﻿122 
  

  

  Fig. 
  3. 
  Part 
  of 
  the 
  side 
  of 
  the 
  sac 
  around 
  wbich 
  is 
  formed 
  

   a 
  layer 
  of 
  leucocytes. 
  ^^/i. 
  h, 
  tiie 
  cast 
  larval 
  skin 
  

   from 
  the 
  foregoing 
  moult. 
  s, 
  1 
  as 
  in 
  fig. 
  1. 
  

  

  Fig. 
  4. 
  Part 
  of 
  the 
  bottom 
  of 
  the 
  sac 
  with 
  surrounding 
  

   leucocytes. 
  ^''^/i. 
  The 
  letters 
  as 
  in 
  fig. 
  1. 
  

  

  Fig. 
  5. 
  Longitudinal 
  section 
  of 
  the 
  bottom 
  of 
  the 
  sac. 
  ^^/i. 
  

   The 
  letters 
  as 
  in 
  fig. 
  1. 
  

  

  Fig. 
  6. 
  Transverse 
  section 
  of 
  a 
  Uyponomeuta-\diXV2i 
  with 
  

   a 
  half-grown 
  Ptychomi/ia-la,YV2i. 
  '^'■^U. 
  The 
  letters 
  

   as 
  in 
  fig. 
  1. 
  oci,. 
  the 
  cuticula 
  of 
  the 
  parasite. 
  

  

  Fig. 
  7. 
  Transverse 
  section 
  of 
  a 
  Hyponomenta-l^xvo, 
  with 
  a 
  

   fullgrown 
  parasite. 
  The 
  letters 
  as 
  in 
  fig. 
  1 
  and 
  6. 
  ^^/i. 
  

  

  Viviania 
  cinerea 
  Fall. 
  

  

  Fig. 
  8. 
  Section 
  through 
  a 
  trachea 
  of 
  Carabus 
  violaceus 
  to 
  

   which 
  a 
  Viviania-\2iXV2i 
  is 
  attached. 
  *^li. 
  h. 
  the 
  cast 
  

   larval 
  skin 
  from 
  the 
  foregoing 
  moult. 
  k. 
  the 
  funnel. 
  

  

  Fig. 
  9. 
  Part 
  of 
  a 
  trachea 
  of 
  Carabus 
  violaceus 
  and 
  the 
  

   basis 
  of 
  the 
  funnel. 
  ^°!i. 
  te. 
  the 
  chitinous 
  layer 
  of 
  

   the 
  trachea; 
  tp. 
  the 
  epithelium 
  of 
  the 
  trachea. 
  

  

  Ocyptera 
  brassicaria 
  F. 
  

   Fig. 
  10. 
  Longitudinal 
  section 
  of 
  the 
  chitinous 
  funnel 
  enclo- 
  

   sing 
  the 
  posterior 
  end 
  of 
  the 
  larva. 
  -^k. 
  k. 
  as 
  in 
  fig. 
  8. 
  

  

  PL 
  IL 
  

  

  Ptychomyia 
  selecta 
  Meig. 
  

   Fig. 
  11. 
  1. 
  stage. 
  Pharyngeal 
  skeleton. 
  -^^/i. 
  p. 
  the 
  platebelow 
  

   tht) 
  skeleton; 
  ns. 
  the 
  lower 
  and 
  os. 
  the 
  

   upper 
  pharyngeal 
  piates; 
  t. 
  the 
  median 
  

   tooth. 
  

  

  - 
  12. 
  - 
  - 
  Posterior 
  spiracles. 
  '-^^^Ii. 
  f. 
  The 
  atrium 
  

  

  (»Filzkammer«). 
  

  

  - 
  13. 
  - 
  - 
  Pharyngeal 
  skeleton. 
  ^^^/i. 
  m. 
  hooks; 
  ns. 
  

  

  øs. 
  as 
  in 
  fig. 
  11. 
  

  

  