﻿326 
  Dr. 
  D. 
  Sharp 
  on 
  

  

  Stenus 
  alienus. 
  

  

  Stenus 
  alienus, 
  Sharp, 
  Trans. 
  Ent. 
  Soc. 
  Lond. 
  1874, 
  p. 
  81. 
  

  

  This 
  was 
  found 
  as 
  far 
  north 
  as 
  Hakodate 
  and 
  is 
  apparently 
  

   the 
  most 
  common 
  of 
  the 
  Japanese 
  Steni. 
  

  

  Stenus 
  tenuipes. 
  

   Stenus 
  tenuipes, 
  Sharp, 
  Trans. 
  Ent. 
  Soc. 
  Lond. 
  1874, 
  p. 
  80. 
  

   This 
  was 
  obtained 
  as 
  far 
  north 
  as 
  Hakodate 
  and 
  Sapporo. 
  

  

  Stenus 
  anthracinus, 
  n. 
  sp. 
  (Sect. 
  I. 
  A**, 
  Erichson.) 
  

  

  Elongatus, 
  angustulus, 
  nigerrimus, 
  subopaeus, 
  palporum 
  basi 
  tes- 
  

  

  tacea 
  ; 
  capite 
  excavato, 
  vertice 
  summo 
  medio 
  anguste 
  carinato. 
  

   Long. 
  5 
  millini. 
  

  

  This 
  is 
  allied 
  only 
  to 
  S. 
  macies, 
  from 
  which 
  it 
  is 
  distin- 
  

   guished 
  by 
  the 
  very 
  black 
  colour 
  and 
  the 
  scarcely 
  perceptible 
  

   pubescence, 
  the 
  more 
  rugose 
  sculpture, 
  the 
  slender 
  carina 
  

   on 
  the 
  back 
  of 
  the 
  head, 
  and 
  by 
  the 
  black 
  legs. 
  The 
  basal 
  

   joint 
  of 
  the 
  palpi 
  and 
  the 
  base 
  of 
  the 
  next 
  joint 
  are 
  yellow. 
  

   The 
  thorax 
  is 
  slender, 
  rounded 
  at 
  the 
  sides, 
  very 
  densely, 
  

   rather 
  finely, 
  but 
  quite 
  rugosely 
  punctured. 
  Elytra 
  a 
  little 
  

   longer 
  than 
  the 
  thorax, 
  densely 
  rugose-punctate. 
  Hind 
  body 
  

   obsoletely 
  punctate, 
  the 
  segments 
  without 
  cusps. 
  Legs 
  

   slender 
  and 
  elongate, 
  quite 
  black. 
  

  

  Oyarna, 
  May 
  ; 
  Kashiwagi, 
  June 
  : 
  two 
  female 
  examples. 
  

  

  Stenus 
  Leioisius. 
  

  

  Stenus 
  Lewisius, 
  Sharp, 
  Trans. 
  Ent. 
  Soc. 
  Lond. 
  1874, 
  p. 
  82. 
  

  

  This 
  has 
  now 
  bfen 
  found 
  in 
  some 
  numbers 
  and 
  as 
  far 
  

   north 
  as 
  Otaru, 
  in 
  Yezo. 
  

  

  Stenus 
  lentus, 
  n. 
  sp. 
  (Sect. 
  I. 
  A***, 
  Erichson.) 
  

  

  Eobustus, 
  sat 
  nitidus, 
  niger 
  ; 
  palpis 
  testaceis 
  articulo 
  ultimo 
  fusces- 
  

   ceute, 
  pedibus 
  runs, 
  geniculis 
  fuscis 
  ; 
  fortiter 
  punctatus, 
  haud 
  

   rugosus 
  ; 
  elytris 
  thorace 
  paulo 
  longioribus. 
  

  

  Long. 
  7 
  millim. 
  

  

  Antennas 
  with 
  third 
  to 
  eighth 
  joints 
  piceous 
  ; 
  palpi 
  elon- 
  

   gate, 
  yellow, 
  the 
  terminal 
  joint 
  fuscescent, 
  but 
  not 
  on 
  its 
  

   basal 
  part. 
  Head 
  a 
  little 
  concave, 
  broadly 
  bisulcate, 
  the 
  

   grooves 
  separated 
  by 
  a 
  broad 
  interstice. 
  Thorax 
  a 
  little 
  

  

  