﻿CONTRIBUTION 
  TO 
  KNOWLEDGE 
  OP 
  TABANIDAE 
  OP 
  PALESTINE. 
  281 
  

  

  1. 
  Haematopota 
  seweHi, 
  sp 
  n. 
  (figs. 
  2, 
  3). 
  

  

  cJ$. 
  — 
  Length, 
  <J 
  (8 
  specimens) 
  11 
  to 
  12*2 
  mm., 
  $ 
  (17 
  specimens) 
  9 
  to 
  12"5 
  mm. 
  ; 
  

   width 
  of 
  head, 
  <J4 
  to 
  4*4 
  mm., 
  $ 
  3 
  to 
  4 
  mm. 
  ; 
  width 
  of 
  front 
  of 
  $ 
  at 
  vertex 
  1*2 
  to 
  

   1*5 
  mm. 
  ; 
  length 
  of 
  wing, 
  (J 
  8*5 
  to 
  9*4 
  mm., 
  $ 
  7 
  '4 
  to 
  10 
  mm. 
  

  

  Blackish 
  (<$) 
  or 
  blackish 
  brown, 
  greyish 
  olive, 
  or 
  deep 
  greyish 
  olive 
  ($) 
  species, 
  

   allied 
  to 
  and 
  superficially 
  closely 
  resembling 
  H. 
  pluvialis, 
  Linn. 
  : 
  distinguished 
  in 
  

   the 
  (J 
  by 
  the 
  hair 
  on 
  the 
  upper 
  and 
  under 
  sides 
  of 
  the 
  first 
  antennal 
  joint 
  being 
  shorter 
  

   and 
  less 
  fine, 
  while 
  the 
  proximal 
  half 
  of 
  the 
  joint 
  is 
  entirely 
  olive-grey 
  pollinose, 
  instead 
  

   of 
  the 
  pollinose 
  covering 
  being 
  confined 
  chiefly 
  to 
  the 
  upper 
  and 
  inner 
  side 
  of 
  the 
  proximal 
  

   half 
  or 
  two-thirds 
  ; 
  by 
  the 
  femora 
  of 
  all 
  three 
  pairs 
  of 
  legs 
  in 
  the 
  (J, 
  or 
  at 
  least 
  those 
  

   of 
  the 
  middle 
  pair, 
  having 
  a 
  complete 
  or 
  incomplete 
  tawny 
  or 
  ochraceous-tawny 
  band, 
  

   instead 
  of 
  all 
  the 
  femora 
  being 
  unicolorous 
  dark 
  neutral 
  grey, 
  iron 
  grey, 
  or 
  dark 
  olive- 
  

   grey 
  ; 
  by 
  the 
  first 
  antennal 
  joint 
  in 
  the 
  $ 
  being 
  somewhat 
  longer, 
  usually 
  slightly 
  less 
  

   swollen 
  in 
  proportion 
  to 
  its 
  length, 
  duller 
  {mouse 
  grey, 
  dark 
  neutral 
  grey, 
  or 
  cinnamon- 
  

   drab 
  pollinose 
  instead 
  of 
  partly 
  shining 
  black), 
  and, 
  if 
  anything, 
  more 
  distinctly 
  

   constricted 
  before 
  the 
  tip, 
  but 
  with 
  its 
  upper 
  surface 
  not 
  humped 
  up 
  before 
  the 
  con- 
  

   striction 
  ; 
  and 
  by 
  the 
  femora 
  in 
  the 
  5 
  being 
  largely 
  greyish 
  fawn-coloured 
  or 
  greyish 
  

   cinnamon, 
  instead 
  of 
  uniformly 
  grey 
  (deep 
  olive-grey 
  or 
  neutral-grey). 
  

