﻿Types 
  of 
  Oriental 
  Carabidae. 
  155 
  

  

  Elytra 
  fairly 
  short, 
  with 
  well-marked 
  shoulders, 
  at 
  which 
  the 
  

   border 
  is 
  distinctly 
  angled, 
  margin 
  strongly 
  sinuate 
  before 
  apex; 
  

   striae 
  well 
  marked, 
  impunctate, 
  a 
  long 
  scutellary 
  striole 
  between 
  

   1 
  and 
  2, 
  intervals 
  flat, 
  narrow 
  and 
  convex 
  towards 
  apex, 
  where 
  the 
  

   odd 
  are 
  a 
  little 
  wider 
  than 
  the 
  even 
  ones, 
  very 
  finely 
  but 
  not 
  closely 
  

   punctate, 
  3, 
  5, 
  and 
  7 
  with 
  a 
  series 
  of 
  about 
  15 
  larger 
  punctures, 
  on 
  

   3 
  adjoining 
  stria 
  2, 
  on 
  5 
  adjoining 
  stria 
  5, 
  and 
  on 
  7 
  adjoining 
  stria 
  

   7, 
  8 
  a 
  httle 
  carinate 
  towards 
  apex, 
  9 
  wide 
  — 
  especially 
  behind 
  where 
  

   the 
  sinuation 
  occurs 
  and 
  where 
  there 
  are 
  two 
  or 
  three 
  very 
  large 
  

   punctures. 
  

  

  Underside 
  smooth, 
  shiny, 
  prosternal 
  process 
  not 
  bordered, 
  metepi- 
  

   stema 
  long 
  and 
  narrow 
  with 
  a 
  furrow 
  on 
  inner 
  side 
  ; 
  last 
  ventral 
  

   segment 
  with 
  two 
  setae 
  on 
  each 
  side, 
  both 
  on 
  the 
  margin 
  and 
  widely 
  

   distant 
  from 
  each 
  other. 
  Tarsi 
  smooth 
  on 
  upper 
  surface; 
  front 
  

   and 
  intermediate 
  tarsi 
  {(^) 
  with 
  the 
  first 
  four 
  joints 
  narrowly 
  dilated, 
  

   and 
  apparently 
  clothed 
  with 
  scales 
  beneath; 
  I 
  cannot, 
  however, 
  

   see 
  this 
  as 
  clearly 
  as, 
  from 
  his 
  figure, 
  Hoj^e 
  must 
  have 
  done. 
  

  

  In 
  the 
  fig. 
  the 
  hgula 
  and 
  labial 
  palpi 
  are 
  badly 
  done 
  ; 
  

   the 
  former 
  is 
  very 
  narrow, 
  with 
  two 
  bristles 
  (one 
  has 
  dis- 
  

   appeared), 
  and 
  it 
  is 
  enveloped 
  by 
  the 
  paraglossae, 
  Avhich 
  

   are 
  glabrous, 
  truncate 
  in 
  front, 
  with 
  the 
  angles 
  rounded. 
  

   The 
  penultimate 
  joint 
  of 
  the 
  labial 
  palpi 
  is 
  plurisetose. 
  

  

  Platymefopus 
  amoenus 
  was 
  described 
  by 
  Dejean 
  (Spec; 
  

   Gen. 
  iv, 
  1829, 
  73) 
  from 
  Java, 
  and 
  Bates 
  identified 
  with 
  it 
  

   a 
  number 
  of 
  specimens 
  from 
  Bengal 
  and 
  Burma, 
  some 
  of 
  

   which 
  are 
  in 
  my 
  collection. 
  These 
  insects 
  are 
  evidently 
  

   closely 
  allied 
  to 
  D. 
  torta, 
  but 
  I 
  doubt 
  their 
  identity 
  with 
  

   it, 
  and 
  I 
  am 
  not 
  convinced 
  that 
  Bates' 
  determination 
  

   is 
  correct. 
  I 
  think 
  probably 
  D. 
  torta 
  = 
  P. 
  amoenus, 
  and 
  

   hope 
  to 
  elucidate 
  this 
  later 
  on. 
  Meanwhile 
  I 
  prefer 
  to 
  

   compare 
  Macleay's 
  species 
  with 
  D. 
  {Selenophorus) 
  colom- 
  

   bensis 
  Nietn. 
  (Journ. 
  As. 
  Soc. 
  Bengal, 
  1857, 
  ii, 
  151). 
  Size 
  

   larger, 
  colour 
  very 
  similar 
  — 
  though 
  a 
  little 
  more 
  coppery 
  ; 
  

   head 
  much 
  larger 
  compared 
  with 
  prothorax; 
  latter 
  a 
  

   little 
  more 
  convex 
  and 
  much 
  more 
  roughly 
  sculptured; 
  

   elytra 
  less 
  elongate, 
  striae 
  deeper, 
  intervals 
  more 
  strongly 
  

   punctured. 
  

  

  As 
  I 
  have 
  maintained 
  both 
  the 
  genera 
  Platymetopus 
  

   and 
  Dioryche, 
  hitherto 
  treated 
  as 
  synonyms, 
  I 
  ought 
  perhaps 
  

   to 
  say 
  a 
  word 
  or 
  two 
  about 
  them. 
  Lacordaire 
  (Gen. 
  Col. 
  

   i, 
  1854, 
  300) 
  made 
  Platymetopus 
  the 
  genus 
  and 
  Dioryche 
  

   (which 
  he 
  spells 
  inaccurately 
  Dyoriche) 
  the 
  synonym. 
  

   Gemminger 
  and 
  Harold 
  (Mun. 
  Cat. 
  1868, 
  287) 
  reversed 
  this 
  

  

  