'55 



6. Cosmiometra woodmasoni (Bell). 



BELL. Journ. Ltnn. Soc. (Zool.), vol. 24, 1S93, p. 340, pi. 23 {Antedon wood-masoni). 

 A. H. Clark. Crinoids of the Indian Ocean, 191 2, p. 214 {Cosmiometra woodmasoni). 

 Smithsonian Miscellaneous Collections, vol. 61, 191 3, N° 15, p. 44 {Cosmiometra wood- 

 masoni). 



7. Cosmiometra aster (A. H. Clark). 



A. H. Clark. Proc. U.S. National Museum, vol. 33, 1907, p. 145 {Antedon aster). 



Proc. U.S. National Museum, vol. 34, 1908, p. 310 {Thalassometra aster); p. 3 1 1 {Tha- 



lassometra komaclü). 



8. Cosmiometra philippinensis A. H. Clark. 



A. H. CLARK. Proc. U.S. National Museum, vol. 39, 191 1, p. 548 {Cosmiometra philippinensis). 

 Zool. Anzeiger, vol. 39, 1912, N° 11/12, p. 427 {Cosmiometra helene). 



Stat. 95. 5°43'.5 N., ii9°4o'E. Sulu Archipelago. 522 Metres. r Ex. 

 Stat. 253. 5°4S'.2S., 132° 13' E. Arafura Sea. 304 Metres. 1 Ex. 

 Stat. 254. 5°4o'S., i32°26'E. Arafura Sea. 310 Metres. 1 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 iirst consiclered as representing a new species, 

 helene, may be described as follows : 



The centrodorsal 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 thfee each; interradially the columns are in close apposition, but in the midradial line they 

 are separated by a wedge-shaped area, at hrst about as brpad 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, 2>7 mm - to 47 mm - ' on &i w i tn 5 2 — 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 slightly 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, Y-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 IBrj 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 modified, 

 but the spines extend further imward over the dorsal surface of the ossicle and are more' 



