﻿98 
  F. 
  \V. 
  EDWARDS. 
  

  

  The 
  species 
  is 
  closely 
  allied 
  to 
  A. 
  confusus, 
  Edw., 
  differing 
  in 
  the 
  much 
  narrower 
  

   white 
  margin 
  to 
  the 
  mesonotum 
  in 
  the 
  $ 
  ; 
  denser 
  hairs 
  on 
  the 
  basal 
  lobes 
  of 
  the 
  

   side-pieces, 
  and 
  less 
  crenulate 
  mesosome 
  ; 
  also 
  in 
  the 
  possession 
  of 
  narrow 
  dark 
  

   bands 
  on 
  the 
  sternites. 
  It 
  is 
  possible 
  that 
  the 
  $$ 
  are 
  not 
  conspecific 
  with 
  the 
  ££. 
  

  

  H. 
  — 
  On 
  the 
  Genera 
  Bironella 
  and 
  Leptosomatomyia. 
  

  

  These 
  two 
  genera 
  were 
  erected 
  by 
  Theobald 
  in 
  1905 
  (Ann. 
  Mus. 
  Nat. 
  Hung, 
  hi, 
  

   pp. 
  69 
  & 
  110) 
  for 
  species 
  from 
  New 
  Guinea 
  represented 
  in 
  the 
  Hungarian 
  National 
  

   Museum. 
  Neither 
  species 
  has 
  been 
  found 
  again 
  since, 
  and 
  the 
  exact 
  systematic 
  

   position 
  of 
  both 
  has 
  been 
  a 
  matter 
  of 
  some 
  doubt. 
  Recently, 
  through 
  the 
  kindness 
  

   of 
  Dr. 
  K. 
  Kertesz, 
  I 
  have 
  re-examined 
  the 
  types 
  and 
  mounted 
  the 
  male 
  hypopygia 
  

   of 
  each, 
  and 
  am 
  therefore 
  able 
  to 
  throw 
  some 
  further 
  light 
  on 
  these 
  interesting 
  species. 
  

   I 
  give 
  below 
  the 
  characters 
  not 
  mentioned 
  or 
  left 
  doubtful 
  in 
  Theobald's 
  descriptions. 
  

  

  Bironella 
  gracilis, 
  Theo. 
  

  

  ct. 
  Palpi 
  scarcely 
  shorter 
  than 
  the 
  proboscis 
  (not 
  only 
  two-thirds 
  the 
  length, 
  as 
  

   stated 
  by 
  Theobald), 
  the 
  last 
  segment 
  not 
  very 
  much 
  swollen. 
  Last 
  two 
  segments 
  

   of 
  antennae 
  scarcely 
  any 
  longer 
  than 
  the 
  preceding 
  two 
  or 
  three, 
  which 
  are 
  slightly 
  

   longer 
  than 
  the 
  rest. 
  Head 
  and 
  thorax 
  both 
  shaped 
  as 
  in 
  Anopheles. 
  Mesonotum 
  

   somewhat 
  shining, 
  not 
  darker 
  at 
  the 
  sides, 
  without 
  any 
  scales 
  ; 
  abdomen 
  also 
  devoid 
  

   of 
  scales. 
  Legs 
  covered 
  with 
  small 
  scales. 
  Wing 
  membrane 
  with 
  well-marked 
  

   microtrichia. 
  

  

  Hvpopygium 
  : 
  side-pieces 
  short 
  and 
  stout, 
  less 
  than 
  twice 
  as 
  long 
  as 
  their 
  width 
  

   at 
  the 
  base, 
  basal 
  membrane 
  large 
  and 
  apparently 
  striated 
  ; 
  from 
  the 
  outer 
  basal 
  

   corner 
  of 
  each 
  side-piece 
  arises 
  a 
  stout 
  curved 
  finger-like 
  process, 
  which 
  is 
  more 
  than 
  

   half 
  as 
  long 
  as 
  the 
  side-piece, 
  finely 
  pubescent 
  towards 
  its 
  base, 
  otherwise 
  bare, 
  its 
  

   apical 
  half 
  strongly 
  chitinised, 
  tip 
  blunt 
  and 
  slightly 
  lobed. 
  Apart 
  from 
  these 
  pro- 
  

   cesses, 
  there 
  are 
  no 
  spines 
  on 
  the 
  side-pieces. 
  Claspers 
  rather 
  long, 
  nearly 
  cylindrical, 
  

