﻿THE 
  TABANIDAE 
  OF 
  SOUTHERN 
  NYAS 
  ALAND. 
  

  

  303 
  

  

  The 
  pair 
  mentioned 
  of 
  this' 
  striking 
  and 
  handsome 
  species 
  of 
  Chri/sops, 
  

   which 
  I 
  have 
  much 
  pleasure 
  in 
  abdicating 
  to 
  Mr. 
  Wood, 
  were 
  taken 
  about 
  the 
  

   middle 
  of 
  the 
  day 
  on 
  the 
  leaves 
  of 
  a 
  shrub 
  overhanging 
  a 
  small 
  pool 
  in 
  a 
  more 
  or 
  

  

  Fig. 
  12. 
  Side-view 
  of 
  the 
  head 
  of, 
  (a) 
  C. 
  woodi, 
  sp. 
  n., 
  $ 
  ; 
  (b) 
  C. 
  austeni, 
  sp. 
  n., 
  $. 
  

  

  less 
  dried-up 
  stream-bed. 
  Prolonged 
  search, 
  both 
  then 
  and 
  on 
  my 
  return 
  journey 
  

   a 
  few 
  days 
  later, 
  failed 
  to 
  reveal 
  any 
  other 
  specimens, 
  so 
  that 
  it 
  would 
  appear 
  to 
  be 
  

   a 
  rare 
  species, 
  at 
  any 
  rate 
  at 
  that 
  season. 
  

  

  Chrysops 
  austeni, 
  sp. 
  nov. 
  

  

  This 
  species 
  is 
  nearly 
  allied 
  to 
  the 
  foregoing, 
  though 
  clearly 
  distinct 
  from 
  it, 
  

   being 
  smaller, 
  of 
  less 
  robust 
  build 
  and 
  less 
  brilliant 
  coloration. 
  

  

  cJ. 
  — 
  Length 
  (two 
  individuals), 
  8-9 
  '5 
  mm. 
  ; 
  length 
  of 
  wing, 
  7-8 
  mm. 
  

  

  $. 
  — 
  Length 
  (twelve 
  individuals), 
  average, 
  10-1 
  mm. 
  ; 
  length 
  of 
  wing, 
  8-8 
  mm. 
  

  

  Head 
  and 
  front 
  golden 
  yellow, 
  ocellar 
  triangle 
  black 
  ; 
  frontal 
  callus 
  dusky, 
  not 
  

   quite 
  so 
  large 
  as 
  in 
  C. 
  woodi, 
  but 
  even 
  more 
  prominent 
  and 
  slightly 
  nearer 
  the 
  base 
  

   of 
  the 
  antennae 
  (fig. 
  12, 
  b); 
  median 
  facial 
  tubercle 
  fulvous, 
  the 
  lateral 
  facial 
  tubercles 
  

   black 
  ; 
  rest 
  of 
  face 
  and 
  peristome 
  yellow-brown 
  ; 
  palpi 
  rufous 
  ; 
  antennae 
  with 
  the 
  first 
  

   longer 
  and 
  slightly 
  less 
  swollen 
  than 
  in 
  C. 
  woodi 
  (fig. 
  12), 
  yellow-brown, 
  with 
  a 
  varying 
  

  

  