186 



PROTOZOOLOGY 



Fig. 82. Sexual reproduction in Trichonympha of Cryptocercus 

 (Cleveland), a, a female gamete with a fetilization ring and cone; b, a 

 male gamete; c-g, stages in fusion and fertilization; h, a zygote; i, telo- 

 phase of the first meiotic division of the zygote nucleus; j, k, prophase and 

 anaphase of the second meiotic division, a-g, X280;h, X215;i-k, X600. 



