﻿4 
  CAMERON, 
  Hymenoptera 
  Orientalia. 
  

  

  and 
  minutely 
  punctured 
  ; 
  the 
  gastrocceli 
  long, 
  narrow, 
  

   shallow, 
  and 
  wider 
  at 
  the 
  base. 
  

  

  SlLSILA 
  BILINEATA, 
  sp. 
  110V. 
  

  

  Nigra 
  ; 
  flavo-maculata 
  ; 
  pedibus 
  fulvis 
  ; 
  cox 
  is 
  trochan- 
  

  

  teribusque 
  anterioribus 
  flavis, 
  coxis 
  trochanteribusque 
  

   poslicis, 
  apicibus 
  femorum 
  tibiarumque 
  nigris 
  ; 
  a/is 
  hyalinis, 
  

   stigmate 
  nervisque 
  nigris. 
  $ 
  . 
  

  

  Long. 
  13 
  mm. 
  

  

  Antennae 
  longer 
  than 
  the 
  body 
  ; 
  black, 
  thickly 
  covered 
  

   with 
  short 
  stiff 
  black 
  pubescence 
  ; 
  the 
  seventh 
  to 
  sixteenth 
  

   joints 
  clear 
  white. 
  Head 
  smooth 
  and 
  shining, 
  the 
  face 
  

   covered 
  sparsely 
  with 
  short, 
  white 
  pubescence 
  ; 
  the 
  face, 
  

   clypeus 
  (except 
  at 
  the 
  apex), 
  the 
  mandibles, 
  palpi, 
  inner 
  

   orbits 
  narrowly 
  above, 
  and 
  the 
  lower 
  half 
  of 
  the 
  outer 
  more 
  

   broadly, 
  lemon-yellow 
  ; 
  the 
  ocellar 
  region 
  is 
  raised 
  ; 
  the 
  

   front 
  bluntly 
  keeled. 
  Thorax 
  black, 
  shining 
  ; 
  the 
  pro- 
  

   jecting 
  middle 
  of 
  the 
  pronotum, 
  the 
  scutellar 
  keels, 
  the 
  

   scutellum 
  (except 
  at 
  the 
  apex), 
  the 
  post-scutellum 
  and 
  its 
  

   lateral 
  keels, 
  a 
  large 
  mark, 
  rounded 
  at 
  the 
  base, 
  incised 
  

   on 
  the 
  inner 
  side 
  at 
  the 
  apex, 
  a 
  large 
  mark 
  on 
  either 
  side 
  

   of 
  the 
  apex 
  of 
  the 
  median 
  segment, 
  produced 
  into 
  a 
  nar- 
  

   rowed 
  point 
  on 
  the 
  inner 
  side 
  at 
  the 
  top 
  and 
  bottom, 
  the 
  

   tubercles, 
  a 
  large 
  mark 
  on 
  the 
  base 
  of 
  the 
  mesopleurao 
  

   next 
  the 
  sternum, 
  narrowed 
  roundly 
  above 
  towards 
  the 
  

   apex, 
  and 
  a 
  curved 
  mark 
  on 
  the 
  sides 
  of 
  the 
  mesosternum, 
  

   lemcn-yellow. 
  Mesonotum 
  smooth 
  and 
  shining; 
  the 
  

   middle 
  lobe 
  is 
  distinctly 
  raised 
  and 
  separated 
  from 
  the 
  

   lateral 
  ; 
  its 
  apex 
  is 
  bordered 
  on 
  the 
  depression 
  by 
  six 
  

   short, 
  stout, 
  keels. 
  The 
  depression 
  at 
  the 
  sides 
  of 
  the 
  

   post-scutellum 
  is 
  stoutly 
  keeled, 
  the 
  median 
  segment 
  is 
  

   smooth 
  at 
  the 
  base 
  ; 
  the 
  rest 
  stoutly 
  and 
  closely 
  trans- 
  

   versely 
  striated. 
  The 
  propleurai 
  stoutly 
  longitudinally 
  

   striated 
  ; 
  the 
  mesopleurae 
  more 
  closely 
  striated 
  at 
  the 
  base 
  

  

  