﻿the 
  Staphylinidaj 
  of 
  Japan. 
  115 
  

  

  structure 
  ; 
  it 
  is 
  of 
  large 
  size, 
  not 
  much 
  infolded, 
  and 
  its 
  lower 
  

   marginal 
  line 
  does 
  not 
  join 
  the 
  upper 
  line, 
  but 
  is 
  continued 
  

   forward 
  till 
  near 
  the 
  front 
  of 
  the 
  presternum 
  — 
  quite 
  as 
  far 
  as 
  

   the 
  front 
  of 
  the 
  coxal 
  excision 
  — 
  where 
  it 
  ceases 
  ; 
  the 
  long 
  

   tactile 
  seta 
  is 
  remote 
  from 
  the 
  upper 
  line. 
  The 
  front 
  tarsi 
  

   are 
  dilated 
  in 
  both 
  sexes, 
  strongly 
  in 
  the 
  male, 
  slightly 
  in 
  the 
  

   female 
  ; 
  the 
  hind 
  feet 
  are 
  very 
  slender 
  and 
  elongate 
  and 
  the 
  

   basal 
  and 
  apical 
  joints 
  subequal 
  in 
  length. 
  

  

  Amichrotus 
  apicipennis 
  } 
  n. 
  sp. 
  

  

  Subdepressus, 
  niger 
  ; 
  antennarum 
  artieulis 
  ultimis 
  albidis 
  ; 
  elytris 
  

   ad 
  apicem 
  flavo-marginatis 
  ; 
  abdominis 
  apice 
  rufo, 
  tarsis 
  rufescen- 
  

   tibus 
  ; 
  eapite, 
  thorace 
  elytrisque 
  dense 
  punctatis, 
  opacis, 
  abdomine 
  

   parcius 
  punctate-, 
  sat 
  nitido. 
  

  

  Long. 
  1U 
  miliim. 
  

  

  Antennae 
  rather 
  slender, 
  black, 
  with 
  the 
  three 
  or 
  four 
  ter- 
  

   minal 
  joints 
  white. 
  Head 
  suborbiculate, 
  very 
  densely 
  punc- 
  

   tate. 
  Thorax 
  punctate 
  like 
  the 
  head, 
  with 
  a 
  very 
  narrow, 
  indis- 
  

   tinct, 
  smooth 
  line 
  along 
  the 
  middle. 
  Elytra 
  closely 
  and 
  rather 
  

   finely 
  punctate, 
  the 
  hind 
  margin 
  very 
  pale 
  yellow, 
  and 
  this 
  

   part 
  clothed 
  with 
  concolorous 
  pubescence. 
  Hind 
  body 
  rather 
  

   shining, 
  somewhat 
  sparingly 
  punctate, 
  the 
  three 
  basal 
  seg- 
  

   ments 
  each 
  with 
  a 
  broad, 
  very 
  deep, 
  arcuate 
  impression 
  near 
  

   the 
  base 
  ; 
  the 
  two 
  terminal 
  segments 
  red. 
  Tibiee 
  very 
  

   slender, 
  with 
  only 
  a 
  few 
  distant 
  inconspicuous 
  spinules. 
  The 
  

   male 
  has 
  a 
  slight 
  broad 
  emargination 
  of 
  the 
  apical 
  ventral 
  

   plate, 
  and 
  the 
  penultimate 
  segment 
  is 
  furnished 
  in 
  the 
  middle 
  

   with 
  a 
  patch 
  of 
  dense, 
  elongate, 
  depressed 
  golden 
  pubescence. 
  

  

  This 
  remarkable 
  insect 
  frequents 
  fungi 
  on 
  old 
  standing- 
  

   timber, 
  where 
  it 
  is 
  met 
  with 
  walking 
  about 
  in 
  a 
  threatening- 
  

   attitude, 
  and 
  is 
  associated 
  with 
  an 
  earwig 
  {Chelisoches 
  Leioisi, 
  

   Bormans) 
  which 
  behaves 
  in 
  the 
  same 
  way. 
  It 
  was 
  met 
  with 
  

   sparingly 
  at 
  various 
  dates 
  and 
  in 
  several 
  localities, 
  from 
  

   Miyanoshita 
  to 
  Junsai. 
  

  

  Hadeopinus, 
  nov. 
  gen. 
  

  

  Corpus 
  crassum, 
  apterum 
  ; 
  elytris 
  metasternoque 
  brevissimis, 
  illis 
  

   sutura 
  integra 
  ; 
  tibiis 
  anterioribus 
  dilatatis. 
  

  

  This 
  insect 
  is 
  to 
  be 
  placed 
  with 
  Thinopinus 
  and 
  Hadrotes, 
  

   between 
  which 
  it 
  is 
  intermediate, 
  and, 
  as 
  in 
  them, 
  the 
  

   lateral 
  lines 
  of 
  the 
  thorax 
  are 
  not 
  joined 
  till 
  the 
  anterior 
  

   angles 
  are 
  reached. 
  The 
  ligula 
  is 
  rather 
  broad, 
  but 
  its 
  lobes 
  

   are 
  not 
  divided 
  in 
  the 
  middle. 
  The 
  front 
  tarsi 
  are 
  very 
  broad 
  

  

  