Jii:i,I.. r. S. li. I*., 191;,. 



Pl.ATK X\'II1. 



Fig. 5. — Embryo with 3-4 somites, x 50. 



Fig. 6. — Embryo with 12-14 somites, x 50. 



Fig. 7. — Embryo with about 12 somites, side view, x 50; H, heart. 



Fig. 8. — Embryo with pigmentation started, inclosed in ovarian follicle, x 



