518 



PROTOZOOLOGY 



cells (/). A binucleate sporocyte is formed from the latter by unequal 

 nuclear division ig-i) and 2 sporocytes unite to form a tetranucleate 

 pansporoblast ij) which develops into 2 spores (A;, I). Sporoplasm 

 shows first 2 nuclei, but later 4, of which 2 degenerate and the other 2 

 fuse into one nucleus. On the other hand, according to Naville (1930) 



Fig. 244. The development of Sphaeromyxa sabrazesi (Debaisieux). 

 a, vegetative nuclei; b, association of two vegetative nuclei; c, the same 

 within a cell; d, primary propagative cell; e, its division; f, secondary 

 propagative cells; g, their division; h, formation of sporocyte; i, two 

 sporocytes; j, formation of pansporoblast; k, pansporoblast at later stages; 

 1, pansporoblast with two spores, the sporoplasm of which contains two 

 nuclei; m, four nuclei in sporoplasm; n, two nuclei remain functional, the 

 other two degenerate, o, fusion of the two nuclei. 



