68 
beyond the third are subequal, none being quite so long as broad; the fourth to the eighth 
or ninth have shghtly prominent distal edges, especially dorsally. The cirri are rather stout, of 
the same type as those of the Japanese E. variegaius. 
The five arms are about 75 mm. loncf; the brachials are unornamented, and their distal 
edges are not produced. 
Pc is 4 mm. long with i i segments, moderately stout, strongly prismatic, evenly tapering 
to the tip, the distal border of the segments sharply, though narrowly, carinate; Pj is 4.5 mm. 
long with 12 segments, similar to Pci Pa is 11 mm. long with 17 segments, very slender like 
the succeeding pinnules, though very stiff; the first two segments 
are slightly broader than long, the third and fourth half again as 
long as broad, the following gradually increasing in length and 
becoming distally three or four times as long as broad; the distal 
edges of the third and following segments are produced and spinous ; 
the pinnule resembles the lower pinnules in certain of the more 
slender species of Colobometra ; Pj is similar to Pa, 11 mm. long 
with 17 segments: Pb is similar to P.., 8 mm. long with 18 segments; 
P3 is 8 mm. long with 18 segments, proportionately more slender 
than P„ and with much shorter segments, which become as long 
as broad on the third and twice as long as broad proximally on 
the tenth or eleventh; Pc and P^ are 7.5 mm. long with 18 
segments, and resemble the preceding pinnules; the distal pinnules 
are 12 mm. long with 20 — 24 segments which beyond the fifth 
are twice, and distally are three times, as long as broad, with 
very finely spinous distal ends. 
The colour is white, the perisome of the pinnules purple; 
on either side of the middorsal line of the arms there is a broad 
yellow brown line; these lines are always parallel, so that there is between them a uniform 
white middorsal streak of about their own width ; beyond the arm bases they become faint and 
assumexa zigzag course, shortly after which they disappear. 
The characteristic features of this species are the stout cirri composed of very short 
segments, and the very slender proximal pinnules; in the first of these it agrees with .£". varie- 
gatus of Japan. 
Fig- 4- 
Lateral view of a specimen of Eudio- 
crinus pinnatus from Stat. 310. Natural 
size. (Courtesy of the U. S. National 
Museum). 
3. Eiidiocrinus venusttihis A. H. Clark. 
A. H. Clark. Proc. Biol. Soc. Washington, vol. 25, 1912, p. 27. 
Stat. 289. 9°o'.3S., 1 26° 24. 5 E. 112 Metres. 3 Ex. 
Stat. 294. io°i2'.2S., I24°27'.3E. 73 Metres. 55 Ex. 
The centrodorsal is thin discoidal, the bare dorsal pole flat, finely papillose, i mm. in 
diameter; the cirrus sockets are arranged in a single marginal row. 
The cirri are XII, 15 — 16, 6.5 mm. long, rather slender; the first segment is short, the 
