﻿Manchester 
  Memoirs 
  > 
  Vol. 
  xliii. 
  (1899), 
  No. 
  3. 
  169 
  

  

  mark 
  becomes 
  narrowed 
  gradually 
  but 
  distinctly, 
  then 
  

   becomes 
  dilated 
  into 
  a 
  triangle, 
  which 
  at 
  its 
  apex, 
  is 
  

   slightly 
  wider 
  than 
  the 
  widest 
  part 
  of 
  the 
  basal 
  portion 
  ; 
  

   the 
  lateral 
  marks 
  are 
  slightly 
  wider 
  than 
  the 
  central 
  ; 
  

   they 
  are 
  as 
  long 
  as 
  the 
  basal 
  part 
  of 
  the 
  central 
  mark 
  ; 
  

   slightly 
  dilated 
  in 
  the 
  middle 
  on 
  the 
  outer 
  side, 
  and 
  

   oblique 
  at 
  the 
  apex. 
  Scutellum 
  pyramidal 
  ; 
  the 
  top 
  with 
  

   a 
  short, 
  transverse 
  keel-like 
  projection 
  ; 
  the 
  lateral 
  keels 
  

   large, 
  leaf-like 
  and 
  of 
  nearly 
  equal 
  height 
  throughout. 
  The 
  

   postcutellum 
  with 
  the 
  sides 
  bluntly 
  keeled. 
  Median 
  

   segment 
  smooth 
  ; 
  the 
  central 
  basal 
  area 
  almost 
  square 
  ; 
  

   from 
  its 
  centre 
  and 
  apex 
  two 
  stout 
  keels 
  run 
  to 
  the 
  sides 
  

   where 
  they 
  unite 
  with 
  a 
  longitudinal 
  keel, 
  thus 
  forming 
  

   two 
  lateral 
  areae 
  on 
  each 
  side. 
  Pleurae 
  very 
  smooth 
  and 
  

   shining 
  ; 
  on 
  the 
  metapleurae 
  is 
  a 
  curved 
  keel 
  in 
  the 
  middle. 
  

   Legs 
  stout, 
  thickly 
  covered 
  with 
  fulvous 
  hair 
  ; 
  on 
  the 
  

   apical 
  third 
  of 
  the 
  hind 
  femora, 
  on 
  the 
  inner 
  side 
  at 
  the 
  

   top, 
  is 
  a 
  black 
  mark, 
  which 
  is 
  dilated 
  below 
  on 
  the 
  lower 
  

   side; 
  the 
  base 
  of 
  the 
  hinder 
  tibiae, 
  the 
  extreme 
  base 
  of 
  the 
  

   tarsi 
  and 
  their 
  apical 
  joint, 
  black; 
  the 
  apices 
  of 
  the 
  four 
  

   anterior 
  claws 
  are 
  black. 
  Wings 
  hyaline, 
  the 
  apices 
  of 
  both 
  

   smoky; 
  the 
  nervures 
  and 
  stigma 
  black; 
  the 
  areolet 
  

   triangular, 
  slightly 
  appendiculated 
  ; 
  the 
  recurrent 
  nervure 
  

   is 
  received 
  almost 
  in 
  the 
  middle. 
  The 
  first 
  and 
  second 
  

   segments 
  of 
  the 
  abdomen 
  are 
  smooth 
  and 
  shining; 
  the 
  keel 
  

   on 
  the 
  sides 
  of 
  the 
  petiole 
  extends 
  to 
  the 
  middle 
  — 
  to 
  the 
  

   base 
  of 
  the 
  black 
  dot 
  ; 
  the 
  transverse, 
  curved 
  furrow 
  on 
  the 
  

   second 
  segment 
  is 
  longitudinally 
  striated 
  ; 
  those 
  on 
  the 
  

   other 
  segments 
  are 
  also 
  striated, 
  but 
  not 
  so 
  distinctly. 
  The 
  

   black 
  marks 
  on 
  the 
  petiole 
  small, 
  on 
  the 
  second 
  segment 
  

   slightly 
  larger 
  and 
  dilated 
  in 
  the 
  middle 
  at 
  the 
  apex; 
  on 
  

   the 
  third 
  and 
  fourth 
  larger, 
  on 
  the 
  fifth 
  and 
  sixth 
  still 
  larger, 
  

   broader, 
  being 
  distinctly 
  broader 
  than 
  they 
  are 
  long 
  ; 
  on 
  

   the 
  sixth 
  small 
  and 
  may 
  be 
  absent 
  ; 
  the 
  sixth 
  has 
  a 
  wide, 
  

  

  