﻿Manchester 
  Memoirs, 
  Vol. 
  xli. 
  (1897), 
  No. 
  4. 
  19 
  

  

  ROTHNEYIA, 
  gen. 
  nov. 
  

  

  Differs 
  from 
  all 
  known 
  Ichneumonidae 
  by 
  having 
  only 
  

   three 
  visible 
  abdominal 
  segments, 
  the 
  third 
  ending 
  at 
  the 
  

   apex 
  in 
  a 
  semicircle 
  which 
  forms 
  at 
  each 
  side 
  a 
  stout 
  

   tooth 
  ; 
  the 
  scutellum 
  projects 
  at 
  each 
  side 
  in 
  a 
  stout 
  

   triangular 
  tooth 
  ; 
  there 
  are 
  two 
  large 
  spines 
  on 
  the 
  centre 
  

   of 
  the 
  median 
  segment 
  at 
  the 
  side. 
  Antennae 
  25-jointed. 
  

   Legs 
  and 
  wings 
  as 
  in 
  Ichneumon. 
  

  

  This 
  genus 
  does 
  not 
  fit 
  well 
  into 
  any 
  of 
  the 
  subtribes 
  

   of 
  Ichncumonidcs. 
  The 
  alar 
  neuration 
  is 
  quite 
  as 
  in 
  

   Ichneumon 
  ; 
  but 
  otherwise 
  the 
  genus 
  differs 
  completely 
  ; 
  

   and, 
  as 
  regards 
  the 
  abdomen, 
  it 
  can 
  only 
  be 
  compared 
  

   with 
  some 
  Braconidae 
  such 
  as 
  Chelonus. 
  The 
  form 
  of 
  the 
  

   spiracles 
  I 
  cannot 
  determine 
  from 
  the 
  roughness 
  of 
  the 
  

   median 
  segment. 
  

  

  RoTHNEYiA 
  Wroughtoni, 
  sp. 
  nov. 
  (PI. 
  3, 
  f. 
  3). 
  

  

  Nigra, 
  petiolo 
  ferrugineo 
  ; 
  pedibus 
  rujis 
  ; 
  genicnlis, 
  tihiis 
  

   tarsisqne 
  posticis, 
  nigris 
  ; 
  alis 
  hyalinis, 
  basi 
  antennarnm 
  late 
  

   rufis. 
  2. 
  Long. 
  5 
  mm. 
  

  

  Hab. 
  Mussouri 
  (Rothney). 
  

  

  Antennae 
  black 
  ; 
  the 
  5 
  — 
  6 
  basal 
  joints 
  of 
  the 
  flagellum 
  

   brownish 
  ; 
  closely 
  covered 
  with 
  a 
  microscopic 
  down, 
  the 
  

   scape 
  with 
  white 
  hair. 
  Head 
  black 
  ; 
  below 
  the 
  antennae 
  

   thickly 
  covered 
  with 
  long 
  white 
  hair 
  ; 
  the 
  front 
  and 
  

   vertex 
  punctured, 
  more 
  sparsely 
  covered 
  with 
  fuscous 
  hair. 
  

   Mandibles 
  depressed 
  at 
  the 
  base 
  ; 
  piceous 
  in 
  the 
  middle 
  ; 
  

   the 
  palpi 
  white. 
  Thorax 
  black 
  ; 
  the 
  mesonotum 
  more 
  

   strongly 
  in 
  the 
  centre, 
  which 
  is 
  broadly 
  raised 
  ; 
  the 
  

   scutellum 
  rugosely 
  punctured 
  ; 
  the 
  sides 
  raised 
  ; 
  the 
  apex 
  

   between 
  the 
  teeth 
  depressed 
  ; 
  the 
  apex 
  of 
  the 
  teeth 
  

   rufous. 
  The 
  middle 
  of 
  the 
  metanotum 
  between 
  the 
  teeth 
  

   stoutly 
  bordered 
  or 
  margined 
  all 
  round 
  ; 
  the 
  top 
  longi- 
  

   tudinally, 
  the 
  apex 
  irregularly 
  transversely 
  striolated 
  ; 
  

   with 
  a 
  semicircular 
  keel 
  at 
  the 
  extreme 
  apex. 
  Pleurae 
  

  

  