SEA LILIES, STARFISHES, ETC.—CLARK. 3) 
fathoms nor those known from Sahul Bank (south of Timor) ; 
of the sixty-six, thirty-seven, or more than half, are known 
only from Australia. 
Family PENTACRINITID. 
Genus Metacrinus, P. H. Carpenter. 
METACRINUS CYANEUS,! sp. nov. 
(Plate I.) 
Stem rather stout, apparently not exceeding 400-500 mm. 
in length, and ranging from 5 to 8 mm. in diameter in the 
different specimens ; pentagonal in cross section, with slightly 
rounded angles; immediately beneath the calyx, the sides 
are grooved and the angles sharp, but after five or six nodes, 
the grooves and angles have virtually disappeared. Cirrus 
sockets confined to the nodals, transversely oblong, the 
shorter diameter markedly less than the height of the nodal, 
one-fourth of which lies below the sockets. Nodals not at 
all produced at angles, nor otherwise conspicuous, but 
occasionally a low swelling is indicated on the rounded angle. 
Internodals 7-15, but rarely fewer than 9; the uppermost 
becomes fused with the nodal on the lower half of the stem ; 
the upper and lower margins are prettily crenulated along 
the suture, except on the lowest internodes; their radial 
faces are plane (except on uppermost internodes) while the 
internodal angles may bear low, rounded swellings (scarcely 
large enough to be called tubercles), though these are often 
entirely wanting ; the internodals in some specimens are of 
nearly uniform height, but generally alternate internodals are 
higher than those between; this difference may be very 
marked, especially on the uppermost internodes ; along the 
midradial line of the upper internodes, there is a conspicuous 
pit between each pair of stem-segments (nodals and inter- 
nodals alike), but this vertical series of pits becomes indis- 
tinct at about the ninth or tenth internode and lower down 
completely disappears ; the lower internodes have a smooth, 
shining, porcelain-like surface, but the upper ones lack this 
entirely. 
Cirri 50-65 mm. in length (eight to ten times the stem- 
diameter), the longest with 60-64 segments ; basal segments 
low (not half as high as wide), gradually becoming higher, but 
never becoming even approximately as high as wide ; terminal 
‘claw scarcely longer than the preceding joint, slightly curved : 
1. Kvaveos=dark blue, dusky, in reference to the colour of the stem. 
