SEA LILIES, STARFISHES, ETC.—CLARK. 101 
longitudinally ; neck smooth, shining, porcelain-like ; as the 
spine gets older, the smooth, shining neck comes to occupy 
more and more of the spine, so that in old spines only the 
distal half or two-thirds shows the crowded granules clearly ; 
actinal primaries, smooth, flattened, not at all serrulate, with 
very broad collars; secondaries, narrow, flat and blunt. 
Pedicellarie much as in Cidaris affinis, Phil.; large globi- 
ferous pedicellariz very infrequent, wanting in some speci- 
mens ; tridentate pedicellariz rather numerous ; small globi- 
ferous somewhat less so. General colour of test yellowish- 
brown or dull reddish ; secondary spines whitish or yellowish, 
the larger ones about the primaries with a longitudinal stripe 
on the outer side, of brownish, greenish or yellowish tint ; 
this stripe may be very faint and is often wanting, but is 
probably characteristic of the living animal ; secondaries often 
tipped with yellowish or reddish ; primary spines pure white 
(more or less soiled and encrusted distally) with yellow-brown 
collar; in the smallest specimen many of the primaries are 
encircled by two narrow, widely separated, rather faint rings 
of dull rose-red. The smallest specimen is 25 mm. in diameter, 
the largest 45 mm. ; the latter is 33mm. high. Five speci- 
mens. 
At first glance these specimens look very much like Cidaris 
cidaris of Europe or C. abyssicola of Florida, but on more 
careful examination the relationship to C. ajfinis becomes 
more evident. [am no longer willing to separate affinis from 
cidaris generically, for in large series of specimens it is difficult 
to separate them even specifically. I have therefore aban- 
doned the genus 7'retocidaris in the sense in which I formerly 
used it, and I am the more ready to do this because I think 
the “‘ splitting” of genera has been already carried too far 
in the Cidaridz, and we need now to do a little consolidating 
and redefining. 
The occurrence of the present species off South-eastern 
Australia is very interesting, for no nearly related species has 
been taken by the “ Challenger,” “ Siboga,” “* Valdivia ” or 
‘“‘ Albatross’ in their various collections in the Indian and 
Pacific Oceans. The “Challenger” species, C. bracteata, 
recently found off Western Australia, is as near an ally as any, 
but the difference in the primary spines is very marked. 
Indeed, the crowded condition of the granules on the primaries 
of C. conferta, and the lack or faint indication of longitudinal 
series in their arrangement, readily distinguish the present 
species from any cidarid with which I have compared it. 
Locs.—Kastern Slope, Bass Strait, 80-200 fathoms. 
South of Gabo Island, Victoria, about 200 fathoms. 
