Plate II 



Emilia sinuata {continued} 

 Fig. 31 Second spermatocyte, equatorial plate, 10 chromosomeb. 

 Fig. 32. Second spermatocyte, metaphase. 

 Fig. 33 Second spermatocyte, anaphase. 

 Fig. 34 Second spermatocyte, anaphase, polar view. 

 Fig. 35 Second spermatocyte, telophase. 

 Fig. 36 Spermatid, first stage. 



Figs. 37, 38 Spermatids, second stage, half with x, half without. 

 Figs. 39, 40 Spermatids, third stage, half contain x, half do not. 

 Figs. 41, 42 Spermatids, formation of axial filament, half contain .v, half do not. 

 Figs. 43, 44 Spermatids, condensation of the chromatin, half contain .v, half do net. 

 Figs. 45, 46 Spermatids, later stages. 

 Fig. 47 Mature spermatozoon. 



J'anduzea arcuata {Family Memhracidir) 



Fig. 48 Spermatogonial equatorial plate, 17 chromosomes. 



Figs. 49, 50 First spermatocyte, growth period. 



Fig. 51 First spermatocyte, equatorial plate, 9 chromosomes. 



Fig. 52 First spermatocyte, metaphase. 



Figs. 53-55 First spermatocyte, anaphase. 



Figs. 56, 57 Second spermatocytes, equatorial plates, containing 9 and 8 chromosomes, respectively. 



Fig. 58 Second spermatocyte, metaphase. 



Fig. 59 Second spermatocyte, anaphase. 



Figs. 60, 61 Spermatids, half contain x, half do not. 



