﻿104 
  Cameron, 
  Hymenoptera 
  Orientalia. 
  

  

  and 
  a 
  somewhat 
  triangular 
  oblique 
  mark 
  in 
  front 
  

   of 
  the 
  hinder 
  coxae, 
  yellow. 
  Mesonotum 
  distinctly, 
  but 
  

   not 
  closely, 
  punctured 
  ; 
  there 
  are 
  no 
  furrows. 
  Scutellum 
  

   roundly 
  convex, 
  yellow, 
  black 
  round 
  the 
  edges, 
  more 
  

   sparsely 
  punctured 
  than 
  the 
  mesonotum. 
  Post-scutellum 
  

   impunctate, 
  bare, 
  obliquely 
  widened 
  towards 
  the 
  apex 
  ; 
  

   its 
  base 
  distinctly 
  separated 
  from 
  the 
  scutellum. 
  Median 
  

   segment 
  with 
  a 
  gradually 
  rounded 
  slope, 
  closely, 
  rather 
  

   strongly 
  and 
  uniformly 
  punctured, 
  and 
  thickly 
  covered 
  

   with 
  short 
  white 
  hair. 
  Pleurae 
  closely 
  punctured, 
  the 
  base 
  

   of 
  the 
  propleurae, 
  and 
  the 
  apex 
  of 
  the 
  mesopleurae 
  

   on 
  the 
  lower 
  half, 
  smooth 
  and 
  impunctate. 
  Meso- 
  

   sternum 
  closely 
  punctured, 
  the 
  central 
  furrow 
  shallow. 
  

   The 
  four 
  front 
  legs 
  are 
  pale 
  rufo-fulvous 
  ; 
  the 
  coxae 
  and 
  

   trochanters 
  are 
  pallid 
  yellow 
  ; 
  the 
  hinder 
  coxae, 
  trochan- 
  

   ters 
  and 
  femora, 
  bright 
  rufous 
  ; 
  the 
  tibiae 
  fuscous, 
  darker 
  

   above, 
  white 
  at 
  the 
  base 
  ; 
  the 
  tarsi 
  black, 
  the 
  meta- 
  

   tarsus 
  white 
  to 
  near 
  the 
  middle. 
  Wings 
  short, 
  as 
  long 
  

   as 
  the 
  abdomen; 
  hyaline, 
  slightly 
  smoky 
  at 
  the 
  base; 
  

   the 
  areolet 
  triangular, 
  the 
  nervures 
  uniting 
  at 
  the 
  top, 
  

   not 
  appendiculate 
  ; 
  the 
  recurrent 
  nervure 
  is 
  received 
  

   shortly 
  in 
  front 
  of 
  the 
  second 
  transverse 
  cubital, 
  almost 
  

   interstitial 
  ; 
  the 
  transverse 
  median 
  nervure 
  is 
  received 
  

   shortly 
  in 
  front 
  of 
  the 
  transverse 
  basal. 
  Abdomen 
  smooth 
  

   and 
  shining 
  ; 
  the 
  basal 
  half 
  of 
  the 
  petiole, 
  the 
  base 
  of 
  the 
  

   second, 
  third 
  and 
  fourth, 
  and 
  the 
  apices 
  of 
  the 
  two 
  apical 
  

   segments, 
  pale 
  yellow. 
  

  

  The 
  TrypJionidcs 
  are 
  very 
  numerous 
  in 
  the 
  northern 
  

   parts 
  of 
  the 
  Palaearctic 
  and 
  probably 
  also 
  in 
  the 
  Nearctic 
  

   zoological 
  regions, 
  but 
  are 
  little 
  known 
  outside 
  them. 
  

   A 
  large 
  number 
  are 
  known 
  to 
  be 
  parasites 
  on 
  Tenthredinidcs. 
  

  

  Mesoleptus 
  khasianus, 
  sp. 
  nov. 
  

   Niger; 
  abdomine 
  rufo^petiolo 
  nigro 
  ; 
  pedibus 
  anterioribus 
  

  

  