6. Cosiniometra luoodutasoni (Bell). 
Hkli,. Journ. Linn. Soc. (Zool.), vol. 24, 1893, p. 540, pi. 23 [Antcdon -Mood-masoni). 
\. W. Cl.\RK. Crinoids of the Indian Ocean, 1912, p. 214 [Cosmiometra icoodmasoni). 
■ Smithsonian Miscellaneous Collections, vol. 61, 1913, N" 15, p. 44 {Cosinioiiuira iK.'ood- 
masoni). 
-7. Cosuiiometra aster (A. H. Clark). 
A. H. Ci..\KK. Proc. U. S. National .Museum, vol. 33, 1907, p. 145 [Antcdon aster). 
Proc. U.S. National Museum, vol. 34, 190S, p. 310 [Thalassometra aster); p. 311 [Tlia- 
lassometra komachi). 
8. Cosiiiioiiicfra pJiilippinensis A. H. Clark. 
.\. H. Ci..\RK. Proc. U.S. National Museum, vol. 39, 191 1, p. ^d,'i> [Cosmiometra philippincnsis). 
Zool. Anzeiger, vol. 39, 1912, N" 11 I2, p. 427 [Cosmiometra helene). 
Stat. 95. 5°43'.S N., ii9°40 E. Sulu Archipelago. 522 Metres, i Ex. 
Stat. 253. 5°48'.2S., 132° 13' E. Arafura Sea. 304 Metres, i Ex. 
Stat. 254. 5°40'S., 132° 26'?'. Arafura Sea. 310 Metres, i Ex. 
From. Stat. 95 there is one young specimen with 13 arms 45 mm. long and the longest 
cirrus 2 1 mm. long with 40 segments. 
The example from Stat. 253, which I at first considered as representing a new species, 
helene., may be described as follows : 
The centrodbrsal is moderate in size, truncated conical, about 4.5 mm. broad at the base 
and about 2.5 mm. high interradially. The cirrus sockets are arranged in ten columns of two 
or three each; interradially the columns are in close apposition, but in the midradial line they 
are separated by a wedge-shaped area, at first about as broad as a cirrus socket, but with the 
converging sides coming together just beyond the last cirrus sockets, which is entirely covered 
with fine, more or less sharp, granulations. The dorsal pole is irregular, 2 mm. in diameter. 
The cirri are moderately stout, i-j mm. to 47 mm. long, with 52 — 61 segments of 
which the first four are very short, the fifth sligthly over twice as broad as long, the sixth, a 
transition segment, half again as long as broad, and the seventh slighdy longer than the sixth ; 
the following gradually decrease in length, becoming about as long as broad on the thirteenth, 
twice as broad as long on the twentieth, and shorter distally; dorsal processes begin on the 
thirteenth, gradually increasing in height; the dorsal spines are high, strongly carinate, V-shaped 
in end view, the two distal edges finely serrate; at the tip of the cirrus they become narrower 
and smooth. 
The radials are entirely concealed; the IBr, are short, about four times as broad as the 
lateral length, slightly convex proximally, distally incised by a rounded process from the axillary 
so that the median length is only about two thirds of the lateral ; the proximal border is armed 
with very numerous fine short spines; the distal border is similarly modified, but the spines 
become more or less obsolete in the median third; the lateral borders are similarly modilied, 
but the spines extend further imward over the dorsal surface of the ossicle and are more 
