﻿32 
  Rev. 
  T. 
  A. 
  Marehairs 
  Monograph 
  of 
  

  

  pygmceator 
  (sp. 
  3) 
  by 
  the 
  punctiform 
  impression 
  before 
  

   the 
  scutellum, 
  and 
  by 
  the 
  insertion 
  of 
  the 
  recurrent 
  

   nervure. 
  Taken 
  by 
  HaHday 
  sparingly 
  in 
  North 
  Ireland, 
  

   and 
  by 
  Capron 
  at 
  Shiere, 
  near 
  Guildford 
  ; 
  to 
  the 
  latter 
  

   I 
  am 
  indebted 
  for 
  two 
  ? 
  specimens. 
  Wesmael 
  possessed 
  

   5 
  Belgian 
  examples, 
  2 
  belonging 
  to 
  the 
  variety. 
  

  

  17. 
  Opius 
  ochrogaster, 
  Wesm. 
  

  

  O. 
  ochrogaster, 
  Wesm., 
  Nouv. 
  Mem. 
  Ac. 
  Brux., 
  1835, 
  

   p. 
  129, 
  ? 
  , 
  pi. 
  ii., 
  fig. 
  8 
  (wing). 
  

  

  Black 
  ; 
  abdomen, 
  after 
  the 
  1st 
  segment, 
  testaceous. 
  Face 
  dis- 
  

   tinctly 
  carinated 
  ; 
  clypeus 
  testaceous, 
  reaching 
  the 
  mandibles 
  and 
  

   closing 
  the 
  mouth 
  ; 
  mandibles 
  and 
  palpi 
  testaceous. 
  Antennae 
  

   longer 
  than 
  the 
  body, 
  26 
  — 
  28-jointed, 
  dull 
  testaceous, 
  fuscescent 
  

   towards 
  the 
  apex. 
  Mesothoracic 
  sutures 
  faintly 
  indicated 
  in 
  front. 
  

   A 
  punctiform 
  impression 
  before 
  the 
  scutellum. 
  Mesopleurse 
  with 
  

   no 
  visible 
  furrow. 
  Metathorax 
  granulated, 
  dull. 
  Wings 
  hyaline, 
  

   stigma 
  and 
  nervures 
  dull 
  testaceous 
  ; 
  stigma 
  forming 
  a 
  shorter 
  and 
  

   broader 
  oval 
  than 
  in 
  0. 
  cingulatus 
  and 
  macuUpes 
  (spp. 
  20, 
  19), 
  

   and 
  emitting 
  the 
  radius 
  from 
  a 
  point 
  nearer 
  the 
  middle 
  ; 
  but 
  the 
  

   chief 
  distinction 
  lies 
  in 
  the 
  direction 
  of 
  the 
  radius 
  — 
  this 
  makes 
  a 
  

   blimt 
  angle 
  at 
  the 
  2d 
  intercubital 
  nervure, 
  hardly 
  greater 
  than 
  a 
  

   right 
  angle, 
  and 
  proceeds 
  thence 
  to 
  the 
  margin 
  far 
  from 
  the 
  

   extremity, 
  and 
  rather 
  on 
  the 
  upper 
  side 
  of 
  the 
  wing 
  ; 
  2d 
  cubital 
  

   areolet 
  short, 
  attenuated 
  outwards 
  ; 
  podiscoidal 
  areolet 
  open 
  at 
  the 
  

   extremity 
  ; 
  recurrent 
  nervure 
  evected. 
  Legs 
  testaceous. 
  First 
  

   abdominal 
  segment 
  black, 
  longitudinally 
  rugulose 
  ; 
  the 
  foUowiug 
  

   segments 
  in 
  the 
  $ 
  testaceous, 
  in 
  the 
  ^ 
  the 
  3d 
  and 
  following 
  seg- 
  

   ments 
  are 
  broadly 
  fascescent 
  on 
  the 
  hind 
  margin. 
  Terebra 
  sub- 
  

   exserted. 
  Length, 
  1 
  — 
  1^ 
  ; 
  wings, 
  3 
  — 
  3^ 
  lines. 
  

  

  I 
  have 
  met 
  with 
  both 
  sexes 
  of 
  this 
  species 
  at 
  Milford 
  

   Haven 
  and 
  in 
  Leicestershire 
  ; 
  it 
  was 
  not 
  known 
  to 
  Hali- 
  

   day, 
  and 
  Wesmael 
  described 
  it 
  from 
  a 
  smgle 
  Belgian 
  

   specimen. 
  It 
  is 
  easily 
  mistaken 
  for 
  maculipes 
  or 
  cingu- 
  

   latus, 
  but 
  can 
  be 
  distinguished 
  by 
  the 
  wings 
  ; 
  compare 
  

   O. 
  nitidulator 
  (sp. 
  25), 
  in 
  which 
  the 
  radius 
  takes 
  the 
  

   same 
  direction. 
  

  

  18. 
  Opius 
  compar, 
  n. 
  sp. 
  

  

  Testaceus, 
  mesothorace, 
  metathorace, 
  et 
  abdominis 
  segmento 
  

   Imo 
  nigris. 
  Caput 
  crassiusculum, 
  facie 
  non 
  carinata. 
  Clypeus 
  

   valde 
  transversus, 
  autice 
  rectus, 
  mandibulas 
  apice 
  uigras 
  modo 
  non 
  

  

  