﻿Hymenoptera 
  Orientalis. 
  43 
  

  

  is 
  received 
  slightly 
  beyond 
  the 
  middle 
  of 
  the 
  radial 
  cellule. 
  

   Tibial 
  spurs 
  slender, 
  curved, 
  reaching 
  to 
  the 
  middle 
  of 
  the 
  

   metatarsus. 
  Abdominal 
  segments 
  lined 
  with 
  silvery 
  pubes- 
  

   cence. 
  Length 
  nearly 
  8 
  mm. 
  

  

  May 
  be 
  known 
  from 
  O. 
  argenteolineatiis 
  and 
  nitidus 
  by 
  

   the 
  reddish 
  legs 
  and 
  by 
  the 
  longer 
  and 
  thinner 
  calcaria. 
  

  

  -'-^XYBELUS 
  NITIDUS, 
  sp. 
  nov. 
  

  

  Head 
  smooth, 
  shining, 
  covered 
  with 
  a 
  silvery 
  pubescence, 
  

   very 
  densely 
  on 
  the 
  clypeus 
  and 
  cheeks, 
  the 
  front 
  excavated 
  

   in 
  the 
  middle, 
  glabrous. 
  Ocelli 
  in 
  a 
  curve, 
  the 
  hinder 
  

   separated 
  from 
  each 
  other 
  by 
  only 
  a 
  little 
  greater 
  distance 
  

   than 
  they 
  are 
  from 
  the 
  eyes. 
  A 
  curved, 
  oblique 
  shallow- 
  

   depression 
  runs 
  from 
  the 
  outer 
  ocelli 
  to 
  the 
  eyes. 
  Clypeus 
  

   broadly 
  convex, 
  yellow 
  ; 
  mandibles 
  yellow, 
  piceous-red 
  at 
  

   the 
  apex, 
  eyes 
  hairy. 
  Antennse 
  densely 
  covered 
  with 
  

   silvery 
  pubescence 
  ; 
  the 
  scape 
  yellow, 
  the 
  third 
  and 
  fourth 
  

   joints 
  equal. 
  Thorax 
  smooth, 
  shining, 
  covered 
  with 
  soft 
  

   pale 
  pubescence 
  ; 
  the 
  pronotum 
  transverse, 
  rounded 
  at 
  the 
  

   sides. 
  Mesopleural 
  furrow 
  crenulated 
  ; 
  medium 
  segment 
  atthe 
  

   base, 
  with 
  short 
  stout 
  keels, 
  bounded 
  by 
  a 
  narrow 
  keel 
  which 
  

   proceeds 
  to 
  the 
  apex, 
  the 
  sides 
  of 
  the 
  segment 
  being 
  also 
  

   keeled. 
  Metapleur^e 
  excavated 
  at 
  the 
  base, 
  smooth 
  and 
  

   shining. 
  There 
  is 
  a 
  small 
  oblong 
  fovea 
  on 
  the 
  metapleurai 
  

   behind, 
  a 
  line 
  on 
  the 
  pronotum, 
  tegulse, 
  tubercles, 
  a 
  large 
  mark 
  

   below 
  them, 
  a 
  mark 
  on 
  either 
  side 
  of 
  the 
  scutellum, 
  a 
  line 
  

   on 
  its 
  hinder 
  edge 
  at 
  the 
  sides 
  behind, 
  and 
  a 
  narrower 
  line 
  in 
  

   the 
  same 
  place 
  on 
  the 
  metanotum, 
  pale 
  yellow. 
  Abdomen 
  

   shining, 
  smooth 
  ; 
  a 
  small 
  mark 
  on 
  the 
  side 
  of 
  the 
  first 
  

   segment, 
  a 
  large 
  one 
  on 
  the 
  second, 
  none 
  on 
  the 
  third, 
  a 
  

   large 
  broad 
  one 
  on 
  the 
  fourth, 
  and 
  a 
  smaller 
  one 
  on 
  the 
  

   fifth, 
  pale 
  pellow 
  ; 
  pygidium 
  reddish 
  at 
  the 
  apex, 
  densely 
  

   covered 
  with 
  soft 
  pale 
  pubescence 
  and 
  punctured. 
  Length 
  

   7 
  mm. 
  

  

  