﻿468 
  Dr. 
  D. 
  Sharp 
  on 
  

  

  Coleoptera 
  the 
  genus 
  is 
  placed 
  in 
  its 
  true 
  position, 
  next 
  to 
  

   Trygceus. 
  

  

  Occurs 
  with 
  Ips, 
  Peltastica, 
  and 
  other 
  beetles 
  at 
  the 
  rancid 
  

   sap 
  of 
  wounded 
  trees. 
  Not 
  rare 
  and 
  widely 
  distributed 
  in 
  the 
  

   forests. 
  

  

  Group 
  Leptochirina. 
  

  

  Priochirus 
  japonicus, 
  n. 
  sp. 
  

  

  Subcylindricus, 
  nigerrimus, 
  nitidus 
  ; 
  tibiis 
  apicein 
  versus 
  tarsisque 
  

   rut'escentibus 
  ; 
  mandibulis 
  brevibus, 
  dente 
  superiore 
  gracili, 
  erecto, 
  

   valde 
  curvato 
  ; 
  vertice 
  in 
  medio 
  conis 
  duobus 
  suberectis 
  approxi- 
  

   matis 
  munito. 
  

  

  Long. 
  13^ 
  millim. 
  

  

  This 
  species 
  is 
  not 
  closely 
  allied 
  to 
  any 
  other, 
  but 
  may 
  be 
  

   placed 
  near 
  the 
  Ceylonese 
  P. 
  mandibularis, 
  Kr. 
  The 
  very 
  

   short 
  mandibles 
  are 
  remarkable 
  on 
  account 
  of 
  the 
  very 
  diver- 
  

   gent 
  teeth, 
  the 
  superior 
  or 
  upright 
  tooth 
  being 
  much 
  curved. 
  

   The 
  head 
  has 
  the 
  vertex 
  very 
  deeply 
  canaliculate 
  in 
  the 
  

   middle 
  and 
  in 
  front 
  projects 
  in 
  the 
  form 
  of 
  two 
  elongate 
  

   conical 
  tubercles, 
  directed 
  more 
  forwards 
  than 
  upwards; 
  on 
  

   each 
  side 
  of 
  these 
  prominences 
  the 
  surface 
  is 
  depressed 
  and 
  

   has 
  some 
  coarse 
  irregular 
  sculpture. 
  The 
  thorax 
  is 
  short, 
  

   strongly 
  transverse, 
  rather 
  convex, 
  deeply 
  canaliculate, 
  and 
  

   with 
  numerous 
  punctures 
  at 
  the 
  base. 
  The 
  elytra 
  are 
  elon- 
  

   gate, 
  much 
  longer 
  than 
  the 
  thorax, 
  longitudinally 
  depressed 
  

   near 
  the 
  outside 
  towards 
  the 
  extremity. 
  

  

  Occurs 
  plentifully 
  in 
  the 
  touchwood 
  of 
  old 
  beech-trees 
  in 
  

   all 
  the 
  elevated 
  forests, 
  especially 
  at 
  Ilakone, 
  Oyayama, 
  and 
  

   in 
  the 
  island 
  of 
  Sado. 
  

  

  Group 
  Proteinina. 
  

  

  Megarth 
  rus 
  hem 
  ipterus. 
  

   Megarthrus 
  hemipterus, 
  Er. 
  Geu. 
  et 
  Spec. 
  Staph, 
  p. 
  906. 
  

   Two 
  specimens 
  ; 
  found 
  at 
  Bibi 
  or 
  Nikko. 
  

  

  Megarthrus 
  corticalis, 
  n. 
  sp. 
  

  

  Latus, 
  ferrugineus 
  ; 
  elytris 
  pallidioribus, 
  late 
  nigro-scriptis, 
  fortiter 
  

  

  punctatis. 
  

   Long. 
  2j 
  millim. 
  

  

  Antenna? 
  very 
  slender, 
  the 
  two 
  basal 
  joints 
  stout, 
  the 
  apical 
  

   joints 
  infuscate. 
  Thorax 
  strongly 
  transverse, 
  subobsoletely 
  

   rugose-punctate, 
  with 
  a 
  very 
  deep 
  channel 
  on 
  the 
  middle, 
  sides 
  

  

  