Happon anp SHAcKLETON— Vew Species of Actiniaria. 119 © 
Habitat.—Between Orman’s Reef and “ The Brothers Island,” 
6-7 fms., August 18, 1888; also on fringing-reef, Mabuiag, 
October, 1888. 
The various species of Corynactis are difficult to differentiate 
from each other, so far as the descriptions hitherto published are 
concerned. This species differs from the type species C. viridis, 
Allm., in possessing a well-marked, diffuse, endodermal sphincter 
muscle, as well as in other characters which we will particularize 
in our detailed paper. The specific name is derived from the 
batteries of large nematocysts in the tentacles. 
DISCOSOMIDZE. 
DiscosoMa. 
We place the three following species provisionally under this 
genus, as they appear to constitute a regular series; but we feel 
sure that ultimately the genus will require revision, as the type 
species D. nummiforme, Leuck., appears to differ considerably from 
other species which are commonly associated with it. 
Discosoma Kenti, n. sp. 
Form.— A very large Actinian ; column narrower below than 
above ; oral disc of considerably greater diameter than column, 
and thrown into well-marked lobes; tentacles very numerous, 
subulate, in continuous, rapid, irregular, waving movement ; 
mouth, usually with two gonidial grooves. 
Colowr.—Various; column, usually gray, passing into buff 
above, or brownish and rusty orange above, upper portion with 
pale or sometimes dull violet suckers; tentacles, ashy grey with a 
green tip, or cindery-brown, sometimes the tentacles have a 
pinkish lilac tip. 
Dimensions.—Diameter of corona, over 300 mm. (a foot or 
more. 
Habitat.—On reefs in Torres Straits. 
We have the pleasure of naming this fine species in honour of 
W. Saville Kent, Esq., who has recently done such good scien- 
tific and economic work in connexion with the fisheries of Torres 
Straits and elsewhere round the Australian coasts. 
