'53 
In general appearance this species is intermediate between giganka and annandalei^ 
though rather more Hi<e the former. 
It differs from gigantca in having keels on the proximal elements of the pairs of ossicles 
forming the division series, and the first pair of brachials as well as on the distal ; in th<i more 
numerously jointed, more slender, and relatively longer cirri; in having more numerous arms 
(28 instead of 17); in the absence of interradial ridges separating the columns of cirrus sockets 
on the centrodorsal ; in the much less spinous borders of the ilivision series and lower brachials; 
anel in having; the lIlBr series 4 (3 4- 4) instead of 2. 
It differs hum annandalei in being larger and more robust; in having no spines on 
the dorsal surface of the proximal ossicles; in having the ossicles of the division series with 
irregularly dentate produced lateral borders instead of smooth: in the much less spinous dorsal 
surface of the earlier brachials; and in the larger and stouter cirri. 
3. Oceanoniefra annandalei (A. H. Clark). 
A. H. Clark. Proc. U.S. National Museum, vol. 36, 1909, p. 406 [Crotalouulra eupedatq; 
eleven armed example). 
Proc. U. S. National Museum, vol. 36, 1909, p. 642 (Crotalomelra annandalei). 
Proc. U.S. National Museum, vol. 39, 191 1, p. 551 [Thalassoinetra annandalei). 
Crinoids of the Indian Ocean, 1912, p. 195, fig. 35, p. 196 [Tlialassoinetra annandalei). 
Cosmiometra A. \\. Clark. 
Key to the Species of the Genus Cosmiometra. 
a^ 28 arms, a IIIBr series being developed on the outer side of each IIBr series, 
too mm. long; cirri with about 40 segments, 25 mm. to 30 mm. long; 
ossicles of the division series with everted, though perfectly smooth, edges, 
and a narrow and low, but prominent median carination which, becoming 
zigzag on the triangular brachials beyond the arm bases, is continued to 
the arm tips (Hawaiian Islands; 574 Metres) delicata 
a- 20 arms; no lllBr series developed 
b^ elements of the division series and first two brachials with numerous fine 
spines, either in a broad band along the lateral borders of the dorsal 
surface, or in a row alone the entire everted border of each ossicle 
c^ radials, lateral third of the IBr series, and lateral fourth of the IIBr 
series covered with a band of densely packed fine spinules; edges of 
the ossicles of the division series and brachials with a row of very 
fine spinules, but not everted; no carination on the division series or 
arms; arms 100 mm. to 130 mm. in length; cirri with 49 — 61 seg- 
ments (Kei Islands to northern Mindanao, Philippines; 
304—612 Metres) philippincnsis 
c- radials concealed; lateral borders and proximal and distal edges of 
the ossicles of the division series and first two brachials everted and 
SIBOGA-E.^PEIJITIE XI.Il/'. *° 
