422 Happon—The Actiniaria of Torres Straits. 
Anemonia Kwoiam, H. & S. 
(Pl. XXII, fig. 5; Pl. XXVI., figs. 8-11.) 
Anemonia Kwoiam, Hadd. and Shackl., 1893; Proc. R. D.S. vu, p. 125. 
Form.—Body, salver shaped, smooth; upper portion of column without 
suckers, when fully expanded extends beyond the insertion of the tentacles, and 
forms a distinct crenulated rim ; disk of much greater diameter than column, with 
a wavy margin; mouth round, no gonidial grooves; tentacles in multiples of 
SIX. 
Colour.—Column, buff; disk, burnt sienna brown, with several white radial 
lines near the mouth corresponding to the primary radii; remainder of disk 
blotched with white, especially peripherally ; tentacles brown, speckled with 
white proximally. 
Dimensions.—Corona, 155 mm. (about 6 in.), when fully expanded; tentacles, 
22mm. long. 
Habitat.—Surface of reef, Mabuiag (Jervis Island). 
Longitudinal sections of the column show that the ectoderm is thrown into 
numerous folds, and here the mesogloea is also thicker, and the plaits of the 
endodermal muscle are much more evident (Pl. xxvi., fig. 11), The uppermost 
portion of the body-wall is thin and regular, and in vertical sections (Pl. xxv1., fig. 8) 
forms a vesicular bulging; this is the crenulated rim referred to in the diagnosis 
of the species. At the oral origin of this loop, and immediately opposite the spot 
where the folded body-wall becomes smooth, is the diffuse sphincter. 
The endodermal sphincter is so feeble as to be quite insignificant. It consists 
(Pl. xxv1., figs. 8, 9, 10) of two or three small plaits of the mesogloea which are 
simple or with one or two branches. 
There are from 50 to 60 pairs of mesenteries of various sizes, most of which 
are gonophoric. The retractor muscle is strong and consists of very numerous plaits 
which are long, fine, and but slightly branched. There is no pennon muscle. 
CONDYLACTIS, Duch. et Mich., 1866; M°M., 1889, p. 18. 
Cereactis, Andr., 1884; Carlgr. 1893, p. 49. 
Actiniidz, with the column smooth or slightly verrucose towards the upper 
part; capitular margin elevated slightly, so as to form a collar or parapet not 
provided with acrorhagi. 
M*Murrich has proved that the type species of this genus, Condylactis passiflora, 
