﻿SPERMATOGENESIS 
  OF 
  PERIPLANETA 
  AMERICANA. 
  583 
  

  

  Fig. 
  30. 
  — 
  Spennatid. 
  Nucleolus 
  lying 
  in 
  contact 
  with 
  nuclear 
  membrane 
  

   prior 
  to 
  fission. 
  

  

  Fig. 
  31. 
  — 
  Spermatid. 
  Nucleolus 
  divided. 
  

  

  Fig. 
  32. 
  — 
  Spermatid. 
  Nucleolus 
  divided. 
  Halves 
  separating. 
  

  

  Fig. 
  33. 
  — 
  Spermatid. 
  Nucleolus 
  divided. 
  The 
  extra-nuclear 
  portion 
  has 
  

   just 
  been 
  extruded; 
  intra-uuclear 
  portion 
  degenerating 
  within 
  the 
  nucleus. 
  

  

  Fig. 
  34. 
  — 
  Spermatid. 
  Nucleolus 
  divided. 
  The 
  extra-nuclear 
  portion 
  has 
  

   undergone 
  fragmentation 
  in 
  the 
  cytoplasm. 
  The 
  intra-nuclear 
  portion 
  has 
  

   become 
  almost 
  invisible. 
  

  

  Fig. 
  35. 
  — 
  Spermatid. 
  Extra-nuclear 
  chromatic 
  body 
  well 
  defined. 
  The 
  

   intra-nuclear 
  portion 
  has 
  vanished. 
  

  

  Fig. 
  36. 
  — 
  Spermatid. 
  Showing 
  extra-nuclear 
  chromatic 
  body 
  in 
  two 
  

   fragments. 
  

  

  