﻿Manchester 
  Memoirs, 
  Vol. 
  xliii. 
  (1899), 
  No. 
  3. 
  19 
  

  

  coxae 
  and 
  a 
  longer 
  one, 
  enclosing 
  the 
  spiracles, 
  over 
  the 
  

   hinder 
  pair, 
  yellowish-white. 
  The 
  mesosternum 
  is 
  closely 
  

   punctured, 
  thickly 
  covered 
  with 
  short, 
  pale 
  hair, 
  and 
  bears 
  

   two 
  large, 
  white 
  marks 
  on 
  the 
  apex. 
  The 
  front 
  legs 
  are 
  

   white, 
  lined 
  with 
  black 
  behind 
  ; 
  the 
  four 
  hinder 
  legs 
  bright 
  

   ferruginous, 
  their 
  coxae 
  black 
  in 
  front, 
  the 
  middle 
  troc- 
  

   hanters 
  yellow. 
  Wings 
  almost 
  uniformly 
  violaceous, 
  if 
  

   anything 
  paler 
  at 
  the 
  base. 
  The 
  base 
  and 
  apex 
  of 
  the 
  

   abdomen 
  black, 
  with 
  a 
  violaceous 
  tinge, 
  the 
  middle 
  

   ferruginous. 
  

  

  u 
  ^Tenthredo 
  COMPRESSICORNIS, 
  Sp. 
  110V. 
  

  

  Nigra; 
  capite 
  thoraceque 
  albomaculatis 
  ; 
  antennis 
  m'gris, 
  

   medio 
  albis 
  ; 
  pedibus 
  pallide 
  fulvis, 
  basi 
  coxarum 
  nigro 
  ; 
  

   a/is 
  violaceis. 
  

  

  Long, 
  to 
  apex 
  of 
  first 
  abdominal 
  segment, 
  7 
  mm. 
  

  

  Antennas 
  black,the 
  apical 
  half 
  of 
  the 
  fourth 
  and 
  the 
  fifth 
  

   joints, 
  except 
  at 
  the 
  apex, 
  white. 
  Head 
  shining, 
  impunc- 
  

   tate; 
  the 
  frontal 
  area 
  large, 
  rounded 
  at 
  the 
  top; 
  depressed, 
  

   raised 
  in 
  the 
  middle; 
  the 
  vertex 
  distinctly 
  raised; 
  a 
  

   narrow, 
  but 
  deep, 
  furrow 
  behind 
  the 
  ocelli; 
  the 
  face, 
  

   inner 
  orbits 
  narrowly, 
  the 
  outer, 
  especially 
  below, 
  more 
  

   broadly; 
  the 
  sides 
  of 
  the 
  clypeus 
  at 
  the 
  base; 
  the 
  labrum 
  

   and 
  the 
  base 
  of 
  the 
  mandibles, 
  yellowish-white; 
  the 
  black 
  

   apex 
  of 
  the 
  clypeus 
  has 
  a 
  curved 
  incision. 
  Thorax 
  black 
  ; 
  

   the 
  edge 
  of 
  the 
  pronotum, 
  broadly 
  behind, 
  more 
  narrowly 
  

   at 
  the 
  base, 
  the 
  apex 
  of 
  the 
  middle 
  lobe 
  of 
  the 
  mesonotum, 
  

   the 
  sides 
  of 
  the 
  lateral 
  lobes 
  on 
  the 
  inner 
  sides 
  opposite 
  

   it 
  ; 
  the 
  scutellum, 
  postscutellum, 
  a 
  large 
  mark 
  on 
  the 
  base 
  

   of 
  the 
  mesopleurae 
  above, 
  narrowed 
  at 
  the 
  base 
  below, 
  a 
  

   smaller 
  mark, 
  pear-shaped, 
  on 
  the 
  apex 
  lower 
  down, 
  a 
  small 
  

   mark 
  on 
  the 
  base 
  of 
  the 
  metapleurae 
  above 
  and 
  a 
  larger 
  

   one 
  over 
  the 
  coxae, 
  pale 
  yellow. 
  Mesonotum 
  closely 
  punc- 
  

   tured; 
  the 
  scutellum 
  smooth, 
  its 
  apex 
  covered 
  with 
  short, 
  

  

  