﻿Manchester 
  Memoirs, 
  Vol. 
  xliii. 
  ( 
  1 
  899), 
  No. 
  3. 
  1 
  7 
  

  

  The 
  radial 
  nervure 
  is 
  received 
  in 
  the 
  middle 
  of 
  the 
  third 
  

   cubital 
  cellule, 
  which 
  is 
  not 
  much 
  longer 
  than 
  the 
  third, 
  

   the 
  first 
  recurrent 
  nervure 
  is 
  received 
  in 
  the 
  middle, 
  the 
  

   second 
  in 
  the 
  basal 
  third 
  of 
  the 
  cellule. 
  Abdomen 
  black, 
  

   the 
  apices 
  of 
  the 
  basal 
  segments 
  olive-coloured. 
  

  

  " 
  Tenthredo 
  bicarinata, 
  sp. 
  nov. 
  

  

  Ferruginea 
  ; 
  apice 
  antennarum 
  lineisqne 
  duabus 
  meso- 
  

   noti 
  nigris 
  ; 
  alls 
  fusco-violaceis, 
  stigmate 
  nervisque 
  nigris. 
  $ 
  . 
  

  

  Long, 
  to 
  apex 
  of 
  first 
  abdominal 
  segment, 
  10 
  mm. 
  

  

  Antennae 
  rufous, 
  yellow 
  towards 
  the 
  middle 
  ; 
  the 
  

   apical 
  half 
  of 
  the 
  sixth 
  and 
  the 
  apical 
  three 
  joints 
  entirely 
  

   black. 
  Head 
  rufo-ferruginous, 
  the 
  base 
  of 
  the 
  clypeus 
  

   and 
  of 
  the 
  labrum, 
  the 
  lower 
  orbits 
  outside, 
  and 
  the 
  

   mandibles, 
  yellow 
  ; 
  the 
  apex 
  of 
  the 
  mandibles 
  black. 
  

   The 
  middle 
  of 
  the 
  vertex 
  bounded 
  by 
  two 
  deep, 
  narrow 
  

   furrows, 
  and 
  having 
  in 
  the 
  centre, 
  near 
  the 
  apex, 
  a 
  

   longitudinal, 
  not 
  very 
  clearly 
  defined, 
  keel 
  ; 
  outside 
  the 
  

   anterior 
  ocellus 
  is 
  a 
  narrow 
  keel 
  ; 
  from 
  the 
  apex 
  of 
  these, 
  

   on 
  the 
  inner 
  side, 
  a 
  stout 
  keel 
  runs 
  to 
  the 
  base 
  of 
  the 
  

   antennae. 
  The 
  incision 
  on 
  the 
  apex 
  of 
  the 
  clypeus 
  is 
  

   broad 
  and 
  not 
  very 
  deep 
  ; 
  the 
  hinder 
  edge 
  of 
  the 
  head 
  is 
  

   sharply 
  keeled 
  all 
  round. 
  Mesonotum 
  closely 
  punctured, 
  

   the 
  middle 
  lobe 
  furrowed 
  down 
  the 
  middle 
  ; 
  its 
  apex 
  

   lemon-yellow 
  ; 
  the 
  middle 
  lobes 
  are 
  broadly 
  black 
  on 
  the 
  

   outer 
  side, 
  and 
  covered 
  with 
  short, 
  black 
  hair. 
  Scutellum 
  

   sharply 
  pyramidal, 
  thickly 
  covered 
  with 
  longish, 
  black 
  

   hair, 
  the 
  top 
  smooth 
  and 
  shining, 
  the 
  post-scutellum 
  

   aciculated 
  and 
  with 
  only 
  a 
  few 
  punctures. 
  Propleurae 
  

   smooth, 
  impunctate, 
  black, 
  except 
  on 
  the 
  top, 
  and 
  more 
  

   narrowly 
  at 
  the 
  base 
  and 
  apex. 
  Mesopleurse 
  rugosely 
  

   punctured, 
  most 
  coarsely 
  on 
  the 
  lower 
  side 
  ; 
  tuberculated 
  

   and 
  keeled 
  on 
  the 
  lower 
  edge 
  at 
  the 
  base 
  and 
  more 
  

   distinctly 
  behind, 
  the 
  apex 
  excavated, 
  black 
  above, 
  the 
  

  

  