﻿the 
  Staphylinidse 
  of 
  Japan. 
  473 
  

  

  prothorace 
  transverso, 
  angulis 
  posterioribus 
  obtusis 
  haud 
  rotun- 
  

   datis. 
  

   Long. 
  4j 
  millim. 
  

  

  Antennas 
  rather 
  long 
  and 
  slender, 
  slightly 
  thicker 
  exter- 
  

   nally 
  ; 
  penultimate 
  joint 
  longer 
  than 
  broad; 
  palpi 
  yellow. 
  

   Head 
  sparingly 
  and 
  distinctly 
  but 
  not 
  coarsely 
  punctured. 
  

   Thorax 
  about 
  twice 
  as 
  broad 
  as 
  long, 
  a 
  good 
  deal 
  narrower 
  

   than 
  the 
  elytra, 
  nearly 
  truncate 
  in 
  front, 
  gently 
  rounded 
  at 
  

   the 
  sides 
  in 
  front, 
  and 
  narrowed 
  behind, 
  somewhat 
  coarsely 
  

   and 
  sparingly 
  punctured. 
  Elytra 
  about 
  twice 
  as 
  long 
  as 
  the 
  

   thorax, 
  coarsely 
  punctate. 
  

  

  Iwakisan 
  ; 
  four 
  specimens. 
  

  

  Closely 
  allied 
  to 
  0. 
  simplex, 
  but 
  larger, 
  darker 
  in 
  colour, 
  

   more 
  coarsely 
  punctured, 
  and 
  with 
  all 
  the 
  angles 
  of 
  the 
  thorax 
  

   less 
  rounded. 
  

  

  Trigonodemus 
  lebioides. 
  

  

  Arimimelus 
  lebioides, 
  Kr. 
  Deutsche 
  eut. 
  Zeitschr. 
  1887, 
  p. 
  10->. 
  

  

  Oyayama 
  and 
  Nikko, 
  in 
  June. 
  Occurs 
  in 
  large 
  fungi 
  on 
  

   trees. 
  

  

  I 
  am 
  indebted 
  to 
  Dr. 
  Horn 
  for 
  pointing 
  out 
  to 
  me 
  that 
  this 
  

   insect 
  is 
  probably 
  congeneric 
  with 
  the 
  very 
  rare 
  North- 
  

   American 
  T. 
  striatus, 
  Lee. 
  Kraatz, 
  when 
  he 
  described 
  

   Arimimelus, 
  placed 
  it 
  in 
  the 
  family 
  Silphidas, 
  thinking 
  it 
  

   allied 
  to 
  Pteroloma. 
  The 
  Japanese 
  insect 
  is 
  very 
  rare, 
  so 
  

   that 
  I 
  have 
  not 
  at 
  my 
  disposal 
  a 
  specimen 
  for 
  dissection 
  ; 
  but 
  

   I 
  see 
  no 
  reason 
  for 
  doubting 
  that 
  the 
  position 
  near 
  Lathri- 
  

   mceum 
  assigned 
  to 
  Trigonodemus 
  by 
  the 
  North-American 
  

   entomologists 
  is 
  correct. 
  At 
  any 
  rate 
  the 
  Japanese 
  insect 
  is 
  

   but 
  remotely 
  related 
  to 
  Pteroloma. 
  Whether 
  the 
  Japanese 
  

   and 
  North-American 
  insects 
  are 
  strictly 
  congeneric 
  there 
  is 
  

   some 
  doubt, 
  as 
  the 
  species 
  from 
  the 
  latter 
  region 
  is 
  unknown 
  

   to 
  me 
  and 
  Leconte's 
  characters 
  for 
  the 
  genus 
  are 
  very 
  brief; 
  

   the 
  only 
  discrepancy 
  I 
  notice 
  between 
  those 
  characters 
  and 
  

   the 
  Japanese 
  insect 
  is 
  that 
  in 
  the 
  latter 
  the 
  middle 
  tibia? 
  are 
  

   almost 
  entirely 
  unarmed. 
  

  

  Eudectus 
  rufulus. 
  

  

  Eudeetus 
  Giraudi, 
  var. 
  rufulus, 
  Weise, 
  Deutsche 
  ent. 
  Zeitschr. 
  1877, 
  

   p. 
  96 
  ; 
  Sharp, 
  Ent. 
  Month. 
  Mag. 
  xxiii. 
  p. 
  209. 
  

  

  Nagasaki, 
  25th 
  March, 
  1881 
  ; 
  a 
  single 
  example. 
  

  

  Omalium 
  curtellum, 
  n. 
  sp. 
  

  

  Breve, 
  convexum, 
  nitidum, 
  testaceum, 
  glabrum, 
  fortitcr 
  punctata 
  m 
  ; 
  

  

  an 
  tennis 
  crassiusculis. 
  

   Loner. 
  3 
  millim. 
  

  

  