﻿the 
  Staphylinidaj 
  of 
  Japan. 
  333 
  

  

  Stenus 
  mercator, 
  n. 
  sp. 
  (Sect. 
  II. 
  B, 
  Erichson.) 
  

  

  Elongatus, 
  niger, 
  vix 
  subviridescens, 
  pube 
  albida, 
  micante, 
  depressa 
  

   vestitus 
  ; 
  antennis, 
  palpis 
  pedibusque 
  pallide 
  flavis, 
  femoribus 
  

   posterioribus 
  apice 
  nigro. 
  

  

  Long. 
  6 
  milliro. 
  

  

  Head 
  not 
  excavate, 
  but 
  broadly 
  and 
  rather 
  deeply 
  im- 
  

   pressed 
  on 
  each 
  side. 
  Thorax 
  elongate, 
  subcylindric, 
  though 
  

   slightly 
  curved 
  at 
  the 
  sides, 
  closely, 
  moderately 
  finely 
  punc- 
  

   tured. 
  Elytra 
  elongate, 
  longer 
  than 
  the 
  thorax, 
  densely 
  

   punctured. 
  Hind 
  body 
  elongate, 
  rather 
  closely 
  but 
  indis- 
  

   tinctly 
  punctured. 
  The 
  male 
  has 
  a 
  rather 
  large 
  deep 
  notch 
  

   on 
  the 
  hind 
  margin 
  of 
  the 
  last 
  ventral 
  plate. 
  

  

  Junsai, 
  Niigata. 
  

  

  This 
  is 
  similar 
  to 
  our 
  European 
  S. 
  solutus, 
  though 
  with 
  

   numerous 
  points 
  of 
  distinction. 
  Mr. 
  Lewis 
  some 
  years 
  ago 
  

   found 
  at 
  Kiu 
  Kiang 
  a 
  specimen 
  that 
  may 
  be 
  a 
  variety 
  of 
  

   this 
  species. 
  

  

  Stenus 
  sedatus, 
  n. 
  sp. 
  (Sect. 
  II. 
  B, 
  Erichson.) 
  

  

  Elongatus, 
  angustulus, 
  niger, 
  pube 
  albida 
  evidenter 
  vestitus 
  ; 
  anten- 
  

   nis, 
  palpis 
  pedibusque 
  pallide 
  flavis 
  ; 
  dense 
  fortiter 
  punctatus, 
  sat 
  

   nitidus. 
  

  

  Long. 
  6 
  millim. 
  

  

  Head 
  broad, 
  not 
  excavate, 
  but 
  rather 
  deeply 
  depressed 
  on 
  

   each 
  side, 
  the 
  interstice 
  broad, 
  not 
  punctate 
  on 
  the 
  middle 
  ; 
  

   eyes 
  large, 
  widely 
  separated. 
  Thorax 
  elongate, 
  slightly 
  

   rounded 
  on 
  the 
  sides, 
  very 
  coarsely 
  punctate. 
  Elytra 
  about 
  

   as 
  long 
  as 
  the 
  thorax, 
  closely 
  and 
  coarsely 
  punctate. 
  Hind 
  

   body 
  rather 
  coarsely 
  punctate, 
  even 
  at 
  the 
  extremity. 
  

  

  Niigata, 
  6th 
  September, 
  1881 
  ; 
  one 
  female. 
  

  

  This 
  may 
  be 
  placed 
  between 
  S. 
  cicindela 
  and 
  8. 
  cur 
  rax, 
  

   from 
  the 
  latter 
  of 
  which 
  it 
  is 
  distinguished 
  by 
  its 
  conspicuous 
  

   white 
  pubescence, 
  which 
  is 
  more 
  erect 
  than 
  usual 
  in 
  the 
  

   genus, 
  especially 
  on 
  the 
  hind 
  body. 
  

  

  Stenus 
  velox, 
  n. 
  sp. 
  (Sect. 
  II. 
  B, 
  Erichson.) 
  

  

  Elongatus, 
  angustus, 
  nigerriraus, 
  parcissime 
  pubescens, 
  fortiter 
  

   punctatus, 
  sat 
  nitidus 
  ; 
  antennis, 
  palpis 
  pedibusque 
  elongatis, 
  

   pallide 
  flavis. 
  

  

  Long. 
  5 
  1 
  millim. 
  

  

  Head 
  excavate, 
  with 
  a 
  slight, 
  narrow, 
  less 
  punctate 
  eleva- 
  

   tion 
  in 
  the 
  middle. 
  Thorax 
  very 
  long 
  and 
  narrow, 
  subcylin- 
  

  

  