FIG. 5. F. Rousseletii. Development of male initial cell. 



A-C, Period of enlargement ; D-F, shifting of the physiological axis of the cell ; G-K, 2-, 4-, 

 8-, 16-, and 32-celled stages, the latter "bowl "-shaped, with phialopore directed obliquely 

 downwards ; L, cell-division complete, phialopore lateral. 



All x about 1000. 



