﻿PLATE 
  XVI. 
  

  

  (Natural 
  sizes 
  indicated 
  in 
  hair-line.) 
  

  

  Fig. 
  1. 
  Larva 
  of 
  Systcochus 
  oreas, 
  from 
  the 
  side 
  ; 
  1 
  b, 
  head 
  from 
  side, 
  still 
  further 
  en- 
  

   larged 
  ; 
  1 
  c, 
  same, 
  from 
  front 
  ; 
  1 
  d, 
  left 
  maxilla 
  ; 
  1 
  e, 
  left 
  mandible 
  ; 
  If, 
  meso- 
  

   thoracic 
  spiracle 
  ; 
  1 
  g, 
  pre-anal 
  spiracle. 
  

  

  2. 
  Pupa 
  of 
  Systoschus 
  oreas, 
  ventral 
  view 
  ; 
  2 
  a, 
  same, 
  side 
  view 
  : 
  2 
  b, 
  dorsal 
  part 
  

  

  of 
  anal 
  end 
  ; 
  2 
  c, 
  prothoracic 
  spiracle; 
  2 
  d, 
  form 
  of 
  dorsal 
  horny 
  plates 
  and 
  

   spines 
  on 
  the 
  abdomen. 
  

  

  3. 
  Systoechus 
  oreas, 
  $ 
  ; 
  3 
  a, 
  head 
  of 
  same 
  from 
  side 
  ; 
  3 
  b, 
  antenna 
  of 
  same 
  from 
  

  

  above 
  ; 
  3 
  c, 
  antenna 
  of 
  same 
  from 
  side 
  ; 
  3 
  d, 
  mouth 
  parts 
  separated. 
  

  

  4. 
  Larva 
  of 
  Triodites 
  mus 
  as 
  it 
  appears 
  when 
  contracted 
  prior 
  to 
  pupation 
  ; 
  4 
  a, 
  

  

  head 
  from 
  side 
  ; 
  4 
  b, 
  left 
  maxilla 
  ; 
  4 
  c, 
  left 
  mandible. 
  

  

  5. 
  Pupa 
  of 
  Triodites 
  mus, 
  ventral 
  view; 
  5 
  a, 
  same, 
  side 
  view; 
  5 
  6, 
  dorsal 
  view 
  of 
  

  

  anal 
  parts 
  ; 
  5 
  c, 
  form 
  of 
  dorsal 
  plates 
  and 
  spines 
  on 
  abdomen. 
  

  

  6. 
  Triodites 
  mus, 
  $ 
  ; 
  15 
  a, 
  her 
  head, 
  front 
  view 
  ; 
  6 
  b, 
  her 
  right 
  antenna 
  from 
  above 
  ; 
  

  

  6 
  c, 
  right 
  antenna 
  from 
  side. 
  

  

  7. 
  Triodites 
  mus, 
  $ 
  ; 
  7 
  a, 
  his 
  head, 
  front 
  view. 
  

  

  