﻿Manchester 
  Memoirs, 
  Vol. 
  xliii. 
  (1899), 
  No. 
  3. 
  193 
  

  

  as 
  the 
  cellule 
  itself 
  ; 
  its 
  outer 
  nervure 
  is 
  largely 
  bullated 
  

   beneath 
  ; 
  the 
  recurrent 
  nervure 
  is 
  joined 
  to 
  it. 
  The 
  

   coxae 
  and 
  trochanters 
  are 
  black 
  ; 
  the 
  anterior 
  pair 
  

   yellowish 
  in 
  front 
  ; 
  the 
  hinder 
  tarsi 
  are 
  spinose 
  beneath. 
  

   Abdomen 
  rufous 
  ; 
  the 
  petiole 
  except 
  at 
  the 
  apex 
  ; 
  and 
  

   an 
  interrupted 
  mark 
  near 
  the 
  base 
  of 
  the 
  second 
  segment, 
  

   black. 
  

  

  Macrogaster. 
  

   I 
  believe 
  I 
  have 
  correctly 
  referred 
  the 
  following 
  

   species 
  to 
  Brulle's 
  genus 
  Macrogaster 
  (Hymen, 
  iv. 
  p. 
  185 
  

   pi. 
  41 
  f. 
  4), 
  the 
  type, 
  and 
  only 
  known 
  species, 
  of 
  which 
  is 
  

   from 
  the 
  Cape 
  of 
  Good 
  Hope. 
  His 
  generic 
  description, 
  

   however, 
  is 
  very 
  defective 
  in 
  some 
  important 
  points 
  ; 
  and 
  

   it 
  is 
  quite 
  possible 
  that 
  our 
  species 
  may 
  not 
  belong 
  really 
  

   to 
  Macrogaster. 
  He 
  places 
  Macrogaster 
  next 
  to 
  Cryptus, 
  

   but 
  the 
  relationship 
  of 
  our 
  species 
  is 
  undoubtedly 
  with 
  

   the 
  Pimplides. 
  In 
  neuration 
  it 
  agrees 
  with 
  Epirhyssa, 
  to 
  

   which 
  the 
  species 
  described 
  by 
  Smith 
  (Proc. 
  Linn. 
  Soc. 
  

   Zool. 
  1857, 
  p. 
  121) 
  is 
  clearly 
  congeneric 
  ; 
  but 
  it 
  differs 
  in 
  

   the 
  mesonotum 
  not 
  being 
  striated, 
  and 
  in 
  other 
  respects. 
  

   The 
  following 
  are 
  the 
  salient 
  generic 
  characters 
  of 
  our 
  

   species.* 
  

  

  Head 
  large, 
  not 
  much 
  dilated 
  behind 
  the 
  eyes, 
  which 
  

   are 
  large, 
  but 
  do 
  not 
  reach 
  to 
  the 
  base 
  of 
  the 
  mandibles. 
  

   Face 
  keeled 
  in 
  the 
  middle 
  ; 
  clypeus 
  rounded 
  or 
  with 
  the 
  

   sides 
  slightly 
  oblique 
  at 
  the 
  apex 
  ; 
  at 
  the 
  base 
  not 
  clearly 
  

   separated 
  from 
  the 
  face. 
  Mandibles 
  with 
  a 
  large 
  lower, 
  

   and 
  a 
  smaller 
  upper, 
  apical 
  tooth. 
  Antennae 
  stout 
  or 
  

   slender, 
  but 
  not 
  so 
  slender 
  as 
  in 
  Pimpla 
  or 
  Rhyssa. 
  

   Thorax 
  stout 
  ; 
  the 
  mesonotum 
  trilobate, 
  the 
  middle 
  lobe 
  

  

  *This 
  genus 
  has 
  the 
  alar 
  neuration 
  of 
  Hemigaster, 
  but 
  in 
  other 
  respects 
  

   is 
  very 
  dissimilar, 
  e.g., 
  that 
  genus 
  has 
  not 
  the 
  mesonotum 
  trilobate 
  ; 
  the 
  

   spiracles 
  are 
  received 
  between 
  the 
  apex 
  and 
  the 
  middle 
  of 
  the 
  petiole 
  ; 
  the 
  

   basal 
  three 
  segments 
  of 
  the 
  abdomen 
  are 
  greatly 
  enlarged, 
  the 
  head 
  is 
  

   smaller, 
  and 
  the 
  petiole 
  bicarinate 
  above. 
  

  

  