Smithsonian Report, 1917. — Vaughan. 



Plate 21. 



1912, 2 yrs. old 



1911, 1 yr. old 



FAVIA FRAGUM 



1914, 4 yrs. old 



FAVIA FRAGUM 



1914, 4 yrs. old 



PORITES ASTREOIDES 



1914, 4 yrs. old 



Corals Reared from Planulae. 



