﻿36 
  Dr. 
  D. 
  Sharp 
  on 
  

  

  Philonthus 
  bicaudus, 
  n. 
  sp. 
  (Group 
  4, 
  Ericlison.) 
  

  

  Niger 
  ; 
  capite, 
  thorace 
  elytrisque 
  nigro-subaeneis 
  ; 
  capite 
  ovato 
  ; 
  

  

  elytris 
  abdomineque 
  crebrius 
  punctatis. 
  

   Long. 
  14 
  miUim. 
  

  

  Antennas 
  rather 
  slender, 
  not 
  thicker 
  externally, 
  tenth 
  joint 
  

   quite 
  as 
  long 
  as 
  broad. 
  Head 
  narrow, 
  only 
  about 
  half 
  as 
  

   broad 
  as 
  the 
  elytra. 
  Thorax 
  much 
  narrowed 
  in 
  front; 
  elytra 
  

   and 
  scutellum 
  closely 
  punctate 
  ; 
  hind 
  body 
  rather 
  closely 
  

   punctate. 
  

  

  Only 
  a 
  single 
  individual 
  has 
  been 
  found 
  — 
  an 
  immature 
  

   female 
  — 
  but 
  the 
  species 
  is 
  so 
  distinct 
  that 
  it 
  will 
  not 
  be 
  

   mistaken 
  for 
  any 
  other 
  ; 
  it 
  resembles 
  the 
  species 
  of 
  the 
  

   European 
  P. 
  politus 
  group, 
  but 
  has 
  a 
  different 
  structure 
  of 
  

   the 
  front 
  tarsi 
  ; 
  these 
  are 
  (in 
  the 
  female) 
  much 
  dilated, 
  and 
  

   the 
  apical 
  joint 
  is 
  broad 
  and 
  deplanate 
  and 
  closely 
  spinose 
  

   beneath 
  ; 
  the 
  median 
  lobe 
  of 
  the 
  armature 
  is 
  remarkable 
  on 
  

   account 
  of 
  being 
  divided 
  into 
  two 
  long 
  slender 
  styles. 
  

  

  Found 
  at 
  Niigata 
  on 
  the 
  12th 
  September, 
  1881. 
  

  

  Philonthus 
  ItopteruSj 
  n. 
  sp. 
  (Group 
  4, 
  Ericlison.) 
  

  

  Latiusculus, 
  nitidior, 
  parce 
  punctatus, 
  piceus 
  ; 
  capite 
  nigro 
  ; 
  anten- 
  

  

  nis 
  pedibusque 
  rufis. 
  

   Long. 
  9 
  inillim. 
  

  

  Antennas 
  rather 
  short 
  and 
  stout, 
  but 
  the 
  basal 
  joints 
  rather 
  

   elongate, 
  the 
  four 
  or. 
  five 
  penultimate 
  joints 
  strongly 
  trans- 
  

   verse. 
  Head 
  extremely 
  shining, 
  suborbiculate, 
  with 
  only 
  a 
  

   few 
  coarse 
  punctures. 
  Thorax 
  rather 
  short, 
  subquadrate, 
  

   straight 
  at 
  the 
  sides, 
  piceous, 
  very 
  shining, 
  the 
  punctures 
  of 
  

   the 
  dorsal 
  series 
  rather 
  large. 
  Elytra 
  rather 
  longer 
  than 
  the 
  

   thorax, 
  piceous 
  black, 
  very 
  shining, 
  quite 
  sparingly 
  punc- 
  

   tured. 
  Hind 
  body 
  also 
  sparsely 
  punctate, 
  shining. 
  Legs 
  

   red, 
  tibise 
  infuscate 
  ; 
  middle 
  coxae 
  moderately 
  distant. 
  The 
  

   male 
  front 
  tarsi 
  broadly 
  dilated, 
  apical 
  ventral 
  plate 
  with 
  a 
  

   broad 
  shallow 
  excision. 
  

  

  A 
  single 
  example 
  of 
  this 
  very 
  distinct 
  species 
  was 
  met 
  

   with 
  at 
  Junsai, 
  in 
  Yezo. 
  

  

  Philonthus 
  micanticollis, 
  n. 
  sp. 
  (Group 
  4, 
  Ericlison.) 
  

  

  Niger, 
  fusco-pubeseens 
  ; 
  elytris 
  aeneis 
  ; 
  thorace 
  sericeo-mieante, 
  

   pedibus 
  testaceis, 
  tibiis 
  infuseatis, 
  antennarum 
  basi 
  palpisque 
  

  

  