﻿NEW 
  AND 
  LITTLE-KNOWN 
  MESOPOTAMIAN 
  BLOOD-SUCKING 
  DIPTERA. 
  

  

  279 
  

  

  semi-shining, 
  admedian 
  longitudinal 
  stripes, 
  extending 
  in 
  each 
  case 
  from 
  a 
  short 
  

   distance 
  behind 
  upper 
  extremity 
  of 
  humeral 
  callus 
  to 
  inner 
  angle 
  of 
  posterior 
  extremity 
  

   of 
  postalar 
  callus, 
  dorsum 
  of 
  scutum 
  also 
  exhibiting 
  a 
  narrow, 
  dusky, 
  median 
  longi- 
  

   tudinal 
  line, 
  not 
  reaching 
  either 
  front 
  or 
  hind 
  margin 
  ; 
  dorsum 
  clothed 
  (more 
  thinly 
  

   on 
  dark 
  stripes) 
  with 
  short, 
  appressed, 
  glistening, 
  Naples-yellow 
  hairs, 
  pleurae 
  clothed 
  

   with 
  longer, 
  fine, 
  silky, 
  whitish 
  hair. 
  Abdomen 
  warm 
  buff, 
  first 
  and 
  second 
  segments 
  

   paler 
  (Naples 
  yellow), 
  dorsum 
  with 
  blackish-brown 
  markings 
  as 
  shown 
  in 
  fig. 
  3, 
  last 
  

   three 
  tergites 
  mainly 
  deep 
  olive-buff 
  pollinose 
  ; 
  venter 
  with 
  last 
  three 
  segments, 
  

   except 
  hind 
  borders, 
  infuscated 
  (deep 
  olive), 
  second 
  (visible) 
  and 
  third 
  sternites 
  

   sometimes 
  each 
  with 
  a 
  narrow, 
  deep 
  mouse-grey, 
  interrupted 
  median 
  longitudinal 
  

   stripe, 
  fourth 
  sternite 
  with 
  a 
  similarly 
  coloured, 
  more 
  or 
  less 
  well-defined, 
  median 
  

   blotch 
  resting 
  on 
  base 
  but 
  not 
  reaching 
  hind 
  margin 
  ; 
  abdomen 
  clothed 
  with 
  short, 
  

  

  Fig. 
  3. 
  Chrysops 
  simillima, 
  Austen, 
  Cj. 
  

  

  appressed, 
  glistening 
  Naples-yellow 
  hairs, 
  dark 
  markings 
  on 
  third 
  and 
  fourth 
  tergites 
  

   sometimes 
  clothed 
  mainly 
  with 
  minute 
  black 
  hairs. 
  Wings 
  with 
  mummy-brown 
  (in 
  

   life 
  perhaps 
  blackish-brown) 
  markings 
  as 
  shown 
  in 
  fig. 
  3, 
  there 
  being 
  a 
  large 
  and 
  well- 
  

   defined 
  clear 
  " 
  window-pane 
  " 
  in 
  discal 
  cell 
  (in 
  case 
  of 
  type 
  and 
  paratype, 
  at 
  any 
  rate, 
  

   communicating 
  more 
  or 
  less 
  distinctly 
  with 
  clear 
  space 
  in 
  fifth 
  posterior 
  cell), 
  and 
  

   apical 
  fleck 
  (Spitzenfleck 
  of 
  German 
  writers) 
  being 
  broader 
  than 
  costal 
  border 
  ; 
  

   infuscation 
  at 
  base 
  of 
  second 
  basal 
  cell 
  less 
  extensive 
  than 
  corresponding 
  infuscation 
  

   in 
  wing 
  of 
  C. 
  pimctifera, 
  Lw. 
  (for 
  infuscation 
  at 
  base 
  of 
  first 
  basal 
  cell 
  see 
  fig. 
  3, 
  and 
  

   diagnosis 
  in 
  italics 
  above). 
  Squamae 
  pale 
  pinkish-buff, 
  their 
  borders 
  paler. 
  H 
  alter 
  es 
  

   seal-brown 
  or 
  clove-brown, 
  stalks 
  sepia-coloured. 
  Legs 
  : 
  front 
  coxae 
  pinkish-buff, 
  

   pale 
  olive-buff 
  pollinose 
  on 
  anterior 
  surface, 
  middle 
  and 
  hind 
  coxae 
  lighter 
  or 
  darker 
  

   greyish 
  pollinose, 
  all 
  coxae 
  clothed 
  with 
  pale 
  hair 
  ; 
  trochanters 
  blackish 
  brown 
  ; 
  

   femora 
  ochraceous-tawny, 
  clothed 
  with 
  pale 
  (cream-buff) 
  hair 
  (extreme 
  tips 
  clothed, 
  

  

  