

1914] 



GE TMA N— OOGENESIS IN HORMOSIRA 



271 



3. Harvey, W. H., Phycologia Australica. 3: pi. 135. London, i860. 



4 



J 



London. 1867. 



5. Kutzing, F. T. f Tabulae Phycologicae. 101 pis. 3, 4. Nordhausen. i860. 



6. Mollet, Structure of Hormosira Billardieri. Trans, and Proc. New Zea- 

 land Inst. 13:318-322. pis. 1 j, 14. 1880. 



7. Oltmanns, F., Beitrage zur Kenntniss der Fucaceen. Bibliotheca Bot. 



H'.pl. 75. 1889. 



8. 



■, Morphologie und Biologie der Algen. 1 and 2: J 



9. Simons, Etoile B., Morphological study of Sargassum filipendul 

 Bot. Gaz. 41:161-182. pis. 10, 11. 1906. 



EXPLANATION OF PLATE XX 



Figs. 1-7 are text cuts. All figs, of the plate X480. 



Figs. 8-10. — Free-nucleate condition. 



Figs, ii, 12. — Development of walls. 



Fig. 13. — Blocking out of six eggs; a seventh nucleus showing. 



Fig. 14. — Four eggs and eight nuclei; the four other eggs have degenerated 



Fig. 15. — Four mature eggs. 



