Brooks and Rittenhouse.— On Turritopsis. 
PLATE 32. 
The embryology of Turritopsis. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
10-15. Stages in the growth and maturation of the ovarian eggs of 
Turritopsis. 
16-18. Stages in the formation of the pole cells. 
19. A fertilized egg. 
20. The two-celled stage of segmentation. 
21. The four-celled stage. 
22. The eight-celled stage. 
23. Another view of same. 
