﻿the 
  Staphylinidae 
  of 
  Japan. 
  265 
  

  

  Medon 
  confertus, 
  n. 
  sp. 
  

  

  Fusco-rufus 
  ; 
  capita, 
  thorace 
  elytrisque 
  nigricantibus 
  ; 
  abdoruitie 
  

   ante 
  apicem 
  nigro-variegato 
  ; 
  antennis 
  rufis, 
  pedibus 
  flavis 
  ; 
  opacus, 
  

   capite 
  thoraccque 
  densissirae 
  subtiliter 
  subrugose 
  punctatis, 
  hoc 
  

   medio 
  angustissinie 
  carinulato. 
  

  

  Long. 
  5 
  milliin. 
  

  

  Rather 
  narrow. 
  Antennas 
  red, 
  the 
  middle 
  joints 
  slightly 
  

   darker, 
  penultimate 
  joint 
  not 
  quite 
  so 
  long 
  as 
  broad. 
  Head 
  

   quadrate, 
  excessively 
  densely 
  punctured, 
  so 
  as 
  to 
  be 
  dull, 
  the 
  

   punctuation 
  only 
  moderately 
  tine. 
  Thorax 
  subquadrate, 
  but 
  

   little 
  broader 
  than 
  long, 
  its 
  punctuation 
  even 
  denser 
  and 
  finer 
  

   than 
  that 
  of 
  the 
  head, 
  with 
  a 
  very 
  tine 
  smooth 
  line 
  along 
  the 
  

   middle. 
  Elytra 
  rather 
  long, 
  a 
  good 
  deal 
  longer 
  than 
  the 
  

   thorax, 
  densely 
  and 
  finely 
  punctate, 
  slightly 
  shining. 
  Hind 
  

   body 
  red 
  at 
  the 
  base, 
  the 
  apical 
  segments 
  black, 
  but 
  the 
  black 
  

   colour 
  is 
  interrupted 
  by 
  the 
  hind 
  margin 
  of 
  the 
  penultimate 
  

   and 
  the 
  base 
  of 
  the 
  terminal 
  segments 
  being 
  red. 
  

  

  I 
  can 
  see 
  no 
  character 
  foreign 
  to 
  Medon 
  in 
  this 
  species 
  

   except 
  that 
  the 
  anterior 
  tarsi 
  are 
  a 
  little 
  more 
  dilated 
  than 
  is 
  

   usual. 
  

  

  Yuyama 
  and 
  Hitoyoshi, 
  May 
  1881 
  ; 
  five 
  examples. 
  

  

  Medon 
  spadiceus, 
  n. 
  sp. 
  

  

  Depressus, 
  latiuscnlus, 
  fuscus 
  ; 
  capite 
  nigro 
  ; 
  elytris 
  sordide 
  testa- 
  

   ceis 
  ; 
  antennis 
  rufis, 
  pedibus 
  testaceis 
  ; 
  capite 
  thoraceque 
  fortiter 
  

   punctatis, 
  hoc 
  medio 
  profunde 
  canaliculato. 
  

  

  Long. 
  5 
  millim. 
  

  

  Antennae 
  red, 
  rather 
  stout, 
  slightly 
  thicker 
  externally, 
  

   penultimate 
  joints 
  very 
  distinctly 
  transverse. 
  Head 
  broad, 
  

   subquadrate, 
  slightly 
  narrowed 
  in 
  front, 
  densely 
  and 
  very 
  

   coarsely 
  punctate, 
  with 
  a 
  smooth 
  line 
  along 
  the 
  middle 
  in 
  

   front. 
  Thorax 
  transverse, 
  a 
  little 
  narrowed 
  behind, 
  coarsely 
  

   and 
  closely 
  punctate, 
  obscure 
  black 
  in 
  the 
  middle, 
  obscure 
  red 
  

   at 
  the 
  sides, 
  with 
  a 
  very 
  distinct 
  channel 
  along 
  the 
  middle. 
  

   Elytra 
  a 
  little 
  longer 
  than 
  the 
  thorax, 
  shining, 
  somewhat 
  

   sparingly 
  punctate, 
  the 
  extremity 
  yellow, 
  the 
  base 
  inf 
  uscate 
  

   yellow. 
  

  

  This 
  is 
  apparently 
  a 
  very 
  distinct 
  species 
  and 
  will 
  readily 
  

   be 
  recognized 
  by 
  the 
  deep 
  channel 
  on 
  the 
  thorax. 
  It 
  is 
  suffi- 
  

   ciently 
  distinct 
  from 
  Medon 
  to 
  be 
  generically 
  separated, 
  the 
  

   basal 
  tooth 
  on 
  the 
  right 
  mandible 
  being 
  only 
  obscurely 
  

   divided 
  and 
  the 
  hind 
  tarsus 
  short, 
  with 
  the 
  four 
  basal 
  joints 
  

   subequal 
  in 
  length. 
  

  

  Unique. 
  Chiuzenji, 
  19th 
  August, 
  1881. 
  

  

  