﻿Manchester 
  Memoirs, 
  Vol. 
  xliv. 
  (1900), 
  No. 
  15. 
  95 
  

  

  Legs 
  stout 
  ; 
  the 
  tibire 
  and 
  tarsi 
  covered 
  densely 
  with 
  

   short 
  thick 
  hair; 
  the 
  outer 
  fork 
  of 
  the 
  claws 
  is 
  long 
  and 
  

   curved 
  ; 
  the 
  basal 
  one 
  shorter 
  and 
  thicker. 
  

  

  Comes 
  nearest 
  to 
  Microdus 
  ; 
  may 
  be 
  known 
  from 
  it 
  

   by 
  the 
  square 
  second 
  cubital 
  cellule 
  ; 
  by 
  the 
  second 
  

   transverse 
  cubital 
  nervure 
  emitting 
  a 
  short 
  thick 
  branch 
  ; 
  

   and 
  by 
  the 
  mesonotum 
  being 
  more 
  distinctly 
  and 
  deeply 
  

   trilobate. 
  The 
  transverse 
  probrachial 
  nervure 
  is 
  inter- 
  

   stitial 
  ; 
  the 
  recurrent 
  nervure 
  is 
  received 
  shortly 
  in 
  front 
  

   of 
  the 
  first 
  transverse 
  cubital. 
  

  

  J 
  

  

  Oreba 
  PURPUREA, 
  Sp. 
  nov. 
  

  

  Purpurea, 
  facie 
  coerulea 
  ; 
  antennis 
  tarsisque 
  nigris 
  ; 
  

   alls 
  fusco-violaceis. 
  $ 
  . 
  

  

  Long. 
  13 
  mm. 
  

  

  Antennae 
  not 
  much 
  longer 
  than 
  the 
  head 
  and 
  thorax 
  ; 
  

   distinctly 
  tapering 
  towards 
  the 
  apex, 
  thickly 
  covered 
  with 
  

   stiff 
  black 
  pubescence. 
  Face 
  and 
  clypeus 
  indigo-blue, 
  

   spotted 
  at 
  the 
  sides 
  and 
  top 
  with 
  black 
  ; 
  the 
  face 
  carinate 
  ; 
  

   the 
  sides 
  of 
  the 
  keel 
  broad, 
  oblique 
  ; 
  the 
  sides 
  and 
  upper 
  

   part 
  thickly 
  covered 
  with 
  short 
  white 
  pubescence; 
  the 
  

   clypeal 
  foveae 
  large, 
  deep. 
  Mandibles 
  black, 
  shining. 
  

   Thorax 
  bright 
  purple, 
  shining 
  ; 
  the 
  pleurae 
  and 
  meta- 
  

   notum 
  sparsely 
  covered 
  with 
  white 
  hair 
  ; 
  the 
  mesonotum 
  

   punctured, 
  but 
  not 
  closely 
  ; 
  its 
  base 
  transverse, 
  rounded 
  

   laterally 
  ; 
  the 
  middle 
  lobe 
  is 
  large, 
  its 
  apex 
  triangular, 
  

   obliquely 
  depressed 
  ; 
  the 
  sides 
  of 
  the 
  lateral 
  lobes 
  at 
  the 
  

   apex 
  have 
  also 
  an 
  oblique 
  slope 
  ; 
  there 
  are 
  two 
  straight 
  

   furrows 
  in 
  the 
  centre 
  of 
  the 
  middle 
  lobe 
  which 
  reach 
  to 
  

   the 
  base 
  of 
  the 
  apical 
  slope. 
  Scutellum 
  roundly 
  convex 
  ; 
  

   sparsely 
  punctured 
  ; 
  the 
  basal 
  depression 
  large, 
  smooth, 
  

   and 
  bearing 
  three 
  longitudinal 
  keels 
  ; 
  the 
  post-scutellum 
  

   closely 
  punctured. 
  The 
  base 
  of 
  the 
  metanotum 
  depressed 
  ; 
  

   in 
  the 
  middle 
  is 
  a 
  distinctly 
  defined 
  area, 
  slightly 
  wider 
  

  

  