SEA LILIES, STARFISHES, ETC.—CLARK. 17 
base, separate it from C. pinguis. From the South Australian 
species CO. trichoptera, the size, the cirri and the pinnules all 
distinguish it without difficulty. 
Loc.—Kast of Flinders Island, Bass Strait, 100-300 fathoms. 
Two specimens. 
CoMANTHUS SPANOSCHISTUM,! sp. nov. 
(Plate IV., fig. 3.) 
Disk 5-12 mm. in diameter ; arms 30-80 mm. long. Centro- 
dorsal large and flat, 5 mm. in diameter in adults, and about 
1 mm. thick. Cirri, in one or in two imperfect series, about 
XXIV., 15-20; the longest are 10-15 mm. long ; segments 
4-7 or 3-8 are cylindrical and longer than wide, segment 4 (or 5) 
may be nearly twice as long as thick; distally the segments 
are a trifle compressed and the distal margin dorsally is 
elevated to form a low tubercle, which, at least on the pen- 
ultimate segment, is spiniform. Radials hidden; IBr 1 low 
and wide, more or less in contact ; radial axillary triangular, 
high and pointed, the height about two-thirds of the width. 
IIBr series, not often developed; when present, invariably 
4 (3+4) ; arms usually 10, in one specimen 13, in another 14, 
and in a third 19; No IIIBr series is developed. Brachials 
at first quadrilateral, but soon becoming triangular; distal 
margins becoming more and more flaring and overlapping 
until near tip of arm where the brachials become quadrilateral 
again and the margins hardly flare. Syzygies between 3 and 
4 and then at an interval of 7-11 segments; after that the 
syzygial interval is usually 5, but may be only 3. Pinnules 
long and slender; P, is over 10 mm. long and consists of about 
30 segments, of which about 15 make up the comb; Pz, is 
somewhat smaller and Ps; is only 8 mm. long and consists of 
20 segments, 9 in the comb; P, is 8 mm. long, but has no 
comb ; succeeding pinnules become more slender and increase 
in length to about 10 mm. ; basal segments of lower pinnules, 
more or less triangular with greatly flaring, spinulose margins 
which tend to project like rough spurs on the aboral side of 
the largest segments, much as in the preceding species (C. 
plectrophorum). Disk, except around tip of anal tube, 
smooth and naked; there are calcareous nodules in the anal 
tube. Mouth interradial. Colour, in alcohol and dry, more 
or less yellowish, with either a green or a brown cast; one 
1. gravos=rare+ ox coTos=Adivided, in reference to the scarcity of arm 
divisions. 