  

  Head 
  : 
  front 
  in 
  $ 
  smoke 
  grey 
  pollinose, 
  clothed 
  partly 
  with 
  short, 
  erect, 
  blackish 
  

   hair, 
  partly 
  with 
  pale 
  yellowish 
  hair, 
  vertex 
  with 
  a 
  pair 
  of 
  admedian, 
  mouse 
  grey 
  

   or 
  deep 
  mouse 
  grey 
  blotches 
  ; 
  frontal 
  triangle 
  in 
  $ 
  greyish 
  olive, 
  both 
  sexes 
  between 
  

   and 
  above 
  bases 
  of 
  antennae 
  with 
  a 
  large, 
  dead 
  black 
  or 
  blackish 
  brown, 
  hexagonal 
  

   or 
  quadrate 
  spot, 
  which 
  in 
  $ 
  is 
  bounded 
  above 
  by 
  the 
  frontal 
  callus 
  ; 
  face 
  in 
  <J 
  

   pallid 
  neutral 
  grey 
  pollinose, 
  in 
  $ 
  whitish 
  pollinose, 
  in 
  both 
  sexes 
  speckled 
  with 
  

   blackish 
  brown 
  on 
  each 
  side, 
  in 
  <$ 
  clothed 
  on 
  each 
  side 
  with 
  fairly 
  long 
  blackish 
  

   brown 
  hair, 
  in 
  $ 
  with 
  a 
  pair 
  of 
  small 
  but 
  fairly 
  conspicuous, 
  admedian, 
  blackish 
  

   brown 
  spots 
  below 
  the 
  antennae, 
  and 
  clothed 
  with 
  whitish 
  hair; 
  jowls 
  whitish 
  

   pollinose, 
  clothed 
  with 
  whitish 
  hair, 
  part 
  of 
  which 
  in 
  <J 
  sometimes 
  has 
  a 
  yellowish 
  

   tinge 
  ; 
  occiput 
  olive-grey, 
  light 
  olive-grey, 
  or 
  deep 
  olive-grey, 
  its 
  upper 
  margin 
  

   fringed 
  in 
  (J 
  with 
  a 
  mixture 
  of 
  fairly 
  long, 
  erect, 
  blackish 
  and 
  yellowish 
  hair, 
  and 
  

   in 
  5 
  on 
  each 
  side 
  of 
  front 
  with 
  short 
  yellowish 
  hair 
  ; 
  frontal 
  spots 
  in 
  $ 
  blackish 
  

   brown 
  or 
  black, 
  median 
  spot 
  usually 
  small 
  but 
  distinct, 
  lateral 
  spots 
  either 
  roughly 
  

   triangular 
  or 
  more 
  or 
  less 
  rounded, 
  not 
  in 
  contact 
  with 
  eyes 
  ; 
  frontal 
  callus 
  in 
  5 
  

   shining 
  black, 
  of 
  moderate 
  depth, 
  its 
  lateral 
  extremities 
  somewhat 
  deeper 
  and 
  

   narrowly 
  connected 
  below 
  with 
  each 
  eye, 
  its 
  upper 
  margin 
  produced 
  in 
  middle 
  

   line 
  into 
  a 
  small, 
  upwardly 
  directed 
  angle 
  ; 
  eyes 
  in 
  £ 
  densely 
  clothed 
  with 
  fine, 
  

   erect, 
  drab-grey 
  hair, 
  hairy 
  covering 
  of 
  eyes 
  in 
  5 
  very 
  short, 
  but 
  distinguishable 
  

   under 
  a 
  hand-lens 
  magnifying 
  about 
  5 
  diameters, 
  larger 
  facets 
  in 
  (J 
  contrasting 
  

   conspicuously 
  with 
  those 
  forming 
  remainder 
  of 
  surface, 
  but 
  not 
  coarse 
  ; 
  proximal 
  

   segment 
  of 
  <J 
  palpi 
  mouse 
  grey 
  or 
  deep 
  mouse 
  grey, 
  clothed 
  with 
  long 
  whitish 
  

   hair, 
  terminal 
  segment 
  fairly 
  large, 
  ovate 
  pyriform, 
  pointed 
  at 
  distal 
  extremity, 
  

   greyish 
  pollinose 
  pinkish 
  buff, 
  usually 
  with 
  an 
  ill-defined 
  mouse 
  grey 
  blotch 
  on 
  outer 
  

   side 
  near 
  base, 
  clothed 
  with 
  whitish 
  hair, 
  which 
  on 
  upper 
  margin 
  beyond 
  base 
  is 
  

   mixed 
  with 
  fine, 
  erect, 
  black 
  or 
  blackish 
  hair 
  ; 
  palpi 
  in 
  5 
  greyish 
  pollinose 
  pinkish 
  

   buff, 
  proximal 
  segment 
  sometimes 
  with 
  a 
  mouse 
  grey 
  spot 
  on 
  outer 
  side 
  near 
  

  

  