﻿332 
  

  

  JAMES 
  WATERSTON. 
  

  

  Thorax 
  considerably 
  depressed, 
  coloured 
  like 
  occiput, 
  but 
  bluer 
  at 
  the 
  sides. 
  Mid- 
  

   lobe 
  of 
  mesonotum 
  and 
  the 
  scutellum 
  broad. 
  The 
  parapsides 
  and 
  axillae 
  narrower 
  

   than 
  usual 
  ; 
  the 
  axillae 
  wide 
  apart 
  and 
  only 
  a 
  little 
  entering 
  the 
  parapsides. 
  

   Entire 
  tegument 
  of 
  thorax 
  heavily 
  chitinised 
  and 
  so 
  densely 
  reticulate 
  as 
  to 
  appear 
  

   punctate, 
  except 
  under 
  a 
  high 
  power. 
  The 
  usual 
  pair 
  of 
  Entedonine 
  bristles 
  on 
  the 
  

   scutellum 
  ; 
  tip 
  of 
  scutellum 
  narrowly 
  shining. 
  Mesophragma 
  short, 
  descending 
  

   almost 
  vertically 
  and 
  not 
  directed 
  backwards 
  ; 
  mesoprepectus 
  very 
  large 
  ; 
  the 
  

   pleurae 
  coarsely 
  reticulate. 
  Metathorax 
  and 
  propodaeum 
  narrow, 
  together 
  only 
  

   half 
  as 
  long 
  as 
  broad, 
  the 
  former 
  almost 
  linear 
  ; 
  no 
  postero-lateral 
  horns 
  or 
  

   processes 
  to 
  propodaeum. 
  Notal 
  surface 
  coarsely 
  reticulate 
  at 
  sides, 
  with 
  lateral 
  

   folds, 
  but 
  no 
  median 
  carinae 
  present. 
  Propodaeum 
  deeply 
  incised 
  (up 
  to 
  half) 
  

   for 
  the 
  reception 
  of 
  the 
  first 
  abdominal 
  segment. 
  Spiracle 
  narrow, 
  oval, 
  small, 
  

   opening 
  at 
  the 
  outer 
  anterior 
  angle 
  of 
  the 
  lateral 
  fold. 
  

  

  Abdomen 
  rounded, 
  oval. 
  Segments 
  subequal 
  ; 
  on 
  each 
  there 
  is 
  a 
  posterior 
  row 
  

   of 
  bristles 
  — 
  medianly 
  incomplete 
  on 
  segments 
  1 
  to 
  3 
  — 
  with 
  one 
  or 
  two 
  others 
  in 
  

   front 
  at 
  the 
  sides. 
  Surface 
  of 
  abdomen 
  slightly 
  reticulate 
  medianly 
  from 
  seg. 
  3 
  

   to 
  seg. 
  5. 
  The 
  saw 
  bears 
  terminally 
  about 
  half-a-dozen 
  teeth 
  and 
  the 
  free 
  portion 
  

   of 
  the 
  sheath 
  is 
  one-sixth 
  of 
  the 
  whole. 
  Metathorax, 
  propodaeum 
  and 
  abdomen 
  

   dark 
  violaceous 
  or 
  purple, 
  with 
  lighter 
  reflections 
  on 
  the 
  disc 
  of 
  the 
  abdomen. 
  

  

  Wings 
  : 
  Fore 
  wing 
  (fig. 
  3, 
  d) 
  with 
  the 
  marginal 
  longer 
  than 
  the 
  submarginal 
  

   (2:1) 
  ; 
  post-marginal 
  and 
  radius 
  subequal. 
  Whole 
  wing 
  broadened 
  apically 
  ; 
  

   length 
  to 
  breadth, 
  2:1. 
  Bristles 
  on 
  marginal 
  veins 
  strong, 
  from 
  the 
  post-marginal 
  

   to 
  the 
  lower 
  angle 
  the 
  fringe 
  is 
  long. 
  Kadial 
  vein 
  thick 
  and 
  spatulate, 
  with 
  four 
  

   cells 
  rising 
  near 
  the 
  middle. 
  The 
  surface 
  of 
  the 
  wing 
  is 
  covered 
  with 
  hairs 
  of 
  

   unequal 
  calibre 
  (fig. 
  3, 
  e-h) 
  ; 
  next 
  the 
  distal 
  edge 
  is 
  a 
  band 
  3-6 
  rows 
  deep 
  of 
  

   thicker, 
  short 
  bristles, 
  almost 
  black 
  in 
  colour 
  ; 
  a 
  similar 
  belt, 
  half 
  as 
  broad 
  again, 
  

   stretches 
  across 
  the 
  wing 
  at 
  the 
  end 
  of 
  the 
  marginal 
  vein, 
  and 
  another, 
  less 
  definite, 
  

   nearer 
  the 
  base 
  of 
  the 
  wing 
  ; 
  between 
  these 
  belts 
  there 
  are 
  weak 
  hyaline 
  hairs 
  ; 
  

   the 
  clear 
  band 
  parallel 
  to 
  the 
  hind 
  margin 
  is 
  somewhat 
  broad. 
  All 
  the 
  veins 
  dark 
  ; 
  

   a 
  small 
  dark 
  patch 
  below 
  the 
  end 
  of 
  the 
  marginal 
  vein 
  ; 
  the 
  wing 
  also 
  is 
  dark 
  

   wherever 
  the 
  heavier 
  bristles 
  are 
  disposed, 
  and 
  hence 
  its 
  characteristically 
  banded 
  

   appearance. 
  Length, 
  *9 
  mm. 
  ; 
  breadth, 
  -45 
  mm. 
  Hind 
  wings 
  hyaline, 
  unclouded, 
  

   with 
  long 
  fringe. 
  Length, 
  -75 
  mm. 
  ; 
  breadth, 
  -2 
  mm. 
  

  

  Legs 
  with 
  all 
  coxae 
  and 
  femora, 
  hind 
  trochanter, 
  hind 
  tibia 
  and 
  first 
  hind 
  tarsal 
  

   joint 
  black 
  ; 
  fore 
  and 
  mid 
  trochanters 
  smoky 
  ; 
  fore 
  and 
  mid 
  tibiae, 
  with 
  their 
  tarsi, 
  

   and 
  last 
  three 
  hind 
  tarsal 
  joints 
  (fig. 
  3, 
  i) 
  pale, 
  the 
  fore 
  tibiae 
  being 
  a 
  little 
  smoky, 
  

   especially 
  near 
  the 
  base. 
  The 
  proportions 
  of 
  the 
  tarsal 
  joints 
  are 
  remarkable, 
  being 
  

   practically 
  the 
  same 
  in 
  all 
  the 
  legs, 
  both 
  absolutely 
  and 
  relatively. 
  

  

  Proportions 
  of 
  Tarsal 
  Joints. 
  

  

  

  i. 
  

  

  1 
  *• 
  

  

  iii. 
  

  

  iv. 
  

  

  Fore 
  

  

  13 
  

  

  14 
  

  

  14 
  

  

  38 
  

  

  Mid 
  

  

  15 
  

  

  15 
  

  

  15 
  

  

  40 
  

  

  Hind 
  

  

  14 
  

  

  15 
  

  

  16 
  

  

  40 
  

  

  