﻿EXPLANATION 
  OF 
  PLATES 
  V-IX, 
  

  

  Monophlebus 
  stebbingi, 
  var. 
  octocaudata, 
  Green. 
  

  

  Fig. 
  1. 
  Diagrammatic 
  representation 
  of 
  tracheal 
  system, 
  

   viewed 
  from 
  dorsal 
  surface 
  ; 
  legs 
  removed. 
  

  

  2. 
  Lateral 
  view 
  of 
  insect 
  to 
  show 
  position 
  of 
  spiracles. 
  

  

  3. 
  Thoracic 
  spiracle 
  ; 
  seen 
  from 
  ventral 
  surface. 
  

  

  4. 
  „ 
  ,, 
  plan 
  (lateral 
  view 
  of 
  insect). 
  

   5-12. 
  Longitudinal 
  sections 
  of 
  thoracic 
  spiracles. 
  

  

  13-20. 
  Transverse 
  

  

  21. 
  Diagram 
  to 
  show 
  direction 
  of 
  sections 
  13-20. 
  

   22-23. 
  Longitudinal 
  sections 
  of 
  abdominal 
  spiracles. 
  

   24-30. 
  Transverse 
  „ 
  „ 
  „ 
  

  

  A. 
  Ventral 
  jaw. 
  

  

  B. 
  Dorsal 
  jaw. 
  

  

  Ci. 
  Kim 
  of 
  spiracle. 
  

   C2. 
  Muscle 
  plate. 
  

  

  D. 
  Collar 
  chamber. 
  

  

  E. 
  Processes 
  of 
  dorsal 
  jaw. 
  

  

  F. 
  Tracheal 
  cavity. 
  

  

  G. 
  Muscular 
  tissue 
  of 
  abdominal 
  spiracle. 
  

  

  H. 
  Spiral 
  wall 
  of 
  collar 
  chamber 
  of 
  abdominal 
  spiracle. 
  

  

  J. 
  Teeth 
  of 
  abdominal 
  spiracle. 
  

  

  K. 
  Collar 
  chamber 
  of 
  abdominal 
  spiracle. 
  

  

  M. 
  Muscles 
  of 
  closing 
  apparatus. 
  

  

  T. 
  Trachea. 
  

  

  