Fig. 9. Embryo on the seventh day after impregnation.
Fig. 10. Embryo on the eleventh day after impregnation (shortly before hatching).
Fig. 11. Head of embryo about the same age as fig. 10, ventral aspect.
Fig. 12. Side view of a larva about 11 millims. in length, shortly after hatching.
Fig. 13. Head of a larva about the same age as fig. 12, ventral aspect.
Fig. 14. Side view of a larva about 15 millims. long, five days after hatching.
Fig. 15. Head of a larva 23 millims. in length.
Fig. 16. Tail of a larva 11 centims. in length.
Fig. 17. Transverse section through the egg-membranes of a just-laid ovum.
We are indebted to Professor W. K. Parker for figs. 12, 14 and 15.