Fig. 81. Sexual reproduction in Trichonympha of Cryptocercus 

 (Cleveland), a, vegetative individual; b, gametocyte in early stage of 

 encystment; c, anterior end of the same organism (chromosomes have 

 been duplicated, nuclear sleeve is opening at seams and granules are 

 flowing into the cytoplasm); d, further separation of the male and fe- 

 male chromosomes; e, the nuclear division has been completed, few old 

 flagella remain and new post rostral flagella are growing; f, the cytoplas- 

 mic division has begun at the anterior end; g, the gametes just before ex- 

 cystment, the female showing the developing ring of fertilization granules; 

 h, a female gamete; i, a female gamete with a fertilization ring, a, X350; 

 b, X320; c, X600; d-i, X280. 



