BROOKS AND RITTENIIOUSE. On Turritopsis. 



PLATE 32. 



The embryology of Turritcpsis. 



Fig. 10-15. Stages in the growth and maturation of the ovarian eggs of 



Turritopsis. 



Fig. 16-18. Stages in the formation of the pole cells. 

 Fig. 19. A fertilized egg. 



Fig. 20. The two-celled stage of segmentation. 

 Fig. 21. The four-celled stage. 

 Fig. 22. The eight-celled stage. 

 Fig. 23. Another view of same. 



