﻿Mr. 
  YV. 
  L. 
  Distant 
  on 
  Neotropical 
  Pentatomidge. 
  253 
  

  

  antenna? 
  black, 
  first 
  joint 
  not 
  reaching 
  head, 
  second 
  joint 
  a 
  

   little 
  longer, 
  third, 
  fourth, 
  and 
  fifth 
  almost 
  subequal 
  in 
  

   length 
  ; 
  pronotura 
  coarsely 
  punctate, 
  the 
  lateral 
  margins 
  

   and 
  a 
  central 
  line 
  traversing 
  the 
  central 
  spot 
  levigate, 
  the 
  

   anterior 
  margin 
  with 
  some 
  scattered 
  very 
  coarse 
  punctures, 
  

   the 
  lateral 
  angles 
  subprominent 
  and 
  levigate; 
  scutellum 
  

   somewhat 
  thickly 
  punctate, 
  the 
  oblique 
  basal 
  spots 
  almost 
  

   impunctate; 
  coriurn 
  thickly 
  finely 
  punctate; 
  membrane 
  

   cupreous, 
  passing 
  abdominal 
  apex 
  ; 
  abdominal 
  basal 
  spine 
  

   slightly 
  passing 
  the 
  posterior 
  coxa?. 
  

  

  Long. 
  9| 
  mm. 
  ; 
  exp. 
  pronot. 
  angl. 
  5 
  mm. 
  

  

  Hab. 
  Argentina; 
  Tucuman 
  Prov. 
  (Brit. 
  Mus.). 
  

  

  Oplomus 
  equestris, 
  sp. 
  n. 
  

  

  Pronotum, 
  scutellum, 
  and 
  corium 
  sanguineous 
  ; 
  head, 
  

   narrow 
  lateral 
  margins, 
  and 
  two 
  large 
  irregularly 
  sub- 
  

   triangular 
  spots 
  to 
  pronotum 
  (widest 
  at 
  base), 
  a 
  broad 
  central 
  

   transverse 
  fascia 
  to 
  scutellum, 
  a 
  large 
  spot 
  a 
  little 
  behind 
  

   middle 
  of 
  corium, 
  and 
  basal 
  area 
  of 
  membrane 
  black 
  ; 
  

   sternum 
  and 
  legs 
  dark 
  indigo-blue; 
  abdomen 
  beneath 
  pale 
  

   ochraceous, 
  with 
  transverse 
  marginal 
  spots, 
  a 
  large 
  subapical 
  

   spot, 
  and 
  the 
  anal 
  segment 
  dark 
  indigo-blue; 
  antenna? 
  

   black, 
  first 
  joint 
  not 
  quite 
  reaching 
  apex 
  of 
  head, 
  second 
  and 
  

   third 
  almost 
  subequal 
  in 
  length 
  ; 
  head 
  punctate, 
  the 
  lateral 
  

   areas 
  transversely 
  striate, 
  outer 
  apical 
  angles 
  of 
  the 
  lateral 
  

   lobes 
  rounded 
  ; 
  pronotum 
  somewhat 
  sparsely 
  and 
  coarsely 
  

   punctate 
  ; 
  scutellum 
  with 
  the 
  basal 
  area 
  coarsely 
  sparsely 
  

   punctate, 
  remaining 
  area 
  more 
  thickly 
  and 
  finely 
  punctate; 
  

   in 
  the 
  middle 
  a 
  broad 
  central 
  longitudinal 
  carination 
  ; 
  

   corium 
  thickly 
  finely 
  punctate; 
  sternum 
  more 
  or 
  less 
  coarsely 
  

   punctate 
  ; 
  rostrum 
  dark 
  indigo-blue 
  and 
  reaching 
  the 
  

   posterior 
  coxa?. 
  

  

  Var. 
  — 
  Abdomen 
  beneath 
  sanguineous, 
  not 
  pale 
  ochra- 
  

   ceous 
  ; 
  corium 
  without 
  the 
  dark 
  spot. 
  

  

  Long. 
  13 
  ram. 
  ; 
  exp. 
  pronot. 
  angl. 
  7 
  mm. 
  

  

  Hab. 
  Centr. 
  Brazil 
  ; 
  Chapada 
  {A. 
  Robert, 
  Brit. 
  Mus.). 
  

  

  The 
  variety 
  described 
  is 
  in 
  my 
  own. 
  collection, 
  but 
  

   unlocalized. 
  

  

  Allied 
  to 
  0. 
  marginalis, 
  Westw. 
  

  

  Parajalla, 
  gen. 
  nov. 
  

  

  Jalla, 
  sect, 
  aa 
  (part.), 
  Stal, 
  En. 
  Hem. 
  i. 
  p. 
  34 
  (1870). 
  

  

  Allied 
  to 
  Jalla, 
  but 
  differing 
  in 
  the 
  following 
  particulars 
  : 
  — 
  

   Tronotum 
  with 
  the 
  lateral 
  margins 
  moderately 
  but 
  dis- 
  

  

  