﻿the 
  Staphylinidae 
  of 
  Japan. 
  43 
  

  

  Thorax 
  a 
  little 
  narrowed 
  towards 
  the 
  front, 
  with 
  very 
  nume- 
  

   rous 
  coarse 
  punctures, 
  leaving 
  an 
  irregular 
  space 
  along 
  the 
  

   middle 
  smooth. 
  Elytra 
  and 
  hind 
  body 
  closely 
  and 
  rather 
  

   finely 
  punctate. 
  

  

  Allied 
  to 
  P. 
  gast 
  rails, 
  but 
  with 
  numerous 
  differences 
  in 
  

   colour, 
  punctuation, 
  and 
  size 
  ; 
  the 
  female 
  has 
  the 
  front 
  tarsi 
  

   distinctly 
  dilated, 
  the 
  male 
  I 
  do 
  not 
  know. 
  

  

  Two 
  examples 
  found 
  at 
  Otaru 
  and 
  one 
  at 
  Hakodate. 
  

  

  Hesperus. 
  

  

  To 
  this 
  genus, 
  recently 
  established 
  by 
  Fauvel, 
  I 
  have 
  to 
  

   add 
  an 
  elegant 
  Japanese 
  species, 
  as 
  well 
  as 
  Philonihus 
  tiro, 
  

   previously 
  described 
  by 
  me 
  ; 
  this 
  latter 
  is 
  rather 
  aberrant, 
  

   the 
  form 
  being 
  elongate 
  and 
  Philonthus-like 
  and 
  the 
  middle 
  

   coxa? 
  less 
  widely 
  separated. 
  

  

  Hesperus 
  ornatus, 
  n. 
  sp. 
  

  

  Niger 
  ; 
  antennarum 
  apice 
  tibiisque 
  rufis 
  ; 
  abdomine 
  apicem 
  versus 
  

   rufescente 
  ; 
  elytris 
  rufis, 
  ante 
  apicem 
  nigris, 
  apice 
  ipso 
  albido- 
  

   marginato. 
  

  

  Long, 
  f 
  1 
  millim. 
  

  

  Antenna? 
  only 
  moderately 
  long, 
  black, 
  with 
  the 
  three 
  ter- 
  

   minal 
  joints 
  white 
  ; 
  palpi 
  elongate, 
  piceous. 
  Head 
  shining 
  

   black, 
  coarsely 
  punctate 
  at 
  the 
  sides, 
  a 
  broad 
  space 
  on 
  the 
  

   middle 
  smooth. 
  Thorax 
  oblong, 
  shining 
  black, 
  coarsely 
  

   punctate, 
  with 
  a 
  straight, 
  rather 
  narrow 
  space 
  along 
  the 
  

   middle 
  smooth. 
  Elytra 
  closely 
  and 
  not 
  quite 
  finely 
  punctate, 
  

   somewhat 
  shining. 
  Hind 
  body 
  rather 
  sparingly 
  punctate, 
  

   black, 
  with 
  slight 
  particoloured 
  reflexions, 
  the 
  two 
  terminal 
  

   segments 
  red. 
  Legs 
  slender, 
  coxa? 
  and 
  femora 
  piceous 
  or 
  

   nearly 
  black, 
  tibiee 
  white, 
  fuscescent 
  at 
  their 
  extremity, 
  tarsi 
  

   yellowish. 
  The 
  male 
  has 
  a 
  well-marked 
  notch 
  on 
  the 
  last 
  

   ventral 
  plate, 
  and 
  its 
  front 
  tarsi 
  are 
  a 
  little 
  dilated 
  ; 
  in 
  the 
  

   female 
  these 
  feet 
  are 
  only 
  very 
  slightly 
  dilated. 
  

  

  Rare, 
  Hitoyoshi, 
  Yuyama, 
  and 
  Nikko, 
  in 
  the 
  month 
  of 
  

   May, 
  under 
  dead 
  leaves 
  with 
  fungal 
  growth. 
  

  

  Actobius 
  tnornatus, 
  n. 
  sp. 
  

  

  Angustulus, 
  elongatus, 
  subdepressus, 
  niger 
  ; 
  antennis 
  fuscis, 
  basi 
  

  

  pedibusque 
  testaceis. 
  

   Long. 
  5 
  millim. 
  

  

  Antenna? 
  rather 
  slender, 
  but 
  little 
  thickened 
  externally, 
  

  

  