﻿CONTRIBUTION 
  TO 
  KNOWLEDGE 
  OF 
  TABANIDAE 
  OF 
  PALESTINE. 
  315 
  

  

  The 
  author 
  has 
  much 
  pleasure 
  in 
  naming 
  this 
  species 
  in 
  honour 
  of 
  his 
  friend 
  

   Lt.-Col. 
  P. 
  S. 
  Lelean, 
  C.B., 
  C.M.G-., 
  R.A.M.C. 
  (his 
  cheery 
  tent-companion 
  during 
  many 
  

   months 
  of 
  the 
  Sinai-Palestine 
  campaign), 
  whose 
  ingenuity, 
  resource, 
  and 
  untiring 
  

   -energy 
  in 
  the 
  cause 
  of 
  field 
  sanitation 
  contributed 
  in 
  no 
  small 
  degree 
  to 
  the 
  healthy 
  

   efficiency 
  of 
  the 
  E.E.F. 
  

  

  Tabanus 
  leleani, 
  which 
  was 
  the 
  characteristic, 
  and 
  indeed 
  the 
  only 
  representative 
  

   of 
  its 
  genus 
  met 
  with 
  in 
  the 
  Wadi 
  Ghuzze 
  in 
  1917, 
  was 
  again 
  common 
  a 
  year 
  later 
  

   in 
  wadis 
  running 
  down 
  to 
  the 
  Lower 
  Jordan, 
  near 
  Jericho. 
  In 
  the 
  Wadi 
  el 
  Aujah, 
  

   19.iv.1918, 
  both 
  sexes 
  were 
  seen 
  resting 
  on 
  stones 
  near 
  the 
  water's 
  edge, 
  while 
  at 
  

   the 
  beginning 
  of 
  the 
  following 
  June, 
  towards 
  sunset, 
  males 
  were 
  noticed 
  in 
  some 
  

   numbers 
  sluggishly 
  resting 
  on 
  the 
  precipitous, 
  cliff-like 
  walls 
  of 
  the 
  Wadi 
  el 
  Kelt, 
  

   a 
  short 
  distance 
  above 
  the 
  spot 
  at 
  which 
  the 
  latter 
  leaves 
  the 
  hills 
  and 
  enters 
  the 
  

   plain 
  ; 
  under 
  such 
  conditions 
  the 
  insects 
  could 
  generally 
  be 
  boxed 
  or 
  captured 
  

   in 
  tubes 
  with 
  little 
  difficulty. 
  The 
  solitary 
  occasion 
  on 
  which 
  T. 
  leleani 
  was 
  

   observed 
  to 
  attack 
  man 
  has 
  already 
  been 
  recorded. 
  

  

  Fig. 
  14. 
  Tabanus 
  leleani, 
  Austen 
  : 
  a, 
  head 
  of 
  <J 
  in 
  profile 
  ; 
  b, 
  head 
  of 
  $ 
  from 
  in 
  

   front, 
  X 
  10 
  ; 
  b, 
  antenna 
  of 
  § 
  from 
  the 
  side, 
  greatly 
  enlarged. 
  

  

  Apart 
  from 
  its 
  much 
  paler 
  (greyer) 
  appearance, 
  Tabanus 
  leleani 
  is 
  distinguished 
  

   ifrom 
  T. 
  cordiger, 
  Mg., 
  by 
  the 
  presence 
  of 
  a 
  band 
  on 
  the 
  eyes, 
  by 
  the 
  row 
  of 
  erect 
  

   Jiair 
  on 
  the 
  upper 
  margin 
  of 
  the 
  occiput 
  in 
  the 
  $ 
  being 
  much 
  shorter, 
  finer 
  and 
  

   less 
  conspicuous, 
  by 
  the 
  erect 
  hair 
  on 
  the 
  dorsum 
  of 
  the 
  thorax 
  being 
  shorter 
  and 
  

   finer, 
  and 
  the 
  covering 
  of 
  pale 
  yellowish, 
  silky 
  hair 
  more 
  appressed. 
  

  

  In 
  general 
  appearance 
  and 
  the 
  majority 
  of 
  the 
  external 
  characters, 
  except 
  as 
  

   regards 
  size, 
  which 
  is 
  usually 
  distinctly 
  larger, 
  the 
  species 
  described 
  above 
  agrees 
  

   with 
  Tabanus 
  albifacies, 
  Lw., 
  found 
  in 
  Egypt 
  and 
  Persia. 
  T. 
  albifacies, 
  however, 
  

   is 
  distinguishable 
  at 
  once 
  by 
  the 
  presence 
  on 
  the 
  eyes 
  (at 
  least 
  in 
  the 
  5) 
  °f 
  three 
  

   bands 
  instead 
  of 
  only 
  a 
  single 
  band. 
  As 
  described 
  by 
  Loew 
  (Neue 
  Beitrage, 
  iv, 
  

   p. 
  28 
  (1856)), 
  the 
  wing 
  of 
  T. 
  albifacies 
  shows 
  a 
  well-marked 
  appendix 
  to 
  the 
  anterior 
  

   branch 
  of 
  the 
  third 
  longitudinal 
  vein. 
  In 
  the 
  specimens 
  of 
  T. 
  leleani 
  examined 
  

   such 
  an 
  appendix 
  is 
  absent, 
  except 
  in 
  the 
  case 
  of 
  two 
  $ 
  5 
  from 
  Nasiryah, 
  Mesopotamia 
  

   (Major 
  W. 
  S. 
  Potion, 
  I.M.S.). 
  

  

  So 
  far 
  as 
  can 
  be 
  judged 
  from 
  the 
  original 
  description 
  of 
  Tabanus 
  unicinctus, 
  Lw., 
  

   the 
  type 
  of 
  which, 
  like 
  that 
  of 
  the 
  foregoing, 
  was 
  obtained 
  in 
  Egypt, 
  T. 
  leleani 
  also 
  

  

  