﻿58 
  Eev. 
  T. 
  A. 
  MsiYshaXVs 
  Monograph 
  oj 
  

  

  (4) 
  5. 
  Abdomen, 
  after 
  the 
  1st 
  segment, 
  in 
  great 
  

  

  part 
  rufo-testaceous 
  . 
  . 
  . 
  . 
  . 
  . 
  3. 
  fiilgida, 
  Hal. 
  

  

  (3) 
  6. 
  Second 
  abdominal 
  segment 
  and 
  great 
  part 
  

  

  of 
  the 
  third 
  deeply 
  striated 
  .. 
  ..4. 
  rugosa, 
  Wesm. 
  

  

  1. 
  Diachasma 
  coffer, 
  Wesm. 
  

  

  Ojnus 
  caffer, 
  Wesm., 
  Nouv. 
  Mem. 
  Ac. 
  Brux., 
  1835, 
  

   p. 
  150 
  ; 
  Hal., 
  Ent. 
  Mag., 
  iv., 
  217, 
  ^ 
  ? 
  . 
  

  

  Black, 
  shining 
  ; 
  face 
  strongly 
  carinated 
  ; 
  clypeus 
  short, 
  not 
  

   reaching 
  the 
  mandibles, 
  its 
  lower 
  edge 
  rounded 
  and 
  somewhat 
  

   raised 
  ; 
  mandibles 
  dull 
  rufous 
  in 
  the 
  middle, 
  scarcely 
  wider 
  at 
  the 
  

   base 
  ; 
  palpi 
  short, 
  black. 
  Antennae 
  ? 
  rather 
  shorter 
  than 
  the 
  

   body, 
  29-jointed 
  ; 
  of 
  the 
  ^ 
  somewhat 
  longer, 
  32-jointed 
  ; 
  all 
  the 
  

   joints 
  black, 
  short. 
  Mesothoracic 
  sutiu'es 
  inchoate. 
  A 
  large 
  oval 
  

   fovea 
  before 
  the 
  scutelhim. 
  Mesopleurse 
  smooth 
  and 
  shining, 
  with 
  

   hardly 
  a 
  fovea, 
  but 
  a 
  short 
  narrow 
  series 
  of 
  3 
  or 
  4 
  punctures. 
  

   Metathoras 
  smooth. 
  Wings 
  slightly 
  infuniated 
  ; 
  stigma 
  and 
  

   nervures 
  fuscous 
  ; 
  3d 
  abscissa 
  of 
  the 
  radius 
  subobsolete 
  towards 
  

   the 
  end 
  (c/. 
  Ademon 
  decrescens, 
  ante) 
  ; 
  if 
  complete, 
  it 
  would 
  reach 
  

   the 
  margin 
  of 
  the 
  wing 
  somewhat 
  before 
  the 
  extremity 
  ; 
  stigma 
  

   oval, 
  emitting 
  the 
  radius 
  from 
  the 
  middle 
  ; 
  2d 
  abscissa 
  much 
  

   shorter 
  than 
  the 
  1st 
  intercubital 
  nervure, 
  and 
  much 
  longer 
  than 
  

   the 
  2d 
  ; 
  recurrent 
  nervure 
  evected. 
  Hind 
  wings 
  with 
  a 
  distinct 
  

   pobrachial 
  transverse 
  nervure. 
  Legs 
  black 
  ; 
  base 
  of 
  hind 
  tibise 
  in 
  

   the 
  5 
  dull 
  rufous 
  ; 
  hind 
  femora 
  somewhat 
  iucrassated 
  and 
  com- 
  

   pressed 
  ; 
  sometimes 
  the 
  legs 
  are 
  dull 
  rufous, 
  the 
  femora 
  black 
  

   above, 
  and 
  the 
  tarsi 
  infuscated. 
  Abdomen 
  oval, 
  entirely 
  free 
  from 
  

   rugosity 
  ; 
  1st 
  segment 
  short, 
  with 
  two 
  lateral 
  channels, 
  the 
  disk 
  

   raised, 
  smooth 
  and 
  shining. 
  Terebra 
  exserted 
  to 
  the 
  extent 
  of 
  \ 
  of 
  

   the 
  abdomen. 
  Length, 
  1| 
  ; 
  wings, 
  3 
  lines. 
  

  

  Both 
  sexes 
  were 
  discovered 
  by 
  Wesmael 
  near 
  Brussels, 
  

   and 
  found 
  also 
  by 
  Walker 
  in 
  the 
  London 
  district 
  ; 
  I 
  have 
  

   taken 
  the 
  c? 
  in 
  Epping 
  Eorest. 
  

  

  2. 
  Diachasma 
  cephalotes, 
  Wesm. 
  

  

  Op'ius 
  cephalotes, 
  Wesm., 
  Nouv. 
  Mem. 
  Ac. 
  Brux., 
  1835, 
  

  

  p. 
  149, 
  ? 
  (not 
  of 
  Eatzeburg, 
  which 
  is 
  a 
  Ccno- 
  

  

  coelius) 
  . 
  

  

  Black 
  ; 
  vertical 
  and 
  occipital 
  orbits 
  of 
  the 
  eyes 
  rufous. 
  Head 
  

  

  large, 
  broader 
  than 
  the 
  thorax 
  ; 
  face 
  carinated, 
  vaguely 
  punctured 
  ; 
  

  

  clypeus 
  not 
  reaching 
  the 
  mandibles, 
  deplauate, 
  punctate, 
  ckcum- 
  

  

  scribed 
  by 
  an 
  impressed 
  semicircular 
  line, 
  its 
  lower 
  edge 
  straight. 
  

  

  