230 



THE PROTOZOA 



brane, and three of the resulting nuclei are eliminated, while one fuses 

 with the female pronucleus, thus giving a striking analogue of the 



Fig. 127. Formation of microgametes and fertilization of Klossia octopiana Schneid. 



. [SlEDLECKI.] 



The chromatin of the nucleus is distributed throughout the cell (A, B}, finally forming nuclei 

 of the future gametes (C, D, E). The mature microgametes (s) swim about, and join a macro- 

 gamete (f). The nuclei mix (G), and then the cleavage nucleus divides repeatedly by mitosis to 

 form the spores (H). 



polar-body formation in Metazoa, or of the degenerate final divisions of 

 pro-con jugants in the other Protozoa. The formation of both macro- 



