﻿172 
  

  

  BRUCE 
  F. 
  CUMMINGS. 
  

  

  meta 
  sternite 
  crowded 
  with 
  hairs 
  of 
  medium 
  length. 
  Abdomen 
  : 
  Chaetotaxy 
  a 
  little 
  

   uncertain 
  owing 
  to 
  lack 
  of 
  material. 
  Tergites 
  with 
  a 
  few 
  minute 
  hairs 
  on 
  the 
  posterior 
  

   margin 
  ; 
  these 
  are 
  longer 
  on 
  segments 
  6, 
  7 
  and 
  8. 
  Pleurae 
  of 
  segment 
  1 
  with 
  a 
  bunch 
  of 
  

   small 
  spiny 
  hairs 
  on 
  the 
  ventral 
  surface 
  ; 
  those 
  of 
  the 
  other 
  pleurae 
  with 
  smaller 
  and 
  

   fewer 
  spines 
  in 
  the 
  same 
  position. 
  Pleurite 
  of 
  segment 
  2 
  with 
  two 
  long 
  hairs, 
  one 
  

   very 
  much 
  longer 
  than 
  the 
  other. 
  Pleurites 
  of 
  segments 
  3, 
  4 
  and 
  5 
  with 
  only 
  minute 
  

   spines, 
  of 
  segments 
  6, 
  7, 
  8 
  and 
  9 
  with 
  two 
  very 
  elongate 
  hairs. 
  On 
  the 
  sternite 
  of 
  

   segment 
  1 
  in 
  each 
  anterior 
  outside 
  corner 
  two 
  straight 
  bristles 
  directed 
  forwards. 
  

   Sternites 
  3, 
  4, 
  5, 
  6 
  and 
  7 
  with 
  a 
  patch 
  of 
  small 
  hairs 
  on 
  each 
  side. 
  Sternite 
  8 
  with 
  

   a 
  number 
  of 
  minute 
  scattered 
  hairs 
  over 
  its 
  broad 
  surface. 
  Sternite 
  9 
  with 
  a 
  trans- 
  

   verse 
  row 
  of 
  rather 
  small 
  hairs. 
  

  

  Mouth-parts. 
  — 
  Mandibles 
  : 
  Inner 
  condyle 
  well 
  developed, 
  in 
  the 
  form 
  of 
  a 
  rounded 
  

   knob 
  (fig. 
  7, 
  a). 
  Maxillary 
  palpus 
  (fig. 
  7, 
  6) 
  : 
  This 
  appendage 
  curves 
  outwards 
  

   laterally 
  from 
  the 
  mouth-parts 
  to 
  the 
  side 
  of 
  the 
  head, 
  beyond 
  which 
  it 
  projects 
  

   slightly. 
  This 
  position 
  is 
  brought 
  about 
  by 
  the 
  form 
  of 
  the 
  two 
  basal 
  segments. 
  

   Isopogometric 
  apparatus 
  : 
  Anterior 
  cornua 
  of 
  oesophageal 
  sclerite 
  with 
  truncate 
  tips. 
  

   Two 
  posterior 
  projections 
  present. 
  The 
  plate 
  carries 
  a 
  fringe 
  of 
  delicate 
  teeth. 
  The 
  

   basal 
  pieces 
  are 
  parallel-sided, 
  truncate 
  in 
  front 
  and 
  behind. 
  

  

  Measurements 
  of 
  Menopon 
  robsoni, 
  $, 
  in 
  ' 
  

  

  millimetres. 
  

  

  

  Head 
  .... 
  

  

  Prothorax 
  . 
  . 
  

  

  Best 
  of 
  Thorax 
  

  

  Abdomen 
  

  

  Length. 
  

  

  •31 
  

   •21 
  

   •52 
  

   •75 
  or 
  -65* 
  

  

  Breadth. 
  

  

  •56 
  

   •38 
  

  

  •7 
  

   •64 
  

  

  Total 
  

  

  1-79 
  or 
  1-69 
  

  

  2-28 
  

  

  Length 
  of 
  legs. 
  

  

  Femur 
  

  

  Tibia 
  

  

  Tarsus 
  + 
  claw 
  

  

  1st 
  

  

  •]83 
  

   •166 
  

   •106 
  

  

  2nd 
  

  

  •21 
  

   •22 
  

   •14 
  

  

  3rd 
  

  

  •25 
  

   •24 
  

   •14 
  

  

  Total 
  

  

  •455 
  

  

  •57 
  

  

  •63 
  

  

  Length 
  of 
  Segments 
  of 
  Antenna 
  and 
  Palpns 
  

   of 
  the 
  1st 
  Maxilla. 
  

  

  1 
  

   2 
  

   3 
  

   4 
  

  

  Antenna. 
  

  

  •018 
  

   •004 
  

   •030 
  

   •048 
  

  

  Palpus. 
  

   [ 
  118 
  

  

  Total 
  

  

  •1 
  

  

  118 
  

  

  * 
  According 
  as 
  one 
  reckons 
  from 
  the 
  real 
  base 
  of 
  the 
  first 
  segment 
  or 
  from 
  the 
  edge 
  of 
  

   the 
  meta-thoracic 
  overlap. 
  

  

  