﻿the 
  Staphylinidse 
  of 
  Japan. 
  407 
  

  

  Oxyporus 
  niger, 
  n. 
  sp. 
  

  

  Niger, 
  nitidus 
  ; 
  tarsia 
  testaceis 
  ; 
  antennis 
  basin 
  versus 
  et 
  ad 
  latora 
  

  

  nigris 
  ; 
  elytris 
  disco 
  irregulari, 
  fortiter 
  multipunctatis. 
  

   Long. 
  11 
  millirn. 
  

  

  This 
  is 
  allied 
  to 
  0. 
  Mannerkeimi, 
  Gyll., 
  but 
  is 
  of 
  larger 
  

   size 
  and 
  lias 
  a 
  longer 
  thorax 
  and 
  more 
  sculpture 
  on 
  the 
  wing- 
  

   cases 
  ; 
  the 
  antennae 
  too 
  are 
  different 
  in 
  colour, 
  the 
  basal 
  joint, 
  

   being 
  piceous, 
  the 
  next 
  two 
  yellow, 
  the 
  fourth 
  piceous 
  yel- 
  

   low, 
  and 
  the 
  remainder 
  black 
  with 
  the 
  sides 
  of 
  each 
  joint 
  

   yellow. 
  

  

  Oyayama, 
  in 
  Kiushiu, 
  1st 
  June, 
  1881 
  ; 
  three 
  specimens. 
  

  

  Oxyporus 
  triangulum 
  , 
  n. 
  sp. 
  

  

  Niger; 
  elytris 
  oblique 
  testaceo-vittatis 
  ; 
  tibiis 
  ex 
  parte 
  majore 
  tar- 
  

  

  sisque 
  testaceis 
  ; 
  antennis 
  basin 
  versus 
  et 
  ad 
  latera 
  runs. 
  

   Long. 
  11 
  uiillirn. 
  

  

  Allied 
  to 
  the 
  European 
  O. 
  maxillosus^ 
  though 
  different 
  in 
  

   colour, 
  and 
  in 
  this 
  respect 
  more 
  similar 
  to 
  the 
  North-American 
  

   O. 
  femoraliSj 
  Or. 
  There 
  is 
  on 
  the 
  elytra 
  a 
  large 
  triangular 
  

   patch 
  of 
  black 
  colour 
  extending 
  along 
  the 
  suture 
  from 
  the 
  base 
  

   to 
  the 
  apex, 
  another 
  large 
  black 
  mark 
  at 
  each 
  outer 
  angle, 
  these 
  

   latter 
  two 
  marks 
  extending 
  inwards 
  and 
  meeting 
  at 
  the 
  suture, 
  

   and 
  each 
  on 
  the 
  outside 
  reaching 
  to 
  the 
  shoulder 
  ; 
  thus 
  the 
  

   yellow 
  colour 
  is 
  limited 
  to 
  two 
  quite 
  separated 
  oblique 
  stripes, 
  

   a 
  character 
  which 
  distinguishes 
  it 
  from 
  its 
  Japanese 
  and 
  Euro- 
  

   pean 
  congeners. 
  

  

  From 
  the 
  examples 
  before 
  me 
  it 
  appears 
  that 
  this 
  insect 
  is 
  

   frequently 
  found 
  in 
  an 
  immature 
  state, 
  and 
  then 
  the 
  charac- 
  

   teristic 
  coloration 
  is 
  not 
  so 
  conspicuous. 
  The 
  colour 
  of 
  the 
  

   legs 
  appears 
  to 
  be 
  variable 
  ; 
  in 
  the 
  most 
  developed 
  examples 
  

   the 
  femora 
  are 
  quite 
  black 
  and 
  the 
  tibiae 
  pallid 
  yellow, 
  except 
  

   a 
  small 
  part 
  of 
  their 
  length 
  at 
  the 
  base 
  and 
  apex 
  ; 
  but 
  the 
  

   tibiae 
  may 
  become 
  suffused 
  with 
  black, 
  while, 
  on 
  the 
  other 
  

   hand, 
  the 
  femora 
  are 
  sometimes 
  more 
  dilute 
  in 
  colour, 
  so 
  as 
  

   to 
  be 
  nearly 
  or 
  quite 
  yellow. 
  

  

  Found 
  on 
  Oyama, 
  Oyayama, 
  and 
  at 
  the 
  base 
  of 
  Fujisan. 
  

  

  Oxyporus 
  japonicus, 
  n. 
  sp. 
  

  

  Niger: 
  elytris 
  pedibusque 
  flavis, 
  illis 
  sutura 
  maculaque 
  ad 
  angulurn 
  

   externum 
  nigris 
  ; 
  antennis 
  piceis, 
  articulis 
  5°-10 
  m 
  marginibus 
  

   testaceis. 
  

  

  Long. 
  10-12 
  millim. 
  

  

  This 
  is 
  closely 
  allied 
  to 
  0. 
  maxillosus 
  , 
  but 
  does 
  not 
  agree 
  

  

  28* 
  

  

  