﻿198 
  Cameron, 
  Hymenoptera 
  Orientalia. 
  

  

  ventral 
  surface 
  from 
  the 
  petiole 
  whitish 
  yellow; 
  the 
  hypo- 
  

   pygium 
  also 
  yellowish, 
  narrowly 
  lined 
  with 
  black 
  down 
  

   the 
  middle. 
  

  

  MACROGASTER 
  FERRUGINEUS, 
  sp. 
  nov. 
  

  

  Ferrugineus 
  ; 
  flagello 
  antennarum 
  pedibusque 
  p 
  ostitis 
  

   nigris 
  ; 
  alts 
  kyaltms, 
  apice 
  fumatis. 
  6 
  . 
  

  

  Long. 
  9 
  mm. 
  

  

  Antennae 
  nearly 
  as 
  long 
  as 
  the 
  body, 
  the 
  scape 
  clear, 
  

   the 
  base 
  of 
  the 
  flagellum 
  rufous 
  ; 
  the 
  scape 
  sparsely 
  

   covered 
  with 
  long, 
  fuscous, 
  the 
  flagellum 
  more 
  densely 
  

   with 
  short, 
  black 
  hair. 
  Head 
  yellow, 
  except 
  the 
  front 
  

   broadly 
  in 
  the 
  middle, 
  the 
  vertex 
  and 
  the 
  upper 
  part 
  of 
  

   the 
  occiput 
  which 
  are 
  black 
  ; 
  the 
  face 
  strongly 
  punctured, 
  

   thickly 
  covered 
  with 
  pale, 
  fuscous 
  hair, 
  its 
  lower 
  part 
  

   stoutly 
  keeled 
  in 
  the 
  middle 
  ; 
  the 
  clypeus 
  broadly 
  

   depressed 
  in 
  the 
  middle, 
  its 
  apex 
  smooth. 
  Mandibles 
  

   black, 
  smooth, 
  yellow, 
  its 
  apex 
  black 
  ; 
  the 
  palpi 
  pale 
  

   yellow, 
  thickly 
  covered 
  with 
  long, 
  white 
  hair. 
  The 
  inner 
  

   orbits 
  are 
  raised 
  between 
  the 
  base 
  of 
  the 
  antennae 
  and 
  the 
  

   lower 
  ocellus 
  ; 
  above 
  they 
  are 
  bordered 
  by 
  a 
  deep 
  and 
  

   wide 
  furrow 
  ; 
  the 
  vertex 
  is 
  covered 
  with 
  large, 
  deep, 
  clearly 
  

   separated 
  punctures 
  ; 
  the 
  front 
  is 
  aciculated, 
  sharply 
  

   keeled 
  down 
  the 
  middle 
  ; 
  the 
  keel 
  extending 
  to 
  below 
  

   the 
  antennae 
  and 
  bifurcated 
  at 
  the 
  top. 
  Mesonotum 
  closely 
  

   punctured 
  ; 
  the 
  depression 
  at 
  the 
  apex 
  of 
  the 
  middle 
  lobe 
  

   with 
  four 
  stout, 
  longitudinal 
  keels 
  ; 
  there 
  is 
  a 
  shallow, 
  

   narrow 
  furrow 
  down 
  the 
  middle 
  of 
  the 
  lateral 
  lobes. 
  The 
  

   scutellum 
  punctured 
  all 
  over, 
  but 
  not 
  quite 
  so 
  strongly 
  

   as 
  the 
  mesonotum 
  ; 
  its 
  apex, 
  and 
  the 
  postscutellum 
  have 
  

   a 
  yellowish 
  tinge 
  ; 
  the 
  latter 
  is 
  smooth 
  ; 
  the 
  depression 
  

   at 
  its 
  side 
  closely 
  striated 
  at 
  the 
  base 
  ; 
  its 
  apex 
  distinctly 
  

   keeled. 
  The 
  median 
  segment 
  has 
  three 
  basal 
  areas, 
  the 
  

   central 
  being 
  much 
  the 
  smaller 
  ; 
  the 
  outer 
  are 
  sparsely 
  

  

  