﻿Types 
  of 
  Oriental 
  Carabidae. 
  149 
  

  

  Ross, 
  xxxiv, 
  1900, 
  476) 
  drew 
  attention 
  to 
  the 
  fact 
  that 
  

   Bates' 
  Ceylon 
  species 
  also 
  belonged 
  to 
  the 
  genus 
  Arseno- 
  

   xenus, 
  and 
  expressed 
  surprise 
  that 
  Bates 
  should 
  not 
  have 
  

   detected 
  this. 
  Actually 
  Bates' 
  genus 
  is 
  identical 
  with 
  

   Macleay's 
  Dicoelindus, 
  and 
  his 
  A. 
  harpaloides 
  with 
  D. 
  

   felspaticus. 
  

  

  Macleay 
  thought 
  his 
  genus 
  was 
  connected 
  through 
  

   Microcejjhalus 
  with 
  Dicoelus; 
  these 
  are 
  American 
  genera, 
  

   regarding 
  which 
  I 
  can 
  express 
  no 
  opinion. 
  Bates 
  says 
  

   that 
  his 
  Arsenoxenus 
  is 
  allied 
  to 
  Loxandrus. 
  No 
  doubt 
  

   Dicoelindus 
  belongs 
  to 
  the 
  group 
  Pterostichini, 
  but, 
  as 
  

   Bates 
  points 
  out, 
  it 
  differs 
  from 
  all 
  members 
  of 
  that 
  group 
  

   in 
  that 
  the 
  front 
  tarsal 
  joints 
  of 
  the 
  (^ 
  are 
  not 
  dilated. 
  

  

  In 
  addition 
  to 
  Java, 
  I 
  have 
  records 
  from 
  Palon, 
  Bhamo, 
  

   Tharrawaddy, 
  and 
  Rangoon 
  in 
  Burma, 
  Jorhat 
  in 
  Assam, 
  

   and 
  Dacca 
  and 
  Sahibganj 
  in 
  Bengal. 
  

  

  17. 
  Amblystomus 
  (Trechus) 
  convexus.' 
  Macleay 
  put 
  this 
  

   insect 
  under 
  Trechus 
  with 
  considerable 
  doubt. 
  He 
  tells 
  

   us 
  that 
  the 
  unique 
  specimen 
  was 
  even 
  then 
  (1825) 
  in 
  such 
  

   a 
  bad 
  state 
  that 
  he 
  was 
  unable 
  to 
  examine 
  it 
  for 
  fresh 
  

   generic 
  characters. 
  The 
  species 
  is, 
  I 
  think, 
  the 
  only 
  one 
  

   belonging 
  to 
  the 
  genus 
  Amblystomus 
  so 
  far 
  recorded 
  from 
  

   Java. 
  I 
  add 
  what 
  I 
  can 
  to 
  Macleay's 
  description. 
  

  

  Amblystomus 
  convexus. 
  Length 
  3 
  25 
  mill. 
  Width 
  : 
  

   head 
  "75, 
  thorax 
  I'OO, 
  elytra 
  1*50 
  mill. 
  

  

  Black, 
  moderately 
  shiny, 
  mouth 
  parts 
  and 
  legs 
  reddish-brown. 
  

  

  Head 
  wide, 
  smooth, 
  convex, 
  frontal 
  foveae 
  shallow, 
  clypeus 
  

   emarginate, 
  only 
  slightly 
  asymmetrical; 
  eyes 
  flat. 
  

  

  Prothorax 
  transverse, 
  widest 
  before 
  middle, 
  a 
  little 
  emarginate 
  

   in 
  front, 
  rounded 
  behind, 
  the 
  sides 
  of 
  the 
  base 
  coming 
  forward 
  

   to 
  meet 
  the 
  hind 
  angles, 
  which 
  are 
  obtuse 
  ; 
  sides 
  narrowly 
  bordered, 
  

   not 
  sinuate 
  behind 
  ; 
  surface 
  smooth, 
  convex, 
  rather 
  flattened 
  out 
  

   near 
  hind 
  angles, 
  transverse 
  impressions 
  fairly 
  well 
  marked, 
  median 
  

   line 
  faint. 
  

  

  Elytra 
  parallel, 
  shoulders 
  strongly 
  marked, 
  rounded 
  behind 
  

   without 
  sinuation 
  near 
  apex, 
  striae 
  faint 
  and 
  very 
  faintly 
  punctate, 
  

   obsolete 
  at 
  sides. 
  

  

  The 
  species 
  resembles 
  in 
  form 
  the 
  example 
  of 
  Motchul- 
  

   sky's 
  A. 
  {Hispalis) 
  fuscescens 
  (Et. 
  Ent. 
  1858, 
  23) 
  from 
  

   F. 
  Walker's 
  Collection, 
  now 
  in 
  the 
  British 
  Museum, 
  but 
  it 
  

   is 
  smaller 
  and 
  the 
  hind 
  angles 
  of 
  the 
  thorax 
  are 
  less 
  rounded. 
  

  

  18. 
  Guathiaphanus 
  vulneripennis, 
  Macleay's 
  genus 
  has 
  

  

  