﻿On 
  the 
  Staphylinidse 
  of 
  Japan. 
  4G3 
  

  

  The 
  specimen 
  here 
  described 
  was 
  taken 
  at 
  a 
  distance 
  of 
  

   about 
  30 
  miles 
  from 
  the 
  spot 
  where 
  B. 
  piceus 
  was 
  found, 
  and 
  

   at 
  first 
  sight, 
  owing 
  to 
  the 
  greater 
  slenderness 
  of 
  its 
  tail 
  and 
  

   greater 
  length 
  of 
  its 
  dactyli, 
  appeared 
  to 
  be 
  merely 
  the 
  male 
  

   of 
  that 
  species. 
  But 
  further 
  examination 
  showed 
  that 
  the 
  

   basal 
  pectinal 
  tooth 
  is 
  considerably 
  the 
  largest 
  of 
  the 
  series, 
  a 
  

   character 
  which 
  there 
  are 
  good 
  reasons 
  for 
  supposing 
  belongs 
  

   to 
  the 
  female 
  alone. 
  But 
  even 
  if 
  this 
  be 
  not 
  the 
  case, 
  there 
  

   exists 
  between 
  the 
  two 
  forms 
  one 
  other 
  difference 
  which, 
  so 
  

   far 
  as 
  one's 
  experience 
  at 
  present 
  goes, 
  does 
  not 
  fall 
  within 
  

   the 
  limits 
  of 
  sexual 
  variation. 
  This 
  difference 
  is 
  to 
  be 
  found 
  

   in 
  the 
  form 
  of 
  the 
  pulmonary 
  stigmata. 
  These 
  apertures 
  in 
  

   B. 
  piceus 
  are 
  ovate 
  ; 
  but 
  in 
  B. 
  lobidens 
  they 
  are 
  more 
  slit- 
  

   like 
  and 
  furnish 
  to 
  a 
  certain 
  extent 
  a 
  link 
  between 
  the 
  ovate 
  

   form 
  of 
  B. 
  piceus 
  and 
  the 
  slit-like 
  form 
  found 
  in 
  most 
  other 
  

   Scorpions. 
  This 
  circumstance 
  justifies 
  the 
  retention 
  of 
  piceus 
  

   in 
  the 
  genus 
  Buthus. 
  

  

  LVI. 
  — 
  The 
  Staphylinidre 
  of 
  Japan. 
  

   By 
  Dr. 
  D. 
  Sharp. 
  

  

  [Concluded 
  from 
  p. 
  419.] 
  

   Group 
  PlESTINA. 
  

  

  Siagonium 
  nobile, 
  n. 
  sp. 
  

  

  Angustum, 
  subdepressum, 
  piceura 
  ; 
  antcnnarurn 
  basi 
  pedibusquo 
  

  

  rufis 
  ; 
  elytris 
  vage 
  rufescentibus, 
  irregulariter 
  punctatis 
  ; 
  thorace 
  

  

  medio 
  profunde 
  longitudinaliter 
  impresso. 
  

   Long. 
  5 
  millim. 
  

  

  Antennse 
  rather 
  stout, 
  moderately 
  long, 
  with 
  scanty 
  hairs. 
  

   Mandibles 
  porrect, 
  elongate. 
  Head 
  broad, 
  excavate, 
  pro- 
  

   duced 
  on 
  each 
  side 
  in 
  front 
  so 
  as 
  to 
  form 
  two 
  porrect, 
  acu- 
  

   minate, 
  slightly 
  convergent 
  processes; 
  rather 
  sparingly 
  

   punctate. 
  Thorax 
  transverse, 
  strongly 
  constricted 
  behind 
  ; 
  

   hind 
  angles 
  rectangular, 
  sparingly 
  punctate, 
  with 
  a 
  very 
  large 
  

   depression 
  on 
  each 
  side 
  and 
  with 
  an 
  elongate 
  deep 
  depres- 
  

   sion 
  on 
  the 
  middle. 
  Elytra 
  reddish, 
  black 
  to 
  a 
  greater 
  or 
  less 
  

   extent 
  behind 
  the 
  scutellum, 
  irregularly, 
  rather 
  sparingly 
  

   punctate, 
  and 
  longitudinally 
  depressed 
  towards 
  each 
  side. 
  

   Hind 
  body 
  red 
  at 
  the 
  extremity. 
  

  

  Nikko 
  and 
  Miyanoshita 
  ; 
  six 
  specimens. 
  

  

  32* 
  

  

  