SEA LILIES, STARFISHES, ETC.—CLARK. 25 
conical ; cirrus-sockets in ten vertical series of 3 or 4 each 
(about 35 altogether), the series separated radially by a rather 
broad area, with finely roughened surface. Cirri 45 to 50 mm. 
long, with 68-74 segments, of which the fifth or sixth is longest 
(much longer than thick) and all but the basal fifteen have the 
distal dorsal margin produced into what looks like a sharp 
spine, when seen from the side; distal segments, including 
this dorsal spine twice as wide as high. 
Radials completely concealed except for the small disto- 
lateral corner which appears in the interradial angles of the 
calyx. IBrl crescentic, the proximal margin strongly 
convex, the distal correspondingly concave ; excepting only 
the distal median portion, the whole surface is rough and 
spinulose, especially the lateral margins. IBr2 (axillary), 
rhomboidal with anterior margins, slightly concave; all 
margins finely serrulate and lateral surfaces rough and 
spinulose ; synarthrial tubercle of 1 and 2, smooth and 
rounded, low but distinct. IIBr series, 2, very similar to 
the [Br series, but the lateral spinulose surfaces are much 
less marked, especially on the axillary and are nearly wanting 
on the inner side. First two brachials are similar but are 
relatively much longer and narrower and have no spinulose 
lateral areas, though the lateral margins are very serrulate 
and rough. The division series and these two brachials have 
strongly flattened sides; the division series are in closely 
appressed contact, but the lower brachials are much less so, 
and probably in life hardly touch. Brachials 3-10 quadri- 
lateral, but subsequent segments become triangular, the 
distolateral angle being more and more prominent ; beyond 
the middle of the arm the segments become quadrilateral again 
and nearly as long as wide; proximally both proximal and 
distal margins are everted and rough, but beyond the 12-14 
joint only the distal margin is conspicuous ; even near the tip 
of the arm, however, the distal margin is not very flaring and 
it never overlaps the following segment. Beginning at the 
35th, or thereabouts, the distal dorsal surface of each segment 
is rough with minute spines and these soon cover the whole 
median area of the arm; near the tip, this area is a very 
narrow band. 
P, about 11 mm. long, of 25 smooth segments, the six basal 
ones much wider than long, somewhat axe-head shaped, much 
flattened dorsally ; remaining segments longer than wide, or 
at least as long, the eighth segment being the longest. P»2 
similar, but only 10 mm. long and with only 22 segments. 
Ps similar, but a little shorter. P4-P1)9 more prismatic, only 