   with 
  a 
  post-median 
  lump 
  on 
  the 
  outer 
  side, 
  terminal 
  claw 
  short 
  and 
  broad. 
  Ninth 
  

   tergite 
  a 
  narrow, 
  transverse 
  oval, 
  posterior 
  margin 
  simple. 
  Anal 
  segment 
  mem- 
  

   branous, 
  elongate-conical, 
  two-thirds 
  as 
  long 
  as 
  the 
  side-piece. 
  Aedoeagus 
  (theca) 
  

   a 
  long, 
  slender, 
  cylindrical 
  tube, 
  with 
  a 
  single 
  pair 
  of 
  reflexed 
  leaflets 
  at 
  its 
  tip, 
  the 
  

   leaflets 
  a 
  little 
  over 
  a 
  quarter 
  as 
  long 
  as 
  the 
  tube. 
  

  

  The 
  above 
  data 
  are 
  sufficient 
  to 
  establish 
  Bironella 
  as 
  a 
  distinct 
  genus 
  of 
  the 
  

   Anophelini, 
  the 
  position 
  assigned 
  to 
  it 
  with 
  some 
  doubt 
  by 
  Theobald. 
  

  

  Leptosomatomyia 
  lateralis, 
  Theo. 
  

  

  <J. 
  Proboscis 
  shorter 
  than 
  the 
  abdomen, 
  but 
  not 
  swollen 
  at 
  the 
  tip. 
  Eyes 
  touching. 
  

   Last 
  two 
  antennal 
  segments 
  together 
  about 
  half 
  as 
  long 
  as 
  the 
  rest 
  of 
  the 
  flagellum, 
  

   and 
  with 
  longer 
  pubescence, 
  last 
  longer 
  than 
  penultimate 
  ; 
  basal 
  flagellar 
  segments 
  with 
  

   median 
  whorls 
  only, 
  no 
  short 
  hairs 
  at 
  the 
  tips, 
  scarcely 
  swollen 
  in 
  the 
  middle. 
  Flat 
  

   scales 
  of 
  head 
  reaching 
  the 
  middle 
  line 
  in 
  front, 
  surrounding 
  the 
  patch 
  of 
  narrow- 
  

   scales, 
  but 
  there 
  is 
  a 
  row 
  of 
  narrow 
  scales 
  on 
  the 
  eye-margins 
  at 
  the 
  sides, 
  not 
  shown 
  

   in 
  Theobald's 
  diagram. 
  The 
  specimen 
  is 
  pinned 
  from 
  the 
  side, 
  and 
  the 
  pleural 
  

   bristles 
  are 
  largely 
  obscured, 
  especially 
  in 
  the 
  spiracular 
  and 
  post-spiracular 
  areas 
  ; 
  

   there 
  are 
  several 
  pro-epimerals, 
  and 
  about 
  five 
  lower 
  mesepimerals. 
  The 
  pro-epimera 
  

   have 
  broad 
  white 
  flat 
  scales 
  below 
  and 
  some 
  narrow 
  ones 
  above. 
  Hind 
  tibiae 
  very 
  

   slightly 
  longer 
  than 
  the 
  front 
  ones 
  ; 
  first 
  hind 
  tarsal 
  segment 
  very 
  slightly 
  longer 
  

   than 
  the 
  tibia 
  ; 
  hind 
  claws 
  very 
  minute 
  ; 
  no 
  pulvilli 
  (?). 
  Vein 
  Sc 
  ending 
  just 
  before 
  

   the 
  apex 
  of 
  Rs 
  ; 
  Cell 
  R 
  2 
  not 
  at 
  all 
  narrowed 
  apically 
  ; 
  posterior 
  cross-vein 
  not 
  

   unusually 
  short. 
  

  

  Hypopygium 
  : 
  ninth 
  tergite 
  forming 
  a 
  narrow 
  strip, 
  scarcely 
  divided 
  in 
  the 
  

   middle, 
  with 
  short 
  hairs. 
  Side-pieces 
  a 
  little 
  over 
  twice 
  aas 
  long 
  as 
  their 
  greatest 
  

   breadth, 
  outer 
  face 
  scaly, 
  lower 
  face 
  with 
  a 
  patch 
  of 
  hair 
  ; 
  on 
  the 
  upper 
  side 
  of 
  the 
  

  

  