﻿new 
  Species 
  of 
  Dlploptera, 
  101 
  

  

  Polistes, 
  Latr. 
  

   Polistes 
  tristis, 
  sp. 
  n. 
  

  

  Niger, 
  fusco-ferrugineo 
  variegatus, 
  abdomine 
  nigro 
  ; 
  alia 
  leviter 
  

   iufuscatis, 
  cellula 
  radiali 
  fusca. 
  

  

  $ 
  . 
  Black 
  ; 
  scape 
  entirely 
  and 
  flagellum 
  partially 
  beneath 
  

   fusco-ferruginous 
  ; 
  mandibles, 
  clypeus, 
  cheeks, 
  space 
  behind 
  

   the 
  eyes, 
  pronotuni, 
  scutellum, 
  postscutellum, 
  two 
  longitu- 
  

   dinal 
  lines 
  on 
  median 
  segment, 
  the 
  legs 
  (with 
  the 
  exception 
  

   of 
  the 
  coxEe 
  and 
  femora 
  above) 
  fusco-ferruginous. 
  Two 
  

   small 
  marks 
  at 
  extreme 
  apex 
  of 
  median 
  segment 
  and 
  on 
  apex 
  

   of 
  first 
  abdominal 
  tergite 
  laterally 
  pale 
  yellow. 
  Wings 
  

   fusco-hyaline, 
  distinctly 
  golden 
  along 
  the 
  costal 
  area, 
  radial 
  

   cell 
  fuscous. 
  Clypeus 
  pentagonal, 
  gradually 
  widening 
  from 
  

   base, 
  widest 
  part 
  at 
  base 
  of 
  mandibles, 
  produced 
  to 
  a 
  point 
  

   at 
  apex. 
  Abdomen 
  normal. 
  Clypeus 
  and 
  thorax 
  finely 
  

   punctured, 
  median 
  segment 
  coarsely 
  transversely 
  striate. 
  

   The 
  whole 
  insect 
  covered 
  with 
  a 
  short 
  thick 
  silver 
  pubescence. 
  

  

  Length 
  14 
  mm. 
  

  

  3 
  ?. 
  

  

  Hab. 
  Mombasa, 
  E. 
  Africa 
  {A. 
  J. 
  Cholmeley). 
  

  

  Quite 
  distinct 
  from 
  any 
  known 
  species 
  in 
  the 
  almost 
  

   totally 
  black 
  abdomen. 
  Possibly 
  the 
  two 
  yellow 
  marks 
  on 
  

   the 
  first 
  abdominal 
  tergite 
  may 
  be 
  the 
  remains 
  of 
  a 
  yellow 
  

   fascia 
  ; 
  in 
  one 
  specimen 
  there 
  is 
  no 
  trace 
  whatever 
  of 
  the 
  

   yellow 
  marks. 
  

  

  Polistes 
  variabilis 
  regina, 
  var. 
  nov. 
  

  

  Ferrugineus, 
  flavo 
  variegatus 
  ; 
  pedibus 
  unicoloribus. 
  

  

  $ 
  . 
  Pale 
  ferruginous 
  ; 
  pronotum 
  along 
  the 
  front 
  and 
  hind 
  

   margin, 
  narrow 
  transverse 
  lines 
  on 
  the 
  base 
  of 
  scutellum 
  and 
  

   postscutellum, 
  a 
  small 
  ovoid 
  spot 
  on 
  mesopleurse, 
  and 
  two 
  

   broad 
  longitudinal 
  marks 
  on 
  the 
  posterior 
  face 
  of 
  the 
  median 
  

   segment 
  pale 
  testaceous. 
  First 
  abdominal 
  segment 
  (except 
  

   for 
  small 
  ferruginous 
  mark 
  on 
  tergite) 
  pale 
  yellow 
  ; 
  abdo- 
  

   miual 
  segment 
  2 
  with 
  narrow 
  transverse 
  apical 
  band, 
  abdo- 
  

   minal 
  segments 
  3, 
  4, 
  5 
  with 
  broad 
  transverse 
  apical 
  bands 
  

   pale 
  yellow. 
  Legs 
  entirely 
  pale 
  ferruginous. 
  The 
  whole 
  

   insect 
  densely 
  covered 
  with 
  a 
  short 
  golden 
  pubescence. 
  

   "Wings 
  fusco-hyaline, 
  slightly 
  golden 
  along 
  the 
  costa. 
  

   Length 
  11 
  mm. 
  

  

  7 
  ?. 
  

  

  Hab. 
  Cooktown, 
  N. 
  Queensland 
  (D. 
  Le 
  Souef), 
  

  

  