126 Scientific Proceedings, Royal Dublin Society. 
Habitat.—Surface of reef, Mabuiag (Jervis Island). 
We have identified this species with the name of Kwoiam, a 
renowned legendary hero of Mabuiag. 
ACTINIOIDES,, n. g. 
Actiniidee (Antheadee), with more or less prominent suckers on 
upper portion of column ; capitular margin, with conical acrorhagi, 
which are provided with a well-developed battery of nematocysts. 
This new genus bears pretty much the same relation to the 
genus Actinia that Condylactis does to Anemonia (Anthea). 
Actinioides Dixoniana, nt. sp. 
Form.—Column, covered with vertical rows of sucker-like 
verruce ; capitular margin provided with large conical acrorhagi ; 
tentacles in two cycles, not in multiples of six. 
Colour.—Column, various shades of greenish grays and browns ; ; 
disc, dark greenish brown, with white markings; tentacles, olive- 
brown, banded with greenish white or gray on oral aspect. 
Dimensions. —Diameter of corona of largest specimen, 31 mm. 
Habitat.—F¥ ringing reef, Mabuiag. 
We have carefully studied the anatomy of this form, and find 
that the irregularities in the arrangement of its mesenteries recall 
those which were studied by the brothers G. Y. and A. F. Dixon 
in Bunodes thallia, Gosse (cf. Proc. Roy. Dubl. Soc., N. 8. VL., 
1889, p. 810.) We give ourselves the pleasure of dedicating this 
species to these investigators. 
Actinioides Sesere, n, sp. 
Form.—Column, smooth, with about 24 vertical rows of 
verruce, which are small below, in the upper portion of the 
column these are larger, and somewhat irregular in their arrange- 
ment; capitulum, provided with well-defined, conical acrorhagi; 
disc, flat; mouth, round, raised on small cone, with no gonidial 
grooves. 
Colowr.—Column, various shades of brown and gray ; verruce, 
bright green; acrorhagi, light green, with dark spots; tentacles, 
brownish white, sometimes with green sheen. 
