﻿20 
  CAMERON, 
  Hymenoptera 
  Orientalia. 
  

  

  received 
  in 
  the 
  middle. 
  Abdomen 
  black 
  ; 
  the 
  sides 
  and 
  

   apices 
  of 
  the 
  segments 
  and 
  the 
  ventral 
  surface 
  yellowish. 
  

  

  Etha 
  L.EVIFRONS, 
  sp. 
  nov. 
  

  

  O 
  

   Long. 
  15 
  ; 
  terebra 
  5 
  mm. 
  $ 
  . 
  

  

  Agrees 
  closely 
  in 
  form, 
  size, 
  and 
  coloration, 
  with 
  

   E. 
  stratifrons 
  ; 
  may 
  be 
  known 
  from 
  it 
  by 
  the 
  front 
  being 
  

   smooth, 
  not 
  striated, 
  by 
  the 
  mesonotum 
  being 
  alutaceous, 
  

   not 
  punctured, 
  by 
  the 
  pronotum 
  being 
  entirely 
  black, 
  by 
  

   the 
  scutellum 
  being 
  more 
  widely 
  yellow, 
  the 
  oblique 
  base 
  

   only 
  being 
  black, 
  and 
  by 
  the 
  apex 
  of 
  the 
  median 
  segment 
  

   being 
  not 
  so 
  strongly 
  punctured, 
  being 
  almost 
  smooth, 
  

   and 
  it 
  bears 
  distinct 
  teeth 
  on 
  the 
  sides. 
  

  

  Head 
  black 
  ; 
  the 
  face, 
  clypeus, 
  labrum, 
  mandibles, 
  

   palpi, 
  a 
  large 
  mark, 
  triangularly 
  narrowed 
  on 
  the 
  lower 
  

   side, 
  on 
  the 
  inner 
  orbits 
  above, 
  and 
  the 
  lower 
  orbits 
  on 
  

   the 
  outer 
  side, 
  yellow 
  ; 
  the 
  front 
  and 
  vertex 
  have 
  a 
  

   plumbeous 
  hue, 
  and 
  are 
  smooth 
  and 
  shining 
  ; 
  the 
  front 
  

   is 
  depressed 
  in 
  the 
  middle 
  ; 
  the 
  lower 
  ocellus 
  is 
  surrounded 
  

   by 
  a 
  deep 
  furrow 
  ; 
  the 
  inner 
  orbits 
  are 
  sharply 
  margined. 
  

   The 
  face 
  is 
  closely 
  punctured, 
  thickly 
  covered 
  with 
  white 
  

   hair 
  ; 
  the 
  clypeus 
  is 
  sparsely 
  punctured. 
  Thorax 
  black, 
  

   with 
  a 
  distinct 
  plumbeous 
  hue 
  that 
  is 
  less 
  distinct 
  on 
  

   the 
  mesonotum, 
  which 
  is 
  dull 
  in 
  tint 
  and 
  thickly 
  covered 
  

   with 
  short, 
  pale 
  pubescence 
  ; 
  the 
  furrows 
  distinct, 
  smooth. 
  

   Scutellum 
  yellow, 
  except 
  at 
  the 
  base, 
  and 
  covered 
  with 
  

   longish 
  pale 
  hair 
  ; 
  post-scutellum 
  smooth, 
  yellow, 
  black 
  

   and 
  largely 
  bifoveate 
  at 
  the 
  base 
  ; 
  the 
  lateral 
  depression 
  

   strongly 
  striated 
  at 
  the 
  apex. 
  The 
  basal 
  region 
  of 
  the 
  

   median 
  segment 
  smooth 
  ; 
  the 
  basal 
  transverse 
  keel 
  is 
  

   narrowly 
  bent 
  backwards 
  in 
  the 
  middle 
  ; 
  the 
  second 
  is 
  

   more 
  broadly 
  bent 
  backwards 
  ; 
  between 
  the 
  two 
  keels 
  on 
  

   either 
  side 
  of 
  the 
  middle 
  are 
  some 
  transverse 
  keels 
  which 
  

   become 
  gradually 
  longer 
  ; 
  the 
  second 
  keel 
  becomes 
  raised 
  

  

  