﻿312 
  

  

  EENEST 
  E. 
  AUSTEN. 
  

  

  14. 
  Tabanus 
  leleani, 
  sp. 
  n. 
  (figs. 
  13, 
  14.) 
  

  

  (J 
  P. 
  — 
  Length, 
  £ 
  (8 
  specimens) 
  12 
  to 
  14 
  mm., 
  $ 
  (17 
  specimens) 
  11 
  to 
  14*6 
  mm. 
  ; 
  

   width, 
  of 
  head, 
  <J 
  4*4 
  to 
  5 
  *4 
  mm., 
  $ 
  4 
  '25 
  to 
  5*4 
  mm. 
  ; 
  width 
  of 
  front 
  of 
  $, 
  at 
  vertex 
  

   0*8 
  to 
  1 
  mm., 
  across 
  lower 
  edge 
  of 
  frontal 
  callus 
  0*5 
  to 
  0'75 
  mm. 
  ; 
  length 
  of 
  wing, 
  

   <J 
  8-75 
  to 
  10-8 
  mm., 
  $ 
  8*75 
  to 
  11*6 
  mm. 
  

  

  In 
  general 
  appearance 
  looking 
  like 
  a 
  greyish 
  form 
  of 
  Tabanus 
  cordiger, 
  Mg., 
  with 
  

   which 
  it 
  closely 
  agrees 
  as 
  regards 
  pattern 
  of 
  abdominal 
  markings, 
  and 
  dimensions 
  and 
  

   other 
  details 
  of 
  $ 
  front. 
  Eyes 
  under 
  an 
  ordinary 
  hand-lens 
  appearing 
  bare 
  in 
  both 
  

   sexes, 
  in 
  $ 
  with 
  a 
  sharply 
  contrasted 
  area 
  of 
  greatly 
  enlarged 
  facets 
  , 
  and 
  in 
  both 
  sexes 
  

   with 
  a 
  single', 
  horizontal, 
  transverse 
  band 
  ; 
  dorsum 
  of 
  thorax 
  (in 
  undamaged 
  specimens) 
  

   mouse 
  grey, 
  clothed 
  with 
  fine 
  erect 
  hair, 
  interspersed 
  with 
  a 
  coating 
  of 
  fine, 
  appressed, 
  

   short, 
  silky 
  hair, 
  of 
  an 
  ochreous 
  or 
  somewhat 
  paler 
  colour 
  ; 
  dorsum 
  of 
  abdomen 
  dark 
  

   mouse 
  grey 
  or 
  blackish 
  mouse 
  grey 
  (when 
  viewed 
  at 
  a 
  low 
  angle 
  from 
  behind 
  suffused, 
  

   like 
  thorax, 
  with 
  pale 
  neutral 
  grey 
  bloom), 
  with, 
  in 
  middle 
  line, 
  a 
  longitudinal 
  series 
  

   of 
  pallid 
  neutral 
  grey 
  triangles, 
  and, 
  on 
  each 
  side, 
  midway 
  between 
  middle 
  line 
  and 
  

   lateral 
  margin, 
  a 
  series 
  of 
  oblique 
  and 
  roughly 
  elliptical 
  spots 
  of 
  same 
  colour, 
  sides 
  of 
  

   two 
  or 
  more 
  of 
  the 
  proximal 
  segments, 
  from 
  posterior 
  angles 
  of 
  first 
  (visible) 
  to 
  fourth 
  

   inclusive, 
  often 
  more 
  or 
  less 
  cinnamon 
  ; 
  wings 
  hyaline, 
  stigma 
  scarcely 
  distinguishable, 
  

   anterior 
  branch 
  of 
  third 
  vein 
  typically 
  without 
  appendix. 
  

  

  Fig. 
  13. 
  Tabanus 
  leleani, 
  Austen, 
  <j>. 
  X 
  4. 
  

  

  Head 
  : 
  face 
  and 
  jowls 
  whitish 
  pollinose 
  and 
  clothed 
  with 
  white^hair, 
  occiput 
  

   in 
  both 
  sexes, 
  frontal 
  triangle 
  in 
  <}, 
  and 
  front 
  and 
  subcallus 
  in 
  $ 
  pale 
  olive-grey 
  

   pollinose 
  ; 
  frontal 
  triangle 
  in 
  (J, 
  immediately 
  below 
  level 
  of 
  enlarged 
  facets 
  of 
  eyes, 
  

   crossed 
  by 
  a 
  somewhat 
  deep, 
  dusky, 
  shimmering 
  pollinose, 
  horizontal 
  band 
  ; 
  in 
  

   both 
  sexes 
  a 
  dark 
  clove-brown 
  horizontal 
  band 
  between 
  base 
  of 
  antenna 
  and 
  eye 
  

   on 
  each 
  side 
  ; 
  hind 
  margin 
  of 
  upper 
  border 
  of 
  occiput 
  fringed 
  with 
  short, 
  erect 
  or 
  

   forward-curving, 
  whitish 
  or 
  pale 
  yellowish 
  hair, 
  among 
  which 
  are 
  occasionally 
  

   intermixed 
  on 
  each 
  side 
  a 
  few 
  short 
  black 
  hairs, 
  though, 
  at 
  least 
  in 
  the 
  case 
  of 
  the 
  

   cJ, 
  the 
  fringe 
  is 
  much 
  shorter 
  than 
  the 
  corresponding 
  one 
  in 
  T. 
  cordiger, 
  Mg. 
  ; 
  front 
  

  

  