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  82 
  CAMERON, 
  Hymenoptera 
  Orientalia. 
  

  

  Pleurae 
  shining, 
  impunctate 
  ; 
  except 
  the 
  meta- 
  above 
  the 
  

   keel 
  ; 
  the 
  keel 
  near 
  the 
  base 
  of 
  the 
  mesopleurae 
  distinct 
  ; 
  

   the 
  furrow 
  in 
  front 
  of 
  the 
  apex 
  is 
  crenulated 
  ; 
  behind, 
  at 
  

   the 
  edge, 
  brownish. 
  The 
  upper 
  part 
  of 
  the 
  metapleurae 
  

   sparsely 
  punctured 
  ; 
  immediately 
  over 
  the 
  spiracles 
  is 
  a 
  

   semicircular, 
  shallow 
  depression. 
  Legs 
  stramineous 
  ; 
  the 
  

   hinder 
  coxae 
  slightly, 
  the 
  hinder 
  femora 
  distinctly, 
  fulvous. 
  

   Wings 
  hyaline 
  ; 
  the 
  nervures 
  blackish 
  ; 
  the 
  stigma 
  fuscous 
  ; 
  

   the 
  areolet 
  elongate, 
  three 
  times 
  as 
  long 
  as 
  its 
  height 
  ; 
  

   the 
  transverse 
  cubital 
  nervures 
  united 
  at 
  the 
  top 
  ; 
  the 
  

   recurrent 
  nervure 
  is 
  interstitial. 
  Abdomen 
  black, 
  the 
  

   ventral 
  surface 
  white 
  ; 
  the 
  base 
  of 
  the 
  second 
  and 
  third 
  

   segments 
  narrowly 
  red, 
  the 
  red 
  continued 
  obliquely 
  down 
  

   the 
  sides 
  to 
  unite 
  with 
  a 
  broad 
  band 
  on 
  the 
  apex 
  ; 
  the 
  

   third 
  segment 
  similarly 
  coloured, 
  but 
  darker 
  at 
  the 
  apex 
  ; 
  

   the 
  fourth 
  rufous 
  at 
  the 
  base 
  only 
  ; 
  the 
  petiole 
  smooth 
  at 
  

   the 
  base 
  ; 
  the 
  triangular 
  depression 
  moderately 
  deep, 
  and 
  

   continued 
  down 
  the 
  middle 
  to 
  the 
  base 
  of 
  the 
  punctured 
  

   part 
  as 
  a 
  wide, 
  deep 
  furrow, 
  rounded 
  at 
  the 
  apex 
  ; 
  its 
  sides 
  

   and 
  apex 
  above, 
  beyond 
  the 
  furrow, 
  bearing 
  large, 
  deep 
  

   punctures 
  ; 
  the 
  other 
  segments 
  strongly 
  punctured 
  ; 
  the 
  

   punctures 
  become 
  closer 
  and 
  rougher 
  ; 
  the 
  apices 
  of 
  the 
  

   second, 
  third 
  and 
  fourth 
  segments 
  are 
  impunctate. 
  

  

  This 
  species, 
  in 
  the 
  coloration 
  of 
  the 
  legs, 
  agrees 
  with 
  

   P. 
  himalayensis, 
  with 
  which 
  it 
  also 
  agrees 
  in 
  having 
  two 
  

   longitudinal 
  keels 
  on 
  the 
  base 
  of 
  the 
  median 
  segment; 
  but 
  

   it 
  differs 
  from 
  it 
  in 
  the 
  punctuation 
  on 
  the 
  median 
  seg- 
  

   ment 
  being 
  very 
  much 
  less 
  strong 
  and 
  the 
  punctures 
  

   fewer 
  in 
  number 
  ; 
  the 
  punctuation 
  on 
  the 
  abdomen 
  is 
  also 
  

   weaker, 
  and 
  it 
  differs 
  in 
  the 
  form 
  of 
  the 
  petiole, 
  in 
  which 
  

   the 
  apical 
  furrow, 
  so 
  distinctly 
  defined 
  in 
  the 
  present 
  

   species, 
  is 
  represented 
  in 
  P. 
  himalayensis 
  by 
  a 
  mere 
  shallow 
  

   depression 
  ; 
  lastly, 
  they 
  are 
  easily 
  separated 
  by 
  the 
  form 
  

   of 
  the 
  areolet, 
  and 
  by 
  P. 
  himalayensis 
  having 
  the 
  hinder 
  

   tibiae 
  black 
  and 
  white, 
  and 
  the 
  hinder 
  tibiae 
  fuscous. 
  

  

  