﻿Types 
  of 
  Oriental 
  Carabidae. 
  145 
  

  

  Nat. 
  Ins. 
  iv, 
  1834, 
  407) 
  now 
  replaces 
  it. 
  (See 
  Bedel, 
  Cat. 
  

   rais. 
  des 
  Col. 
  du 
  Nord 
  de 
  TAfrique, 
  1897, 
  102 
  note 
  (1).) 
  

   Nietner's 
  Symphyus 
  unicolor 
  (Ann. 
  and 
  Mag. 
  of 
  Nat. 
  Hist. 
  

   3, 
  ii, 
  1858, 
  180) 
  from 
  Ceylon 
  is 
  probably 
  the 
  same 
  species, 
  

   but 
  I 
  have 
  not 
  yet 
  traced 
  the 
  type. 
  

  

  The 
  species 
  ranges 
  from 
  India 
  to 
  Indo-China, 
  and 
  

   southwards 
  into 
  Java. 
  

  

  12. 
  Dirotus 
  subiridescens. 
  The 
  genus 
  is 
  fully 
  described 
  

   by 
  Macleay, 
  who 
  thought 
  it 
  not 
  far 
  from 
  Dolichus, 
  but 
  it 
  

   seems 
  more 
  closelv 
  allied 
  to 
  Bates' 
  genus 
  Omjcholabis 
  

   (Trans. 
  Ent. 
  Soc."' 
  1873, 
  329). 
  The 
  description 
  of 
  the 
  

   species 
  is 
  so 
  short 
  that 
  I 
  am 
  giving 
  a 
  fresh 
  one. 
  In 
  addi- 
  

   tion 
  to 
  the 
  type 
  ((^), 
  there 
  are 
  two 
  examples 
  ((^ 
  9) 
  ^'^^ 
  

   from 
  Java 
  in 
  the 
  British 
  Museum 
  Collection, 
  the 
  $ 
  taken 
  

   by 
  Dr. 
  Horsfield, 
  the 
  (^ 
  ex 
  coll. 
  Bo 
  wring. 
  I 
  have 
  seen 
  no 
  

   other 
  specimens. 
  

  

  Dirotus 
  subiridescens, 
  ^J. 
  Length 
  (incl. 
  mandibles) 
  9*5 
  

   mill. 
  Width 
  4 
  mill. 
  

  

  Figured 
  by 
  Hope 
  (Col. 
  Man. 
  ii, 
  1838, 
  t. 
  2, 
  f. 
  1) 
  : 
  I 
  shall 
  

   refer 
  to 
  the 
  figure 
  in 
  the 
  course 
  of 
  the 
  description. 
  

  

  Black, 
  iridescent; 
  maxillae, 
  palpi, 
  antennae 
  (exc. 
  joint 
  3), 
  tro- 
  

   chanters, 
  tarsi, 
  and 
  apex 
  of 
  femora 
  and 
  tibiae 
  red-brown 
  (the 
  palpi 
  

   rather 
  lighter 
  than 
  the 
  other 
  parts); 
  mandibles, 
  labrum, 
  and 
  

   joint 
  3 
  of 
  antennae 
  dark 
  brown. 
  

  

  Head 
  smooth, 
  not 
  so 
  wide 
  nor 
  so 
  deeply 
  sunk 
  in 
  the 
  prothorax 
  as 
  

   shown 
  in 
  the 
  fig., 
  with 
  shallow 
  foveae 
  between 
  the 
  antennae, 
  clypeus 
  

   truncate, 
  suture 
  well 
  marked, 
  a 
  setiferous 
  pore 
  near 
  front 
  angles, 
  

   labrum 
  slightly 
  emarginate, 
  with 
  6 
  setae, 
  the 
  outer 
  ones 
  longest; 
  

   eyes 
  rather 
  flatter 
  than 
  shown 
  in 
  the 
  fig., 
  two 
  supra-orbital 
  pores, 
  

   the 
  hind 
  one 
  distant 
  from 
  eye 
  and 
  rather 
  behind 
  the 
  hind 
  margin 
  

   of 
  the 
  eye 
  ; 
  antennal 
  joints 
  approximately 
  equal, 
  except 
  2, 
  which 
  

   is 
  half 
  as 
  long 
  as 
  the 
  others, 
  pubescent 
  from 
  middle 
  of 
  4; 
  mandibles 
  

   and 
  palpi 
  very 
  long, 
  penultimate 
  joint 
  of 
  labials 
  distinctly 
  longer 
  

   than 
  in 
  fig., 
  maxillae 
  long 
  (but 
  shorter 
  than 
  mandibles) 
  and 
  hooked 
  

   at 
  tip, 
  with 
  a 
  serrate 
  inner 
  margin 
  (not 
  shown 
  in 
  fig.), 
  the 
  teeth 
  

   not 
  very 
  close 
  together, 
  buccal 
  fissure 
  very 
  close 
  to 
  eye. 
  

  

  Prothorax 
  a 
  little 
  wider 
  than 
  head, 
  much 
  more 
  contracted 
  at 
  

   the 
  extremities 
  than 
  in 
  fig., 
  truncate 
  at 
  base, 
  a 
  trifle 
  emarginate 
  at 
  

   apex, 
  front 
  angles 
  projecting 
  a 
  little, 
  rather 
  sharp, 
  sides 
  sinuate 
  

   before 
  base, 
  hind 
  angles 
  right, 
  side 
  border 
  very 
  fine 
  (apparently 
  

   without 
  setae); 
  surface 
  smooth, 
  rather 
  convex, 
  declivous 
  towards 
  

   front 
  angles, 
  which 
  are 
  near 
  to 
  though 
  they 
  do 
  not 
  touch 
  the 
  neck, 
  

   median 
  line 
  much 
  finer 
  than 
  in 
  fig., 
  not 
  quite 
  reaching 
  margins; 
  

  

  TRANS. 
  ENT. 
  SOC. 
  LOND. 
  1919. 
  — 
  PARTS 
  I, 
  II. 
  (JULY) 
  L 
  

  

  