﻿Manchester 
  Memoirs, 
  Vol. 
  xliii. 
  (1899), 
  No. 
  3- 
  9/ 
  

  

  white 
  ; 
  the 
  mandibles 
  obscure 
  testaceous 
  ; 
  the 
  palpi 
  black 
  ; 
  

   the 
  face 
  shining, 
  covered 
  with 
  short, 
  black 
  hair 
  ; 
  the 
  

   labrum 
  obscure 
  testaceous 
  ; 
  the 
  front 
  and 
  vertex 
  shining, 
  

   impunctate 
  ; 
  the 
  front 
  somewhat 
  triangularly 
  raised 
  below 
  

   the 
  ocelli 
  ; 
  the 
  raised 
  part 
  being 
  depressed 
  in 
  the 
  middle. 
  

   The 
  prothorax 
  uniformly 
  rufous 
  ; 
  below 
  thickly 
  covered 
  

   with 
  long, 
  white 
  hair 
  ; 
  its 
  top 
  in 
  the 
  centre 
  is 
  raised 
  ; 
  

   below 
  it 
  is 
  a 
  stout, 
  oblique 
  keel. 
  Mesonotum 
  shining, 
  the 
  

   sides 
  obscurely 
  shagreened 
  ; 
  the 
  middle 
  lobe 
  clearly 
  

   separated 
  ; 
  the 
  scutellum 
  thickly 
  covered 
  with 
  short, 
  white 
  

   hair. 
  Median 
  segment 
  black, 
  thickly 
  covered 
  with 
  white 
  

   hair 
  ; 
  the 
  central 
  area 
  is 
  narrowed 
  at 
  the 
  base 
  and 
  apex 
  ; 
  

   there 
  is 
  a 
  stout, 
  transverse 
  keel 
  near 
  the 
  base, 
  and 
  another 
  

   shortly 
  beyond 
  the 
  middle. 
  The 
  upper 
  part 
  of 
  the 
  

   mesopleurse 
  largely 
  rufous 
  ; 
  the 
  black 
  lower 
  part 
  is 
  

   depressed 
  obliquely, 
  the 
  top 
  bearing 
  a 
  row 
  of 
  striations. 
  

   The 
  metapleurse 
  entirely 
  black 
  ; 
  the 
  oblique 
  furrow 
  at 
  the 
  

   base 
  is 
  wide 
  and 
  deep 
  ; 
  the 
  lower 
  half 
  is 
  coarsely 
  reticu- 
  

   lated. 
  The 
  wings 
  are 
  uniformly 
  coloured, 
  except 
  for 
  some 
  

   hyaline 
  clouds 
  at 
  the 
  base 
  of 
  the 
  stigma 
  in 
  the 
  cubital 
  and 
  

   discoidal 
  cellules. 
  There 
  are 
  two 
  distinct 
  bullae 
  in 
  the 
  

   recurrent 
  nervure 
  near 
  the 
  top, 
  the 
  part 
  between 
  them 
  

   being 
  elbowed 
  ; 
  the 
  second 
  transverse 
  cubital 
  nervure 
  is 
  

   bullated 
  below 
  the 
  middle 
  ; 
  the 
  branch 
  emitted 
  by 
  it 
  

   is 
  as 
  long 
  as 
  the 
  nervure 
  itself. 
  Abdomen 
  deep 
  black 
  ; 
  

   the 
  basal 
  ventral 
  segments 
  pale 
  testaceous 
  ; 
  the 
  petiole 
  

   is 
  longer 
  than* 
  the 
  second 
  segment 
  ; 
  its 
  basal 
  two-thirds 
  

   are 
  bordered 
  laterally 
  by 
  two 
  sharp 
  keels, 
  which 
  

   approach 
  each 
  other 
  near 
  the 
  base, 
  becoming 
  wider 
  

   apart 
  towards 
  the 
  apex, 
  the 
  space 
  between 
  being 
  

   hollowed 
  ; 
  its 
  apex 
  has 
  two 
  stout 
  central, 
  and 
  two 
  or 
  

   three 
  shorter 
  and 
  more 
  irregular 
  longitudinal 
  keels. 
  The 
  

   second 
  and 
  third 
  segments 
  are 
  stoutly 
  longitudinally 
  

   striolated, 
  the 
  latter 
  to 
  near 
  the 
  apex, 
  which 
  is 
  strongly 
  

  

  