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

  

  TENTHREDO 
  CAERULEA, 
  Sp. 
  110V. 
  

  

  Caerulea; 
  basi 
  mandibulorum, 
  labro 
  femoribusqne 
  subtus 
  

   albis 
  ; 
  alls 
  fusco-hy 
  a 
  linis, 
  fascia 
  substigmatali 
  fumata. 
  6. 
  

  

  Long. 
  12 
  mm. 
  

  

  Antennae 
  not 
  much 
  longer 
  than 
  the 
  abdomen, 
  dis- 
  

   tinctly 
  tapering 
  towards 
  the 
  apex, 
  the 
  basal 
  four 
  or 
  five 
  

   joints 
  blue, 
  tinged 
  with 
  purple, 
  the 
  apical 
  joints 
  black, 
  

   the 
  scape 
  closely 
  punctured, 
  sparsely 
  pilose 
  ; 
  the 
  flagellum 
  

   thickly 
  covered 
  with 
  short, 
  black 
  hair. 
  Head 
  smooth, 
  

   shining, 
  impunctate, 
  the 
  labrum 
  white; 
  the 
  occiput 
  sharply 
  

   margined 
  ; 
  the 
  vertex 
  roundly 
  raised 
  in 
  the 
  middle 
  ; 
  the 
  

   hinder 
  part 
  separated 
  by 
  an 
  oblique 
  depression 
  from 
  the 
  

   ocellar 
  region; 
  the 
  frontal 
  area 
  narrowed 
  behind, 
  the 
  sides 
  

   sharply 
  and 
  stoutly 
  keeled, 
  the 
  apex 
  more 
  depressed 
  and 
  

   with 
  a 
  raised 
  conical 
  piece 
  in 
  the 
  middle. 
  Clypeus 
  with 
  

   a 
  raised 
  semi-circular 
  incision, 
  smooth; 
  the 
  labrum 
  and 
  

   base 
  of 
  mandibles 
  thickly 
  covered 
  with 
  long, 
  white 
  hair 
  ; 
  

   the 
  mandibles 
  are 
  broadly 
  white 
  at 
  the 
  base 
  ; 
  the 
  apical 
  

   joints 
  of 
  the 
  palpi 
  are 
  white. 
  The 
  middle 
  lobe 
  of 
  the 
  

   mesonotum 
  is 
  raised, 
  with 
  a 
  slope 
  from 
  the 
  middle 
  to 
  the 
  

   base 
  and 
  apex, 
  the 
  former 
  being 
  the 
  shorter 
  and 
  steeper 
  ; 
  

   the 
  furrow 
  is 
  deep 
  ; 
  the 
  apex 
  sharply 
  triangular 
  ; 
  the 
  

   middle 
  lobe 
  bears 
  large, 
  deep 
  punctures, 
  all 
  clearly 
  sep- 
  

   arated 
  ; 
  the 
  lateral 
  lobes 
  are 
  less 
  distinctly 
  punctured. 
  

   Scutellum 
  pyramidal, 
  rounded 
  on 
  the 
  top 
  ; 
  sparsely 
  

   covered 
  with 
  large, 
  deep 
  punctures 
  ; 
  the 
  apex 
  with 
  a 
  

   more 
  oblique 
  slope 
  than 
  the 
  base. 
  The 
  base 
  of 
  the 
  

   metanotum 
  has 
  an 
  obliquely 
  rounded 
  slope, 
  the 
  top 
  of 
  

   which 
  is 
  roundly 
  raised, 
  the 
  sides 
  being 
  more 
  narrowly 
  

   roundly 
  raised 
  ; 
  the 
  apex 
  is 
  bluntly, 
  triangularly 
  raised 
  in 
  

   the 
  middle 
  and 
  sharply 
  separated 
  from 
  the 
  basal 
  part 
  of 
  

   the 
  segment 
  ; 
  the 
  sides 
  are 
  finely 
  striated 
  in 
  the 
  middle. 
  

   Propleurae 
  deeply 
  depressed 
  in 
  the 
  middle, 
  sharply 
  keeled 
  

   on 
  the 
  base. 
  Mesopleurse 
  smooth 
  at 
  the 
  base 
  and 
  apex 
  ; 
  

  

  