﻿4 
  Mr. 
  Cameron 
  on 
  

  

  .^^NyssoN 
  RUGOSUS 
  (PI. 
  IX., 
  Fig. 
  13 
  head, 
  13^ 
  antenna) 
  

   Niger, 
  linea 
  proioti, 
  linea 
  abdovimis 
  segjiietitibus 
  i 
  — 
  2, 
  

   maciilaqiie 
  scutelli^flavis, 
  abdoniuis 
  basi 
  feinoribusqiie 
  posticis 
  

   rufis 
  ; 
  alls 
  fuscis. 
  Long. 
  5 
  — 
  7 
  mm. 
  

  

  Antennae 
  stout, 
  covered 
  with 
  a 
  white 
  microscopic 
  pile 
  ; 
  

   the 
  third 
  joint 
  not 
  much 
  longer 
  than 
  the 
  fourth 
  ; 
  the 
  last 
  

   conical 
  at 
  apex, 
  longer 
  than 
  the 
  preceding. 
  Head 
  strongly 
  

   punctured 
  ; 
  densely 
  covered 
  with 
  silvery, 
  inclining 
  to 
  golden 
  

   on 
  the 
  vertex, 
  pubescence. 
  Cheeks 
  margined 
  ; 
  an 
  elongated 
  

   wedge-shaped 
  projection 
  on 
  the 
  front, 
  immediately 
  above 
  

   the 
  antennas 
  ; 
  eyes 
  slightly 
  sinuated 
  above 
  ; 
  apex 
  of 
  clypeus 
  

   bi-dentate 
  in 
  the 
  middle. 
  Mandibules 
  yellow 
  at 
  base, 
  rufous 
  

   at 
  the 
  apex. 
  Thorax 
  rugosely 
  punctured, 
  covered 
  with 
  a 
  

   whitish 
  pubescence 
  ; 
  pronotum 
  slightly 
  raised 
  in 
  the 
  

   middle 
  above, 
  the 
  centre 
  shining, 
  impunctate, 
  glabrous 
  ; 
  

   the 
  sides, 
  looked 
  at 
  from 
  above, 
  curved. 
  Scutellum 
  

   much 
  more 
  strongly 
  rugose 
  than 
  the 
  mesonotum 
  ; 
  meta- 
  

   notum 
  not 
  very 
  clearly 
  defined 
  from 
  it, 
  rounded 
  and 
  

   narrowed 
  behind 
  ; 
  median 
  segment 
  aciculate, 
  shining, 
  

   bearing 
  four 
  keels 
  ; 
  the 
  lateral 
  angles 
  acute, 
  the 
  spine 
  

   stout, 
  longer 
  than 
  broad. 
  Mesopleurae 
  convex, 
  densely 
  

   pilose, 
  strongly 
  punctured, 
  clearly 
  projecting 
  beyond 
  the 
  

   metapleurae. 
  Abdomen 
  sparsely 
  covered 
  with 
  shallow 
  

   distinctly 
  separated 
  punctures, 
  the 
  apical 
  two 
  segments 
  

   more 
  strongly 
  than 
  the 
  others 
  ; 
  pygidial 
  area 
  longitudinally 
  

   rugosely 
  punctured. 
  Ventral 
  segments 
  punctured 
  like 
  the 
  

   dorsal 
  ; 
  the 
  basal 
  margined 
  laterally 
  ; 
  broadly 
  projecting 
  in 
  

   the 
  middle 
  ; 
  the 
  centre 
  of 
  the 
  projection 
  stoutly 
  bicarinate, 
  

   and 
  its 
  sides 
  are 
  also 
  keeled. 
  Hypopygium 
  aciculate 
  at 
  

   base 
  and 
  in 
  the 
  centre 
  ; 
  the 
  rest 
  punctured, 
  the 
  apex 
  bluntly 
  

   bi-denticulate. 
  The 
  basal 
  abdominal 
  segment 
  is 
  entirely 
  

   red, 
  except 
  a 
  yellow 
  line 
  at 
  the 
  apex 
  ; 
  the 
  apex 
  of 
  the 
  

   second 
  segment 
  is 
  yellow 
  ; 
  the 
  third 
  at 
  the 
  base 
  is 
  more 
  or 
  

   less 
  red 
  ; 
  the 
  basal 
  two 
  ventral 
  segments 
  are 
  red. 
  Legs 
  

   (especially 
  the 
  tibiae 
  and 
  tarsi) 
  densely 
  covered 
  with 
  whitish 
  

  

  