﻿Coleoptera 
  of 
  Japan. 
  307 
  

  

  Gboup 
  3. 
  Thoracic 
  carina 
  forming 
  a 
  curve 
  with 
  its 
  

   convexity 
  forwards, 
  and 
  so 
  more 
  approximate 
  to 
  the 
  

   elytra 
  at 
  the 
  shoulders 
  than 
  at 
  the 
  scutellum. 
  

   Antennae 
  short 
  ; 
  eyes 
  placed 
  chiefly 
  on 
  anterior 
  

   aspect 
  of 
  the 
  head. 
  Species 
  10. 
  

  

  10. 
  T7'opideres 
  rufescens. 
  

  

  Litocerus 
  rufescens, 
  Eoelofs, 
  C. 
  E. 
  Ent. 
  Belg., 
  xxii., 
  

   p. 
  Iv. 
  

  

  This 
  insect 
  agrees 
  with 
  T. 
  sepicola 
  in 
  the 
  shape 
  and 
  

   position 
  of 
  the 
  thoracic 
  carina, 
  but 
  differs 
  greatly 
  there- 
  

   from 
  in 
  the 
  form 
  of 
  the 
  rostrum 
  and 
  the 
  position 
  of 
  the 
  

   eyes, 
  and 
  in 
  these 
  points 
  comes 
  nearer 
  to 
  T. 
  alhirostris 
  ; 
  

   the 
  antennae 
  are 
  rather 
  slender, 
  but 
  the 
  club, 
  although 
  

   not 
  broad, 
  is 
  well 
  marked 
  ; 
  the 
  middle 
  coxae 
  are 
  widely 
  

   separated. 
  

  

  Group 
  4. 
  Thoracic 
  carina 
  slightly 
  sinuous, 
  the 
  thorax 
  

   abruptly 
  narrowed 
  behind 
  it, 
  so 
  as 
  to 
  appear 
  sepa- 
  

   rated 
  by 
  a 
  deep 
  excision 
  from 
  the 
  elytra. 
  Eyes 
  

   lateral. 
  Species 
  11 
  — 
  13. 
  

  

  11. 
  Tropideres 
  brevirostris, 
  n. 
  sp. 
  

  

  T. 
  niveirostris 
  proxime 
  af&nis 
  ; 
  niger, 
  griseo-fasco 
  tomentosus, 
  

   minus 
  variegatus, 
  rostro 
  anterius 
  albidescente 
  ; 
  elytris 
  obsolete 
  

   tuberculatis 
  ; 
  thoracis 
  carina 
  prsebasali 
  subrecta 
  ; 
  antennis 
  pedi- 
  

   busque 
  rufescentibus 
  parum 
  variegatis. 
  Long, 
  rostro 
  subdeflexo 
  

   4 
  mm. 
  

  

  This 
  is 
  very 
  closely 
  allied 
  to 
  T. 
  niveirostris 
  and 
  to 
  

   T. 
  nodulosus, 
  but 
  I 
  cannot 
  consider 
  it 
  at 
  present 
  as 
  a 
  

   variety 
  of 
  either 
  ; 
  its 
  surface 
  is 
  more 
  obscurely 
  coloured 
  

   and 
  less 
  variegate, 
  and 
  it 
  differs 
  also 
  from 
  T. 
  niveirostris 
  

   in 
  that 
  the 
  thoracic 
  carina 
  is 
  considerably 
  less 
  deflexed 
  

   backwards 
  at 
  the 
  sides 
  ; 
  the 
  white 
  colour 
  on 
  the 
  beak 
  

   does 
  not 
  extend 
  backwards 
  between 
  the 
  eyes. 
  From 
  

   T. 
  nodidosus 
  it 
  is 
  readily 
  enough 
  distinguished 
  by 
  the 
  

   obscure 
  colour, 
  and 
  by 
  the 
  fact 
  that 
  the 
  apical 
  nodule 
  of 
  

   the 
  elytra 
  is 
  absent. 
  

  

  Sapporo. 
  Only 
  one 
  specimen 
  was 
  met 
  with, 
  and 
  

   unfortunately 
  it 
  is 
  in 
  bad 
  preservation. 
  

  

  TRANS. 
  ENT. 
  SOC. 
  LOND. 
  1891. 
  — 
  PART 
  II. 
  (jUNE.) 
  Y 
  

  

  