Fig. 145. Diagrammatic life cycle of Sphaeromyxa sabrazesi, 1, mononuclear zygote 

 (sporozoite) ; 2, multinuclear plasmodium (schizogony), large outline represents Plas- 

 modium during subsequent development; 3-6, 17-19, multiplication of diploid nuclei; 

 7, 20, differentiation of nuclei into large and small; 11-12, 21-23, reduction division 

 in macro- and microgametocytes ; 14-15, 25-26, equational division; 16, macrogamete; 

 29, microgamete; 30, plastogamy; 31, pansporoblast; 32-37, mitoses of haploid nuclei 

 to form fourteen; 38, two sporoblasts formed; 39, two pronuclei remaining in each 

 spore; 40, fertilzation within spore. (After Naville, 1930b.) 



