﻿306 
  Dr. 
  Sharp 
  oji 
  the 
  Rhynchophoroiis 
  

  

  There 
  is 
  nothing 
  to 
  distinguish 
  this 
  insect 
  generically 
  from 
  

   Tropideres 
  albirostris, 
  except 
  the 
  structure 
  of 
  the 
  antennae 
  of 
  the 
  

   male, 
  and 
  I 
  prefer 
  therefore 
  not 
  to 
  establish 
  a 
  new 
  genus 
  for 
  it. 
  

   The 
  rostrum 
  is 
  very 
  short, 
  formed 
  as 
  in 
  T. 
  albirostris 
  and 
  vilis, 
  

   and 
  the 
  eyes 
  are 
  similar 
  in 
  form 
  and 
  position 
  to 
  what 
  they 
  are 
  in 
  

   the 
  species 
  named. 
  The 
  antennee 
  are 
  black, 
  with 
  the 
  basal 
  joint 
  

   short, 
  rather 
  shorter 
  than 
  the 
  second, 
  the 
  seventh 
  bearing 
  some 
  

   white 
  pubescence; 
  in 
  the 
  male 
  the 
  joints 
  from 
  the 
  fifth 
  onwards 
  

   are 
  dilated 
  and 
  flattened, 
  and 
  on 
  the 
  under 
  side 
  are 
  hirsute 
  ; 
  in 
  the 
  

   female 
  they 
  bear 
  a 
  broad 
  three-jointed 
  club, 
  the 
  terminal 
  joint 
  

   being 
  a 
  good 
  deal 
  smaller 
  than 
  those 
  preceding 
  it. 
  The 
  form 
  of 
  

   the 
  thorax 
  and 
  its 
  carina 
  are 
  like 
  those 
  of 
  T. 
  albirostris. 
  The 
  

   elytra 
  have 
  a 
  very 
  feeble 
  elevation 
  of 
  the 
  surface 
  — 
  not 
  amounting 
  

   to 
  a 
  tubercle 
  — 
  at 
  the 
  base 
  of 
  each 
  near 
  the 
  suture. 
  The 
  under 
  

   surface 
  is 
  not 
  variegate. 
  The 
  tibiee 
  are 
  obscurely 
  variegate, 
  the 
  

   basal 
  joint 
  of 
  the 
  tarsi 
  more 
  distinctly 
  white. 
  

  

  Mr. 
  Lewis 
  obtained 
  a 
  small 
  series 
  of 
  this 
  species 
  at 
  

   Jimsai 
  in 
  the 
  Island 
  of 
  Yezo. 
  

  

  Group 
  2. 
  Thoracic 
  carina 
  consisting 
  of 
  two 
  curves, 
  

   united 
  in 
  front 
  of 
  the 
  scutellum 
  so 
  as 
  to 
  form 
  a 
  

   sharp 
  angle 
  there. 
  Antennae 
  thick. 
  Species 
  9. 
  

  

  9. 
  Tropideres 
  crassicornis, 
  n. 
  sp. 
  

  

  Niger, 
  rostro 
  valde 
  deflexo, 
  niveo, 
  elytris 
  ad 
  basin 
  plaga 
  magna, 
  

   communi, 
  palHda 
  ; 
  antennis 
  crassiusculis, 
  clava 
  parum 
  latiore, 
  

   articulis 
  duobus 
  ultimis 
  brevibus. 
  Long. 
  5 
  — 
  5^ 
  mm. 
  

  

  Antennae 
  stout, 
  the 
  first 
  joint 
  of 
  the 
  club 
  as 
  long 
  as 
  the 
  following 
  

   two 
  together. 
  Bostrum 
  moderately 
  long, 
  much 
  dilated 
  at 
  the 
  

   extremity, 
  densely 
  covered 
  with 
  snow-white 
  pubescence, 
  which 
  

   extends 
  backwards 
  under 
  the 
  eyes. 
  Thorax 
  much 
  narrowed 
  in 
  

   front, 
  the 
  surface 
  uneven, 
  the 
  carina 
  placed 
  near 
  the 
  base, 
  strongly 
  

   augulate 
  in 
  the 
  middle, 
  and 
  deeply 
  sinuate 
  at 
  each 
  side. 
  Elytra 
  

   with 
  a 
  large 
  elevation 
  on 
  each 
  near 
  the 
  scutellum, 
  and 
  with 
  the 
  

   third 
  interstice 
  strongly 
  elevated 
  on 
  the 
  dechvous 
  part 
  ; 
  blackish 
  

   in 
  colour, 
  but 
  with 
  a 
  very 
  large 
  pallid 
  patch 
  occupying 
  a 
  large 
  

   iwrtion 
  of 
  tlie 
  basal 
  area, 
  also 
  obscurely 
  variegate 
  near 
  the 
  apex. 
  

   Legs 
  stout, 
  but 
  little 
  variegate. 
  Under 
  siu'face 
  clothed 
  with 
  pallid 
  

   pubescence. 
  

  

  Of 
  this 
  very 
  distinct 
  species, 
  two 
  examples, 
  of 
  the 
  

   male 
  sex, 
  were 
  found 
  at 
  Junsai. 
  

  

  