﻿Manchester 
  Memoirs, 
  Vol. 
  xlvii. 
  (1903), 
  No. 
  14. 
  17 
  

  

  second, 
  and 
  the 
  other 
  segments 
  broadly 
  testaceous 
  ; 
  the 
  

   testaceous 
  colour 
  more 
  extended 
  on 
  the 
  apical 
  ones. 
  

  

  ETHA, 
  gen. 
  nov. 
  

  

  Areolet 
  quadrangular, 
  large 
  ; 
  below 
  scarcely 
  angled 
  ; 
  

   the 
  transverse 
  cubital 
  nervures 
  parallel 
  ; 
  the 
  recurrent 
  

   nervure 
  received 
  in 
  the 
  middle 
  ; 
  the 
  third 
  discoidal 
  cellule 
  

   elongate, 
  its 
  base 
  two-thirds 
  of 
  the 
  width 
  of 
  the 
  apex 
  ; 
  

   arched 
  above 
  ; 
  the 
  cubital 
  nervure 
  in 
  its 
  middle 
  with 
  a 
  

   short 
  branch. 
  Antennae 
  longish, 
  slightly 
  thickened 
  beyond 
  

   the 
  middle 
  ; 
  the 
  first 
  joint 
  of 
  the 
  flagellum 
  distinctly 
  longer 
  

   than 
  the 
  second. 
  Eyes 
  large, 
  parallel, 
  not 
  reaching 
  to 
  the 
  

   base 
  of 
  the 
  mandibles. 
  Mandibles 
  stout, 
  with 
  two 
  large, 
  

   triangular, 
  equal 
  teeth 
  on 
  the 
  apex 
  ; 
  the 
  second 
  joint 
  of 
  

   the 
  maxillary 
  palpi 
  dilated. 
  Parapsidal 
  furrows 
  distinct. 
  

   Median 
  segment 
  large 
  ; 
  its 
  spiracles 
  linear 
  ; 
  there 
  are 
  two 
  

   transverse 
  keels. 
  Petiole 
  narrow, 
  curved, 
  not 
  much 
  

   dilated 
  towards 
  the 
  apex 
  ; 
  its 
  spiracles 
  small, 
  round, 
  

   and 
  placed 
  near 
  the 
  base 
  of 
  the 
  apical 
  third 
  ; 
  the 
  second 
  

   and 
  third 
  segments 
  become 
  gradually 
  dilated 
  towards 
  their 
  

   apices 
  ; 
  the 
  other 
  segments 
  become 
  gradually 
  narrowed. 
  

   Legs 
  longish 
  ; 
  the 
  anterior 
  slightly 
  curved 
  ; 
  the 
  tarsi 
  

   twice 
  the 
  length 
  of 
  the 
  tibiae, 
  incised 
  at 
  the 
  base 
  ; 
  the 
  

   penultimate 
  joint 
  largely 
  projecting 
  at 
  the 
  apex 
  beneath, 
  

   the 
  projection 
  ending 
  in 
  some 
  stout 
  spines 
  ; 
  the 
  hinder 
  

   tarsi 
  spinose, 
  the 
  penultimate 
  joint 
  ending, 
  on 
  each 
  side, 
  

   in 
  a 
  bunch 
  of 
  long 
  stiff 
  spines 
  ; 
  the 
  claws 
  dilated 
  at 
  the 
  

   base 
  ; 
  their 
  apex 
  simple. 
  

  

  The 
  affinities 
  of 
  this 
  genus 
  are 
  clearly 
  with 
  Ospyrn- 
  

   chottis, 
  from 
  which 
  it 
  may 
  be 
  known 
  by 
  the 
  less 
  elon- 
  

   gated 
  face, 
  by 
  the 
  shorter 
  bidentate 
  mandibles, 
  by 
  the 
  

   larger, 
  more 
  quadrate 
  areolet, 
  much 
  longer 
  third 
  discoidal 
  

   cellule, 
  through 
  the 
  cubital 
  nervure 
  originating 
  nearer 
  the 
  

   transverse 
  basal, 
  by 
  the 
  stouter, 
  less 
  elongated 
  petiole 
  ; 
  

  

  