﻿On 
  Au&tt'LiUan 
  Sjjccies 
  o/Tabanus. 
  2G3 
  

  

  Discognathus 
  wance, 
  sp. 
  n. 
  

  

  Depth 
  of 
  body 
  4 
  in 
  tlie 
  length, 
  length 
  of 
  head 
  4^ 
  to 
  4|. 
  

   Snout 
  rounded, 
  nearly 
  as 
  long 
  as 
  postorbital 
  part 
  of 
  head 
  ; 
  

   diameter 
  of 
  eye 
  5 
  in 
  length 
  of 
  head 
  ; 
  interorbital 
  region 
  flat, 
  

   its 
  width 
  nearly 
  ^ 
  lengtii 
  of 
  head. 
  Width 
  o£ 
  mouth 
  ^ 
  length 
  

   of 
  head 
  ; 
  two 
  barbels 
  on 
  each 
  side, 
  shorter 
  than 
  diameter 
  of 
  

   eye. 
  Upper 
  lip 
  with 
  minute 
  papillae 
  near 
  the 
  margin 
  ; 
  lower 
  

   very 
  narrow 
  ; 
  behind 
  it 
  a 
  circular 
  disc 
  divided 
  into 
  a 
  papillose 
  

   anterior 
  and 
  a 
  smooth 
  posterior 
  portion, 
  and 
  with 
  only 
  the 
  

   posterior 
  edge 
  free. 
  Dorsal 
  III 
  7 
  ; 
  origin 
  equidistant 
  from 
  

   tip 
  of 
  snout 
  and 
  base 
  of 
  caudal 
  ; 
  first 
  or 
  second 
  branched 
  ray 
  

   longest, 
  nearly 
  as 
  long 
  as 
  head. 
  Anal 
  115. 
  Pectoral 
  ex- 
  

   tending 
  I 
  of 
  distance 
  from 
  its 
  base 
  to 
  pelvics, 
  which 
  nearly 
  

   or 
  quite 
  reach 
  vent. 
  Caudal 
  deeply 
  emarginate. 
  Greyish, 
  

   mottled 
  with 
  darker. 
  

  

  Five 
  specimens, 
  the 
  largest 
  80 
  mm. 
  in 
  total 
  length. 
  

  

  XX 
  VII. 
  — 
  071 
  certain 
  recently 
  described 
  Australian 
  Species 
  

   o/Tabanus. 
  By 
  Ernest 
  E. 
  Austen. 
  

  

  (Published 
  by 
  permission 
  of 
  the 
  Trustees 
  of 
  the 
  British 
  Museum.) 
  

  

  The 
  following 
  notes, 
  which 
  relate 
  to 
  a 
  paper 
  published 
  last 
  

   year^ 
  by 
  Mr. 
  Frank 
  H. 
  Taylor, 
  F.E.S., 
  Entomologist 
  to 
  the 
  

   newly 
  established 
  Australian 
  Institute 
  of 
  Tropical 
  Medicine, 
  

   at 
  Townsville, 
  Queensland, 
  are 
  written 
  in 
  no 
  spirit 
  o£ 
  

   churlish 
  criticism, 
  but 
  solely 
  with 
  a 
  view 
  to 
  assist 
  other 
  

   workers 
  at 
  an 
  important 
  family 
  of 
  Diptera, 
  the 
  study 
  of 
  

   which 
  is 
  beset 
  with 
  peculiar 
  difficulties. 
  The 
  descriptions 
  

   of 
  the 
  older 
  authors 
  relating 
  to 
  this 
  family 
  are 
  almost 
  

   always 
  unsatisfactory 
  and 
  incomplete, 
  and, 
  based 
  as 
  they 
  too 
  

   often 
  were 
  on 
  rubbed 
  or 
  otherwise 
  damaged 
  specimens, 
  are 
  

   frequently 
  misleading. 
  It 
  follows, 
  then, 
  that 
  their 
  correct 
  

   interpretation 
  is 
  in 
  many 
  cases 
  well-nigh 
  impossible 
  for 
  those 
  

   who 
  are 
  unable 
  to 
  examine 
  the 
  types, 
  and 
  are 
  unassisted 
  by 
  

   access 
  to 
  a 
  well-equipped 
  library 
  or 
  a 
  large 
  collection 
  of 
  

   accurately 
  determined 
  material. 
  In 
  the 
  case 
  of 
  Tabanida?, 
  

   again, 
  Australia 
  appears 
  to 
  be 
  peculiarly 
  rich 
  in 
  groups 
  of 
  

  

  * 
  Cf. 
  'Australian 
  Institute 
  of 
  Tropical 
  Medicine, 
  Report 
  for 
  the 
  Year 
  

   1911' 
  (Sydney: 
  Angus 
  and 
  Robertson, 
  Ltd. 
  London: 
  The 
  Oxford 
  

   University 
  Press, 
  19l3). 
  Pp. 
  GO-70, 
  and 
  pi. 
  xiv.— 
  The 
  title-page 
  of 
  this 
  

   publication 
  bears 
  no 
  date, 
  but 
  the 
  writer 
  has 
  been 
  informed 
  by 
  Mr. 
  Taylor 
  

   that 
  the 
  Report 
  appeared 
  in 
  Mav, 
  1913. 
  

  

  18* 
  

  

  