19 C. M. CHILD. 



PLATE X. 



FIG. 10. A, B, Fig. ii; A, B, the spireme stage. Figs. 10, A, and II, B, 

 show the first stages in fusion of the spermatocytes to form a cytophore. 



FIG. 12. A, B, spireme stages. 



FIG. 13. A, preparation for first spermatocytic mitosis; B, preparation for frag- 

 mentation. 



