﻿310 
  JAMES 
  WATERSTON. 
  

  

  of 
  the 
  latter 
  with 
  16-17 
  spines, 
  longer 
  spur 
  one-fourth 
  the 
  first 
  tarsal 
  joint 
  ; 
  externally 
  

   the 
  coxa 
  is 
  rough 
  (coarsely 
  raised 
  reticulate) 
  on 
  upper 
  half 
  and 
  bears 
  a 
  median 
  longi- 
  

   tudinal 
  row 
  of 
  14-15 
  long 
  bristles 
  ; 
  inner 
  (posterior) 
  surface 
  bristly 
  on 
  apical 
  two- 
  

   thirds 
  ; 
  on 
  the 
  femur, 
  besides 
  a 
  number 
  of 
  dorsal 
  or 
  subdorsal 
  bristles, 
  there 
  are 
  on 
  

   each 
  aspect 
  6-7 
  longer 
  bristles 
  and 
  posteriorly 
  about 
  12 
  near 
  the 
  ventral 
  edge. 
  

  

  Proportions 
  of 
  tarsal 
  joints 
  : 
  — 
  

  

  Tarsal 
  joints 
  . 
  . 
  . 
  . 
  . 
  . 
  i 
  ii 
  iii 
  iv 
  v 
  

  

  Fore-legs 
  26 
  16 
  12 
  8 
  18 
  

  

  Mid 
  and 
  hind-legs 
  .. 
  .. 
  43 
  23-24 
  16 
  10 
  18-20 
  

  

  Abdomen 
  considerably 
  compressed, 
  smooth 
  and 
  shining 
  ; 
  though 
  the 
  tergites, 
  

   where 
  medianly 
  more 
  heavily 
  chitinised 
  and 
  infuscated, 
  have 
  a 
  distinct 
  internal 
  

   structure 
  of 
  hexagonal 
  cells, 
  the 
  superficial 
  gloss 
  is 
  not 
  interfered 
  with 
  ; 
  petiole 
  about 
  

   one-fourth 
  the 
  length 
  of 
  hind 
  coxa. 
  Ovipositor 
  very 
  slightly 
  projecting. 
  Mid-point 
  

   of 
  last 
  sternite 
  apically 
  not 
  reaching 
  half-way 
  between 
  the 
  apex 
  of 
  the 
  petiole 
  and 
  the 
  

   tip 
  of 
  the 
  abdomen. 
  The 
  proportions 
  of 
  the 
  segments 
  vary 
  according 
  to 
  degree 
  of 
  the 
  

   extension 
  of 
  the 
  abdomen. 
  Measured 
  along 
  the 
  mid-line 
  tergite 
  i 
  (iii) 
  is 
  longest, 
  but 
  only 
  

   just 
  exceeding 
  T. 
  iv 
  (vi), 
  which, 
  however, 
  appears 
  to 
  be 
  longest, 
  as 
  it 
  is 
  straight 
  and 
  not 
  

   on 
  the 
  curve 
  ; 
  T. 
  ii 
  (iv) 
  is 
  shortest, 
  hardly 
  exceeding 
  one-third 
  of 
  T. 
  i 
  ;> 
  T. 
  iii 
  (v) 
  is 
  one- 
  

   half 
  longer 
  than 
  T. 
  ii 
  ; 
  T. 
  v 
  (vii) 
  and 
  T. 
  vi 
  (viii) 
  are 
  subequal 
  and 
  about 
  one-third 
  longer 
  

   than 
  T. 
  iii. 
  The 
  spiracles 
  on 
  T. 
  vi 
  are 
  small 
  and 
  practically 
  circular. 
  On 
  each 
  side 
  of 
  

   the 
  mid-line 
  the 
  tergites 
  bear 
  the 
  following 
  short 
  hairs, 
  i 
  and 
  ii, 
  3 
  ; 
  iii, 
  5-6 
  (in 
  a 
  single 
  

   row) 
  ; 
  iv, 
  7-9 
  (two 
  irregular 
  rows) 
  ; 
  v, 
  about 
  20 
  (three 
  rows) 
  ; 
  vi, 
  about 
  30 
  (four 
  rows). 
  

   Ovipositor 
  sheath 
  bare, 
  except 
  for 
  a 
  number 
  of 
  fine 
  short 
  hairs 
  round 
  the 
  apical 
  edge 
  ; 
  

   ovipositor 
  tip 
  (fig. 
  2, 
  /, 
  g) 
  with 
  six 
  completely 
  transverse 
  teeth. 
  Venter 
  weakly 
  

   chitinised, 
  smooth, 
  bare. 
  

  

  Length, 
  6-4-7 
  mm. 
  ; 
  alar 
  expanse, 
  9-10 
  mm. 
  

  

  $. 
  — 
  Similar 
  to 
  the 
  9 
  in 
  colour, 
  but 
  more 
  extensively 
  pale 
  on 
  the 
  head, 
  which 
  is 
  only 
  

   slightly 
  darkened 
  on 
  the 
  mid-occiput, 
  round 
  the 
  ocelli, 
  and 
  narrowly 
  on 
  the 
  subtorular 
  

   keel. 
  Legs 
  entirely 
  pale 
  and 
  clear. 
  

  

  Antennae 
  (fig. 
  1, 
  b) 
  slender, 
  without 
  club, 
  three-fourths 
  the 
  length 
  of 
  the 
  body. 
  

   Proportions 
  : 
  scape, 
  170 
  ; 
  pedicel, 
  60 
  ; 
  ring 
  joint, 
  18 
  ; 
  funicle 
  i 
  and 
  ii, 
  255 
  ; 
  iii, 
  240 
  ; 
  

   iv, 
  220 
  ; 
  v, 
  210 
  ; 
  vi, 
  185 
  ; 
  vii, 
  190 
  ; 
  the 
  breadth 
  of 
  scape 
  in 
  the 
  same 
  scale 
  is 
  50, 
  

   pedicel 
  40, 
  ring 
  joint 
  20, 
  funicle 
  i, 
  34 
  (base), 
  24 
  distally 
  and 
  thereafter 
  about 
  21. 
  

  

  Abdomen 
  : 
  petiole 
  long, 
  equal 
  to 
  the 
  hind 
  coxa 
  and 
  trochanter 
  together, 
  dorsally 
  

   rugulose 
  ; 
  tergites 
  i 
  and 
  vi 
  longest 
  and 
  subequal, 
  nearly 
  twice 
  as 
  long 
  as 
  ii 
  or 
  v, 
  which 
  

   are 
  also 
  subequal 
  ; 
  iii 
  and 
  iv 
  about 
  one-fourth 
  shorter 
  than 
  i. 
  

  

  Length, 
  about 
  5-7 
  mm. 
  ; 
  alar 
  expanse 
  about 
  8 
  mm. 
  

  

  Type 
  $ 
  in 
  British 
  Museum, 
  one 
  of 
  a 
  series 
  of 
  10 
  $, 
  3,^, 
  reared 
  from 
  larvae 
  tunnelling 
  

   in 
  bamboo 
  stem. 
  

  

  Federated 
  Malay 
  States 
  : 
  Kuala 
  Lumpur, 
  ix.1921 
  (G. 
  H. 
  Corbett). 
  

  

  