A, E. Verrili— The Bermuda Islands; Coral Reefs. 277 
Rhodactis osculifera MeMurrich, Revision, Bull. Mus. Turin, xx, p. 18, 1905 
(non Les. sp.). 
This curious species is common on the reefs, often living exposed 
to the surf, as well as in sheltered spots. It often grows in large 
groups or colonies, nearly covering the rock for a considerable area, 
121 
Figure 121.—<Actinotryx sancti-thome. A small specimen fully expanded. 
Phot. from life, nat. size. The irregular patches on the column are due to 
loosely adherent mucus. Phot. A. H. V. 
Figure 122.—The same, a larger specimen, not so fully expanded, # nat. size. 
From colored drawing by A. H. V. 
those in each colony being of nearly one pattern of color, due, 
without doubt, to the fact that this actinian can produce young 
asexually, both by direct fission and by fragmentation of the edges 
Figure 123.—Actinotryx sancti-thome ; a, Giagram of mouth and disk-tuber- 
cles, x2; b, group of marginal tentacles, more enlarged. Sketches from 
life by the author. 
of the lobulated basal disk. Therefore a concolorous group indi- 
cates that all in such a group are of one parentage. But there is 
great diversity in the members of different groups. 
