Happon anp Dursrpen—Some Actiniaria from Australia and other Districts. 159 
BUNODEOPSIS. 
Until the sole representative of the genus Bunodeopsis, &. strumosa, has been 
anatomically investigated, we cannot be quite sure what it is. At all events it is 
probably very closely allied to the genus Cystiactis; and we may certainly adopt 
the opinion of Dr. Andres that it is quite distinct from Alicia ( Cladactis) costa. 
We therefore provisionally retain it among the Aliciide. 
HEXACTINIA. 
ANTHEADE (Hertwig, 1882). 
ACTINIOIDES, Hadd. and Shackl., 1893. 
Antheadze with more or less prominent suckers on upper portion of column ; 
capitular margin with conical acrorhagi. Diffuse or feebly circumscribed endo- 
dermal sphincter muscle. 
We have added the character of the sphincter muscle to the original definition 
of this genus,* and have taken from it the statement that the acrorhagi “are 
provided with a well developed battery of nematocysts,” as, though this 
is characteristic of the type species, A. Dizoniana, we do not find this detail 
sufficiently marked in our new species to warrant its being retained as a generic 
character, 
Actinioides Spenceri, n. sp. 
CEL vie tes U2.) 
Form.—Column rather short and cylindrical with eighteen vertical rows of 
sucker-like verrucse, of which the distal are the largest, and they gradually 
diminish inferiorly ; capitulum with eighteen acrorhagi; tentacles short, blunt, in 
two cycles of eighteen in each cycle, the inner cycle being about one-half of the 
diameter of the disc in length, and about half as long again as the outer row. 
Oral dise of not much greater diameter than the column. Basal dise of not 
greater diameter than column. 
Colour—Column dull reddish-orange; the capitulum dark purplish-brown, 
which colour extends slightly down the lines of the verrucz and shades off into 
the orange of the rest of the column; verruce white with a dark central spot; 
large inner tentacles orange with brown transverse bands (on their oral aspect); 
* Proc. Roy. Dub. Soc., vu. (N.S.), 1898, p. 126. 
