﻿292 
  ERNEST 
  E. 
  AUSTEN. 
  

  

  development 
  of 
  the 
  grey 
  markings 
  ; 
  and 
  by 
  the 
  femora, 
  except 
  the 
  extreme 
  tips, 
  

   which 
  as 
  usual 
  are 
  cream-buff, 
  being 
  entirely 
  neutral 
  grey, 
  without 
  any 
  trace 
  of 
  

   greyish 
  fawn-coloured 
  or 
  greyish 
  cinnamon 
  markings. 
  

  

  From 
  Haematopota 
  minuscularia, 
  Austen, 
  $, 
  H. 
  innominata, 
  $, 
  is 
  distinguishable 
  

   owing 
  to 
  its 
  larger 
  size, 
  the 
  hair 
  on 
  the 
  front 
  being 
  mainly 
  blackish 
  or 
  blackish 
  

   brown, 
  the 
  first 
  joint 
  of 
  the 
  antenna, 
  as 
  viewed 
  from 
  the 
  side, 
  being 
  very 
  distinctly 
  

   swollen 
  and 
  less 
  conspicuously 
  greyish 
  pollinose, 
  and 
  by 
  the 
  grey 
  markings 
  on 
  the 
  

   dorsum 
  of 
  the 
  abdomen 
  being 
  much 
  less 
  extensive. 
  

  

  Lastly 
  Haematopota 
  innominata, 
  5> 
  ma 
  7 
  be 
  distinguished 
  from 
  H. 
  minuscula, 
  

   Austen, 
  $, 
  by 
  the 
  first 
  joint 
  of 
  the 
  antenna 
  being 
  less 
  swollen 
  and 
  more 
  elongate, 
  

   and 
  by 
  the 
  absence 
  of 
  broad, 
  grey, 
  lateral 
  borders 
  to 
  the 
  dorsum 
  of 
  the 
  abdomen. 
  

  

  Genus 
  Tabanus, 
  Linn. 
  

  

  The 
  seventy 
  specimens 
  of 
  this 
  genus 
  obtained 
  by 
  the 
  author 
  prove, 
  as 
  already 
  

   stated, 
  to 
  belong 
  to 
  sixteen 
  species, 
  of 
  which 
  seven, 
  or 
  43*7 
  per 
  cent 
  — 
  a 
  fairly 
  

   high 
  proportion 
  — 
  are 
  apparently 
  new. 
  The 
  list 
  of 
  species 
  is 
  as 
  follows 
  : 
  

  

  1. 
  Tabanus 
  decorus, 
  Lw. 
  

  

  2. 
  „ 
  alexandrinus, 
  Wied. 
  

  

  3. 
  „ 
  insecutor, 
  sp. 
  n. 
  

  

  4. 
  „ 
  gigas, 
  Herbst. 
  

  

  5. 
  „ 
  mendicus, 
  Villen. 
  

  

  6. 
  „ 
  lunatus, 
  Fabr. 
  

  

  7. 
  „ 
  nemoralis, 
  Mg. 
  

  

  8. 
  „ 
  eggeri, 
  Schin. 
  

  

  9. 
  „ 
  autumnalis, 
  Linn. 
  

  

  10. 
  „ 
  regularis, 
  Jaenn. 
  

  

  11. 
  ,, 
  rupinae, 
  sp. 
  n. 
  

  

  12. 
  „ 
  arenivagus, 
  sp. 
  n. 
  

  

  13. 
  „ 
  accensus, 
  sp. 
  n. 
  

  

  14. 
  ,, 
  leleani, 
  sp. 
  n. 
  

  

  15. 
  ,, 
  pallidipes, 
  sp. 
  n. 
  

  

  16. 
  „ 
  dalei, 
  sp. 
  n. 
  

  

  The 
  representatives 
  of 
  Tabanus 
  gigas 
  and 
  T. 
  autumnalis 
  show 
  variations 
  in 
  

   coloration 
  already 
  noticed 
  more 
  than 
  sixty 
  years 
  ago 
  by 
  Loew 
  (Verh. 
  z.-b. 
  Ges. 
  

   Wien, 
  Bd. 
  viii, 
  1858, 
  pp. 
  582-583, 
  605), 
  in 
  the 
  case 
  of 
  examples 
  from 
  Sicily, 
  Cyprus, 
  

   or 
  Asia 
  Minor. 
  In 
  particular, 
  the 
  russet 
  tint 
  of 
  the 
  ground-colour 
  of 
  the 
  dorsum 
  

   of 
  the 
  abdomen 
  in 
  females 
  of 
  T. 
  autumnalis, 
  Linn., 
  makes 
  the 
  recognition 
  of 
  such 
  

   individuals 
  a 
  matter 
  of 
  some 
  difficulty 
  for 
  those 
  who 
  are 
  only 
  familiar 
  with 
  the 
  

   form 
  of 
  the 
  species 
  usually 
  seen 
  in 
  Northern 
  and 
  Central 
  Europe, 
  in 
  which 
  the 
  

   abdomen 
  in 
  the 
  female 
  is 
  black 
  or 
  blackish 
  mouse 
  grey. 
  

  

  While 
  all 
  of 
  the 
  previously 
  described 
  species 
  of 
  Tabanus 
  met 
  with 
  in 
  Palestine 
  

   are 
  purely 
  palaearctic, 
  and 
  the 
  entire 
  Tabanid 
  fauna 
  appears 
  free 
  from 
  any 
  

   admixture 
  of 
  Oriental 
  or 
  Ethiopian 
  forms, 
  certain 
  of 
  the 
  more 
  or 
  less 
  grey 
  or 
  drab- 
  

   coloured 
  species 
  described 
  below 
  as 
  new, 
  such 
  as 
  T. 
  leleani, 
  T. 
  arenivagus, 
  and 
  

   T. 
  rupinae, 
  appear 
  to 
  some 
  extent 
  to 
  show 
  the 
  influence 
  of 
  a 
  desert 
  environment. 
  

  

  