﻿64 
  Eev. 
  T. 
  A. 
  Marshall's 
  Monograph 
  of 
  

  

  5. 
  Biosteres 
  hlandus, 
  Ha,]. 
  

  

  . 
  Opius 
  hlandus, 
  Hal., 
  Ent. 
  Mag., 
  iv., 
  220, 
  3 
  2 
  . 
  

  

  5 
  . 
  Black 
  ; 
  abdomen 
  partly 
  rufous. 
  Head 
  very 
  broad, 
  rufous, 
  

   orbits 
  .and 
  cheeks 
  more 
  obscure, 
  stemmaticum 
  black; 
  face 
  punc- 
  

   tate, 
  with 
  a 
  medial 
  carina 
  ; 
  clj'ijeus 
  hairy, 
  rufous, 
  touching 
  the 
  

   mandibles; 
  palpi 
  rather 
  short, 
  testaceous. 
  Antennae 
  shorter 
  than 
  

   the 
  body, 
  black, 
  the 
  scape 
  rufous 
  beneath. 
  Thorax 
  smooth 
  and 
  

   shining 
  ; 
  mesothoracic 
  sutures 
  inchoate. 
  Scutellum 
  coarsely 
  

   punctate 
  at 
  the 
  apex, 
  preceded 
  by 
  a 
  small 
  fovea. 
  Mesopleurse 
  

   with 
  a 
  wide 
  cancellated 
  furrow. 
  Metathorax 
  rugulose, 
  smoother 
  

   in 
  the 
  middle. 
  Wings 
  hyaline 
  ; 
  squamula 
  testaceous 
  ; 
  nervures 
  

   fuscous 
  ; 
  stigraa 
  fusco 
  -testaceous, 
  eraitting 
  the 
  radius 
  nearly 
  in 
  the 
  

   middle. 
  Legs 
  short, 
  rufo-testaceous 
  ; 
  femora 
  stout 
  ; 
  extreme 
  apex 
  

   of 
  the 
  hind 
  tibiae, 
  and 
  their 
  tarsi, 
  fuscous. 
  Abdomen 
  ovate; 
  1st 
  

   segment 
  black, 
  hardly 
  narrowed 
  at 
  the 
  base, 
  rugulose, 
  with 
  a 
  

   longitudinal 
  carina, 
  which 
  is 
  bifurcate 
  at 
  the 
  base 
  ; 
  2d 
  and 
  

   following 
  segments 
  rufo-piceous 
  ; 
  3d 
  and 
  following 
  segments 
  banded 
  

   with 
  black. 
  Terebra 
  concealed. 
  ^ 
  . 
  Larger 
  than 
  the 
  J 
  , 
  the 
  

   rufous 
  portions 
  clearer 
  ; 
  head 
  rufous, 
  stemmaticum 
  and 
  occiput 
  

   black; 
  antennae 
  hardly 
  shorter 
  than 
  the 
  body, 
  41-jointed; 
  abdo- 
  

   men 
  more 
  oblong, 
  2d 
  segment 
  rufous, 
  the 
  rest 
  fuscous. 
  Length 
  

   hardly 
  2 
  lines. 
  

  

  Described 
  by 
  Plaliday 
  from 
  one 
  ? 
  and 
  a 
  few 
  males 
  

   taken 
  iu 
  May 
  on 
  willows 
  in 
  North 
  Ireland. 
  Forster 
  has 
  

   made 
  of 
  this 
  species 
  a 
  separate 
  genus 
  Chilotrichia, 
  on 
  

   account 
  of 
  the 
  hairiness 
  of 
  the 
  clypeus. 
  

  

  6. 
  Biosteres 
  ri(stiais, 
  Hal. 
  

   Opius 
  rusticus, 
  Hal., 
  Ent. 
  Mag 
  , 
  iv., 
  218, 
  ? 
  . 
  

  

  Black 
  ; 
  clypeus 
  and 
  mandibles 
  testaceous 
  ; 
  mouth 
  closed. 
  An- 
  

   tennae 
  3 
  much 
  longer 
  than 
  the 
  body, 
  slender, 
  o8-jointed, 
  black, 
  

   the 
  scape 
  rufous 
  ; 
  antennae 
  of 
  the 
  J 
  not 
  described. 
  Prothorax 
  

   and 
  mesopleurse 
  vaguely 
  punctate 
  with 
  large 
  punctures 
  ; 
  the 
  latter 
  

   impressed 
  with 
  a 
  rugose 
  furrow. 
  Mesothorax 
  rugulose 
  iu 
  front, 
  

   the 
  sutures 
  subcomplete, 
  punctate. 
  A 
  foveola 
  before 
  the 
  scutellum, 
  

   which 
  is 
  punctate 
  at 
  the 
  apex. 
  Metathorax 
  rugose. 
  "Wings 
  

   hyaline; 
  squamula 
  rufo-testaceous; 
  stigma 
  and 
  nervures 
  fuscous; 
  

   stigma 
  very 
  long 
  and 
  narrow, 
  emitting 
  the 
  radius 
  from 
  a 
  point 
  

   just 
  before 
  the 
  middle 
  ; 
  1st 
  abscissa 
  longer 
  than 
  the 
  thickness 
  of 
  

   the 
  stigma. 
  Legs 
  testaceous. 
  The 
  rest 
  of 
  the 
  characters 
  are 
  those 
  

   of 
  carhonariiis 
  (sp. 
  1), 
  Length, 
  1^; 
  wings, 
  34- 
  lines. 
  

  

  