PLATE 8 



EXPLANATION OF FIGURES 



67 to 77 Acridium obscurus Hanc. 



67, 68 Spermatogonia! cells. Sex chromosome faintly stained. Auto- 

 somes black. Chromatoid body (c) not always present. 



69 to 71 Prophase of first spermatocyte. Homologous chromosomes in synap- 

 sis by distal ends only, con., probably a fragment of a chromosome. 



72 to 75 First spermatocytes in division, con., split in figures 72 and 73, 

 possibly attempting to divide. 



294 



