﻿Coleoptera 
  of 
  Japan. 
  327 
  

  

  Deropi/f/us 
  jocosus. 
  

  

  Fusco-niger, 
  superne,vage 
  griseo-picturatus, 
  capite 
  prothoraceque 
  

   rufescentibus 
  pronoto 
  basi 
  late 
  in 
  medio 
  nigricante, 
  antennarum 
  

   basi 
  pedibusque 
  rufis. 
  Long. 
  3 
  mm. 
  

  

  Antennae 
  with 
  the 
  first 
  and 
  second 
  joints 
  red, 
  stout, 
  the 
  following 
  

   joints 
  blackish, 
  extremely 
  slender; 
  club 
  large, 
  extremely 
  loosely 
  

   articulated. 
  Thorax 
  red, 
  with 
  the 
  base 
  in 
  the 
  middle 
  broadly 
  

   blackish, 
  extremely 
  densely 
  punctate, 
  very 
  sparingly 
  pubescent 
  ; 
  

   the 
  hind 
  angles 
  produced 
  beneath 
  the 
  shoulders 
  of 
  the 
  elytra 
  in 
  

   the 
  form 
  of 
  a 
  definite 
  lamina. 
  Elytra 
  with 
  series 
  of 
  very 
  coarse 
  

   punctures, 
  separated 
  by 
  narrow 
  interstices, 
  the 
  sculpture 
  somewhat 
  

   concealed 
  by 
  the 
  pubescence, 
  some 
  of 
  which 
  is 
  greyish, 
  the 
  most 
  

   conspicuous 
  being 
  a 
  flammulate 
  fascia 
  behind 
  the 
  middle. 
  Male 
  

   with 
  the 
  pygidium 
  inflexed, 
  very 
  elongate, 
  suboblong, 
  the 
  ventral 
  

   segments 
  much 
  abbreviate 
  in 
  the 
  middle, 
  the 
  metasternum 
  im- 
  

   pressed 
  and 
  tuberculate 
  on 
  each 
  side. 
  

  

  Only 
  one 
  example 
  has 
  been 
  found 
  of 
  this 
  very 
  inte- 
  

   resting 
  insect 
  ; 
  at 
  Fukiishima, 
  28th 
  July, 
  1881. 
  

  

  NOTIOXENUS. 
  

  

  This 
  genus 
  has 
  hitherto 
  only 
  been 
  recognised 
  as 
  found 
  

   in 
  St. 
  Helena, 
  where 
  it 
  possesses 
  numerous 
  species, 
  and 
  

   forms 
  one 
  of 
  the 
  most 
  remarkable 
  elements 
  of 
  the 
  

   coleopterous 
  fauna. 
  The 
  St. 
  Helena 
  species 
  of 
  the 
  genus 
  

   differ 
  considerably 
  in 
  some 
  structural 
  points, 
  such 
  as 
  

   the 
  coarseness 
  of 
  the 
  facets 
  of 
  the 
  eyes, 
  and 
  the 
  width 
  of 
  

   the 
  intercoxal 
  process 
  of 
  the 
  abdomen. 
  As 
  long 
  as 
  they 
  

   remain 
  in 
  one 
  genus, 
  the 
  two 
  Japanese 
  species 
  I 
  here 
  

   describe 
  must 
  also 
  be 
  placed 
  in 
  it, 
  and 
  likewise 
  the 
  New 
  

   Zealand 
  Anthvihus 
  inflatiis, 
  Sharp. 
  So 
  that 
  this 
  genus, 
  

   hitherto 
  considered 
  peculiar 
  to 
  St. 
  Helena, 
  is 
  now 
  found 
  

   to 
  exist 
  in 
  three 
  most 
  widely 
  separated 
  parts 
  of 
  the 
  

   world. 
  If 
  the 
  St. 
  Helena 
  genus 
  were 
  to 
  be 
  divided, 
  — 
  

   and 
  this 
  will 
  probably 
  be 
  found 
  necessary 
  when 
  the 
  

   classification 
  of 
  tlie 
  family 
  is 
  remodelled, 
  — 
  then 
  the 
  two 
  

   Japanese 
  species 
  would 
  form 
  two 
  distinct 
  genera, 
  and 
  

   the 
  New 
  Zealand 
  species 
  another. 
  Ai'ceocerus 
  purpureus, 
  

   Brown, 
  should 
  form 
  also 
  a 
  new 
  genus 
  between 
  Notioxeniis 
  

   and 
  Hojiioeodei-a. 
  

  

  Notioxenus 
  ivollastoni, 
  n. 
  sp. 
  

   Elongatus, 
  angustulus, 
  fuscus, 
  tomentosus, 
  indistincte 
  griseo- 
  

   variegatus, 
  antennarum 
  basi, 
  pedibusque 
  rufis. 
  Long. 
  2J 
  mm. 
  

  

  