64 GERM-CELL CYCLE IN ANIMALS 
Fic. 22.— Miastor americana. Frontal section through posterior end 
of embryo showing oégonia (093) forming two rows of four each. 
Fig. 23.— Miastor americana. Ovary containing sixteen odgonia (0694), 
one dividing by mitosis (a). m = mesoderm. 
Fic. 24.— Miastor americana. Ovary containing thirty-two odgonia 
(0695). m = mesoderm. 
Fic. 25.— Miastor americana. Young odcyte (oéc) with nurse cells 
(n.c). 
