﻿the 
  Staphylinidae 
  of 
  Japan. 
  119 
  

  

  this 
  part 
  it 
  is 
  intermediate 
  between 
  Phihnihus 
  and 
  Eucibdelus. 
  

   The 
  maxillary 
  palpi 
  are 
  stouter 
  than 
  those 
  of 
  P/rilonthus, 
  but 
  

   the 
  proportions 
  of 
  their 
  joints 
  are 
  similar, 
  and, 
  like 
  all 
  the 
  

   other 
  parts 
  of 
  the 
  tropin, 
  they 
  are 
  rather 
  short 
  ; 
  the 
  second 
  

   joint 
  of 
  the 
  labial 
  palpi 
  is 
  scarcely 
  longer 
  than 
  the 
  basal 
  joint 
  

   and 
  shorter 
  than 
  the 
  terminal 
  joint. 
  The 
  labrum 
  is 
  divided 
  

   to 
  the 
  base 
  and 
  its 
  two 
  lobes 
  are 
  larger 
  than 
  in 
  Philonthus, 
  

   though 
  similarly 
  formed. 
  The 
  head 
  is 
  short 
  and 
  has 
  a 
  neck 
  

   about 
  half 
  its 
  width. 
  The 
  thorax 
  has 
  the 
  sides 
  extremely 
  

   deflexecl, 
  the 
  marginal 
  line 
  not 
  visible 
  from 
  above 
  ; 
  it 
  has 
  no 
  

   tubercular 
  prominences 
  near 
  the 
  front 
  angles 
  and 
  its 
  side- 
  

   pieces 
  are 
  not 
  inflexed. 
  The 
  legs 
  are 
  rather 
  slender, 
  the 
  

   tibial 
  spurs 
  elongate, 
  the 
  claws 
  small, 
  the 
  front 
  feet 
  in 
  the 
  

   female, 
  as 
  well 
  as 
  in 
  the 
  male, 
  moderately 
  dilated. 
  The 
  

   metasternum 
  short. 
  

  

  Philekerius 
  elegans, 
  n. 
  sp. 
  

  

  Niger 
  ; 
  elytris 
  abdornineque 
  opacis, 
  pube 
  griseo-submaculata 
  ves- 
  

   titis 
  ; 
  capite 
  thoraceque 
  nitidulis, 
  paree 
  obsoleteque 
  punctatis, 
  

   parceque 
  pubescentibus 
  ; 
  antennis 
  pedibusque 
  sordide 
  rufis, 
  his 
  

   femoribus, 
  illis 
  articulo 
  basali 
  fuscis. 
  

  

  Long. 
  13 
  inillini. 
  

  

  Antennas 
  rather 
  short, 
  not 
  stout, 
  simple, 
  not 
  at 
  all 
  serrate, 
  

   penultimate 
  joint 
  not 
  quite 
  so 
  long 
  as 
  broad. 
  Head 
  rather 
  

   short 
  and 
  broad, 
  with 
  rounded 
  hind 
  angles; 
  eyes 
  rather 
  large, 
  

   extending 
  rather 
  more 
  than 
  half 
  the 
  length 
  of 
  the 
  sides; 
  it 
  

   has 
  some 
  faint 
  blue 
  or 
  green 
  reflexions, 
  and 
  the 
  fine 
  distant 
  

   punctures 
  are 
  evenly 
  distributed 
  over 
  its 
  surface, 
  a 
  fine 
  hair 
  

   rising 
  from 
  each. 
  Thorax 
  slender, 
  narrowed 
  behind. 
  Elytra 
  

   short, 
  not 
  longer 
  than 
  the 
  thorax, 
  indistinctly 
  densely 
  punc- 
  

   tate, 
  tomentose, 
  of 
  a 
  blackish 
  or 
  fuscous 
  colour, 
  with 
  indistinct 
  

   spots 
  of 
  a 
  grisescent 
  or 
  a 
  very 
  pallid 
  yellow 
  colour. 
  Hind 
  

   body 
  tomentose 
  like 
  the 
  elytra, 
  but 
  the 
  pallid 
  pubescence 
  

   scanty 
  and 
  not 
  forming 
  definite 
  spots. 
  

  

  This 
  species 
  was 
  found 
  in 
  the 
  nests 
  of 
  a 
  black 
  ant 
  (having 
  

   the 
  habits 
  of 
  Formica 
  fuliginosa) 
  at 
  Bukenji 
  on 
  the 
  1st 
  and 
  

   13th 
  of 
  April, 
  1884, 
  four 
  examples 
  being 
  captured. 
  The 
  

   sexual 
  differences 
  are 
  small, 
  consisting 
  only 
  of 
  a 
  feeble 
  emar- 
  

   gination 
  of 
  the 
  last 
  ventral 
  plate 
  in 
  the 
  male. 
  

  

  Phytolinus, 
  nov. 
  gen. 
  

  

  Caput 
  subquadratum 
  ; 
  labrum 
  permagnum, 
  fissum 
  ; 
  antennae 
  ad 
  

   apicem 
  subserratae 
  ; 
  palpi 
  subrobusti, 
  ligula 
  fissa. 
  Tibiae 
  ante- 
  

  

  