﻿324 
  Dr. 
  Sharp 
  on 
  the 
  Rhynchopliorous 
  

  

  Choragus 
  cryptocephalus, 
  n. 
  sp. 
  

  

  Nigerrimus, 
  densisssime 
  punctatus 
  opacus, 
  antennis, 
  articulis 
  

   basalibus 
  fusco-testaceis 
  ; 
  elj'tris 
  seriatim 
  fortiter 
  punctatis, 
  inter- 
  

   stitiis 
  primo 
  et 
  secundo 
  pone 
  basin 
  irregularibus. 
  Long, 
  vix 
  

   3 
  mm. 
  

  

  This 
  is 
  smaller 
  than 
  C. 
  compactus, 
  and 
  the 
  angles 
  of 
  

   the 
  thorax, 
  though 
  very 
  acute 
  and 
  prolonged 
  backwards 
  

   under 
  the 
  shoulders 
  of 
  the 
  elytra, 
  do 
  not 
  form 
  a 
  definite 
  

   process, 
  as 
  in 
  G. 
  compactiis 
  : 
  also 
  there 
  is 
  a 
  peculiarity 
  

   by 
  which 
  the 
  species 
  may 
  be 
  distinguished, 
  there 
  being 
  

   near 
  the 
  base 
  a 
  kind 
  of 
  isthmus 
  by 
  which 
  the 
  third 
  

   interstice 
  appears 
  to 
  pass 
  across 
  the 
  second 
  to 
  form 
  a 
  

   connection 
  with 
  the 
  suture. 
  The 
  colour 
  is 
  jet 
  black, 
  and 
  

   the 
  sculpture 
  of 
  the 
  thorax 
  is 
  not 
  so 
  rugulose 
  as 
  in 
  

   C. 
  compactus. 
  

  

  Nikko, 
  two 
  specimens 
  ; 
  and 
  from 
  the 
  same 
  locality 
  

   an 
  individual 
  which 
  may 
  be 
  either 
  a 
  small 
  variety, 
  being 
  

   only 
  one-half 
  the 
  size, 
  or 
  a 
  distinct 
  species, 
  more 
  pro- 
  

   bably 
  the 
  latter, 
  

  

  Choragus 
  nmndulus, 
  n. 
  sp. 
  

  

  Sat 
  elongatus, 
  subcylindricus, 
  fuscns, 
  elj'tris 
  pallidioribus, 
  auteu- 
  

   narum 
  basi 
  pedibusque 
  testaceis, 
  antennis 
  extrorsum 
  nigris 
  ; 
  pro- 
  

   tliorace 
  omnium 
  densissime 
  punctato 
  ; 
  elytris 
  regulariter 
  profunda 
  

   striatis, 
  iuterstitiis 
  convexis, 
  striis 
  crebrius 
  punctatis. 
  Long. 
  

   2|- 
  mm. 
  

  

  This 
  is 
  more 
  cylindrical 
  in 
  form 
  than 
  the 
  other 
  

   Japanese 
  Choragi, 
  and 
  is 
  readily 
  distinguished 
  by 
  its 
  

   shape, 
  and 
  by 
  the 
  deep 
  striation 
  of 
  the 
  elytra 
  from 
  

   C. 
  compactus 
  and 
  C. 
  cryptocephalus, 
  while 
  from 
  C. 
  ano- 
  

   hioides 
  and 
  the 
  rest 
  of 
  the 
  genus 
  it 
  differs 
  by 
  the 
  fact 
  

   that 
  the 
  base 
  of 
  the 
  thorax 
  has 
  on 
  each 
  side 
  a 
  small 
  

   piece 
  produced 
  under 
  the 
  shoulders 
  of 
  the 
  elj'tra. 
  The 
  

   antennae 
  are 
  elongate, 
  with 
  long 
  excessively 
  loosel}''- 
  

   articulated 
  club. 
  The 
  punctuation 
  of 
  the 
  thorax 
  is 
  

   extremely 
  dense, 
  and 
  the 
  basal 
  carina 
  is 
  a 
  little 
  angulate 
  

   in 
  the 
  middle. 
  The 
  minute 
  punctuation 
  on 
  the 
  elytra 
  

   does 
  not 
  render 
  them 
  quite 
  dull. 
  

  

  25th 
  July, 
  1881, 
  4th 
  August, 
  1881. 
  Three 
  specimens. 
  

  

  