﻿294 
  ERNEST 
  E. 
  AUSTEN. 
  

  

  15(16). 
  Blackish 
  species. 
  Dorsum 
  of 
  abdomen 
  slate-black, 
  transversely 
  banded 
  

   with 
  silvery- 
  white 
  hair 
  ; 
  wings 
  with 
  extreme 
  base 
  and 
  proximal 
  two- 
  

   thirds 
  of 
  costal 
  border 
  ochraceous-tawny, 
  contrasting 
  sharply 
  with 
  

   remainder 
  of 
  surface 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  dalei, 
  sp. 
  n. 
  [16]. 
  

  

  16(15). 
  Not 
  blackish 
  species. 
  Dorsum 
  of 
  abdomen 
  not 
  slate-black, 
  but 
  with 
  

   markings 
  arranged 
  in 
  longitudinal 
  series 
  ; 
  no 
  part 
  of 
  costal 
  border 
  pre- 
  

   senting 
  a 
  sharp 
  colour 
  contrast 
  to 
  remainder 
  of 
  wing. 
  

  

  17(18). 
  Conspicuously 
  narrow-bodied, 
  elongate 
  species. 
  

  

  a) 
  Frontal 
  triangle 
  in 
  <J 
  and 
  subcallus 
  in 
  $ 
  with 
  shining 
  transverse 
  

  

  band, 
  extending 
  from 
  eye 
  to 
  eye 
  . 
  . 
  . 
  . 
  arenivagus, 
  sp. 
  n.[12]. 
  

  

  b) 
  Frontal 
  triangle 
  in 
  $ 
  and 
  subcallus 
  in 
  $ 
  without 
  shining 
  transverse 
  

  

  band, 
  entirely 
  dull, 
  pollinose 
  . 
  . 
  . 
  . 
  accensus, 
  sp. 
  n. 
  [13]. 
  

  

  18(17). 
  Species 
  of 
  ordinary 
  shape, 
  not 
  conspicuously 
  narrow-bodied 
  or 
  elongate. 
  

   19(20). 
  Dorsum 
  of 
  abdomen 
  with 
  median 
  longitudinal 
  stripe. 
  

  

  a) 
  Ground-colour 
  of 
  dorsum 
  of 
  abdomen 
  ochraceous 
  tawny 
  

  

  rwpinae, 
  sp. 
  n. 
  [11]. 
  

  

  b) 
  Ground-colour 
  of 
  dorsum 
  of 
  abdomen 
  blackish 
  brown 
  ; 
  much 
  smaller 
  

  

  species 
  than 
  foregoing 
  (length 
  of 
  $ 
  13*5 
  to 
  14 
  mm.) 
  

  

  regularis, 
  Jaenn. 
  [10]. 
  

  

  20(19). 
  Dorsum 
  of 
  abdomen 
  without 
  median 
  longitudinal 
  stripe. 
  

  

  21(22). 
  Legs 
  in 
  $ 
  (only 
  sex 
  at 
  present 
  known), 
  except 
  extreme 
  tips 
  of 
  femora, 
  

   entirely 
  black 
  or 
  slate-black 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  . 
  insecutor, 
  sp. 
  n. 
  [3]. 
  

  

  22(21). 
  Legs 
  not 
  entirely 
  black 
  or 
  slate-black, 
  at 
  least 
  proximal 
  half 
  of 
  front 
  

   tibiae, 
  and 
  middle 
  and 
  hind 
  tibiae 
  except 
  tips, 
  pale 
  (cream-buff 
  or 
  

   ochraceous 
  buff). 
  

  

  23(24). 
  Femora 
  cinnamon-buff 
  or 
  pinkish 
  cinnamon 
  . 
  . 
  pallidijpes, 
  sp. 
  n. 
  [15]. 
  

  

  24(23). 
  Femora, 
  at 
  least 
  front 
  pair, 
  black 
  or 
  blackish, 
  neutral 
  grey 
  or 
  pale 
  neutral 
  

   grey 
  pollinose. 
  

  

  25(26). 
  Mouse 
  grey, 
  dark 
  mouse 
  grey 
  or 
  blackish 
  mouse 
  grey 
  species 
  ; 
  front 
  in 
  $ 
  

   broad 
  (its 
  length 
  equal 
  to 
  rather 
  less 
  than 
  four 
  times 
  its 
  breadth 
  at 
  lower 
  

   margin 
  of 
  lower 
  callus), 
  with 
  two 
  large 
  and 
  completely 
  separate 
  frontal 
  

   calli, 
  the 
  lower 
  callus 
  large, 
  quadrate, 
  broader 
  than 
  high 
  leleani, 
  sp. 
  n. 
  [14]. 
  

  

  26(25). 
  Not 
  mouse 
  grey 
  species 
  ; 
  front 
  in 
  $> 
  narrow 
  or 
  of 
  only 
  moderate 
  breadth 
  

   (its 
  length 
  equal 
  to 
  at 
  least 
  five 
  times 
  its 
  breadth 
  at 
  lower 
  extremity), 
  

   upper 
  callus 
  represented 
  only, 
  if 
  at 
  all, 
  by 
  a 
  narrow 
  median 
  line 
  running 
  

   upwards 
  from 
  lower 
  callus, 
  latter 
  narrow, 
  elongate, 
  usually 
  tapering 
  to 
  

   its 
  upper 
  extremity, 
  two 
  and 
  a 
  half 
  to 
  three 
  times 
  as 
  high 
  as 
  its 
  breadth 
  

   below. 
  

  

  27(28). 
  Sides 
  of 
  pale 
  triangles 
  in 
  middle 
  line 
  of 
  abdomen 
  not 
  concave 
  ; 
  first 
  

   posterior 
  cell 
  in 
  wing 
  greatly 
  narrowed 
  (sometimes 
  even 
  closed) 
  at 
  or 
  

   before 
  its 
  distal 
  extremity 
  ; 
  front 
  in 
  $ 
  at 
  least 
  seven 
  and 
  a 
  half 
  or 
  eight 
  

   times 
  as 
  long 
  as 
  its 
  breadth 
  at 
  lower 
  extremity 
  ; 
  venter, 
  except 
  extreme 
  

   tip, 
  and 
  a 
  broad, 
  median, 
  longitudinal, 
  shining, 
  slightly 
  or 
  not 
  at 
  all 
  

   infuscated 
  stripe, 
  uniformly 
  light 
  ochraceous-salmon 
  or 
  light 
  ochraceous- 
  

   buff 
  : 
  large 
  species, 
  at 
  least 
  19 
  or 
  20 
  mm. 
  in 
  length 
  . 
  . 
  eggeri, 
  Schin. 
  [8], 
  

  

  