
  ; 
  median 
  drab-grey 
  triangles 
  resting 
  on 
  

   hind 
  margins 
  and 
  extending 
  to 
  front 
  margins 
  of 
  segments, 
  with 
  their 
  posterior 
  

   angles 
  somewhat 
  produced 
  outwards 
  ; 
  drab-grey 
  or 
  greyish 
  cinnamon 
  areas 
  of 
  

   dorsum 
  clothed 
  with 
  minute, 
  appressed, 
  glistening, 
  yellowish 
  hairs 
  (hair 
  on 
  extreme 
  

   lateral 
  extremities 
  of 
  anterior 
  tergites 
  more 
  whitish), 
  blackish 
  brown 
  areas 
  of 
  

   dorsum 
  clothed 
  with 
  minute, 
  appressed, 
  black 
  hairs, 
  longer 
  black 
  or 
  blackish 
  

   hairs 
  also 
  present 
  on 
  lateral 
  extremities 
  and 
  posterior 
  angles 
  of 
  last 
  three 
  tergites 
  ; 
  

   venter 
  light 
  pinkish 
  cinnamon 
  (hind 
  margins 
  of 
  second 
  to 
  sixth 
  segments 
  inclusive 
  

   paler 
  — 
  -light 
  buff), 
  suffused 
  with 
  pale 
  smoke-grey 
  or 
  pale 
  drab-grey 
  pollen, 
  and 
  clothed 
  

   with 
  minute, 
  appressed, 
  glistening, 
  cream-coloured 
  or 
  pale 
  yellowish 
  hair 
  ; 
  ventral 
  

   scute 
  of 
  seventh 
  segment 
  bearing 
  the 
  usual 
  coarse, 
  erect, 
  black 
  hairs. 
  Wings 
  

   hyaline, 
  clear 
  or 
  tinged 
  with 
  light 
  drab, 
  veins 
  lighter 
  or 
  darker 
  olive-brown, 
  

   auxiliary 
  and 
  first 
  longitudinal 
  veins, 
  and 
  proximal 
  portion 
  of 
  second 
  and 
  fifth 
  

   veins, 
  paler 
  (tawny-olive 
  or 
  cinnamon) 
  ; 
  stigma 
  faintly 
  tinged 
  with 
  yellowish 
  or 
  

   almost 
  colourless, 
  inconspicuous. 
  Squamae 
  whitish 
  or 
  ivory 
  yellow, 
  borders 
  cream- 
  

   coloured. 
  Halteres 
  ivory 
  yellow 
  or 
  cream-coloured, 
  distal 
  extremity 
  of 
  stalks 
  

   slightly 
  darker, 
  at 
  least 
  in 
  dried 
  specimens. 
  Legs: 
  coxae 
  drab-grey 
  or 
  smoke- 
  

   grey 
  pollinose 
  (ground-colour 
  of 
  front 
  pair 
  tawny-olive), 
  clothed 
  with 
  whitish 
  hair 
  ; 
  

   femora 
  cinnamon-buff 
  or 
  pinkish 
  cinnamon, 
  pale 
  smoke-grey 
  pollinose 
  on 
  outer 
  

   side, 
  clothed 
  with 
  whitish 
  or 
  pale 
  yellowish 
  hair, 
  front 
  femora 
  also 
  with 
  black 
  

   hairs 
  above 
  ; 
  tibiae 
  warm 
  buff 
  or 
  cinnamon-buff 
  (distal 
  fourth 
  or 
  rather 
  more 
  than 
  

   distal 
  fourth 
  of 
  front 
  pair 
  brownish), 
  clothed 
  with 
  minute, 
  appressed, 
  glistening, 
  

   cream-coloured 
  or 
  pale 
  yellowish 
  hair, 
  infuscated 
  distal 
  extremities 
  of 
  front 
  pair 
  

   and 
  extensor 
  surfaces 
  of 
  all 
  tibiae 
  also 
  largely 
  clothed 
  with 
  minute 
  black 
  hairs, 
  

   hind 
  tibiae 
  on 
  outer 
  side 
  with 
  a 
  fringe 
  of 
  longer 
  hair, 
  in 
  which 
  in 
  some 
  specimens 
  

   cream-coloured 
  in 
  others 
  black 
  hairs 
  predominate 
  ; 
  front 
  tarsi 
  dark 
  brown 
  or 
  dark 
  

   sepia 
  coloured, 
  third 
  and 
  fourth 
  joints 
  somewhat 
  expanded, 
  middle 
  and 
  hind 
  tarsi 
  

   mummy 
  brown 
  (first 
  joints 
  paler 
  at 
  base), 
  all 
  tarsi 
  clothed 
  above 
  with 
  minute 
  black 
  

   hairs, 
  front 
  tarsi 
  sometimes 
  also 
  with 
  yellowish 
  hairs 
  on 
  proximal 
  two-thirds 
  _b£~ 
  

   anterior 
  surface. 
  

  

  