Smithsonian Report, 1917. — Vaughan. 



Plate 21. 



1912, 2 yrs. old 



1911, 1 yr. old 



1911. 1 yr old 



FAVIA FRAGUM 



FAVIA FRAGUM 



1914, 4 yrs. old 



WRITES ASTREOIDES 



Corals Reared from Planulae. 



