Eumorphometra A. H. Clark. 
Key to the Species of the Genus Eumorphometra. 
a' Cirrus segments 20 — 25, of whicli the fourth-si.xth are about twice as long as 
broad (shores of the Antarctic continent in the vicinity of Gauss- 
berg; 380 — 400 Metres) concinna 
a'' Cirrus segments 25 — 30, the longest only slightly longer than broad (near Marion 
Island, in 46°43'oo"S., 38° 04' 30" E., ; 252 Metres) hirsuta 
1. Eumorpho7netra hirsuta (P. H. Carpenter). 
P. H. Carpenter. "Challenger" Reports. Comatulae, 1888, p. 188, pi. 31, fig. 5 [Antedon 
hirsuta). 
A. H. Clark. Smithsonian Miscellaneous Collections, vol. 61, 19 13, N" 15, p. 66 [Tliaumato- 
metra hirsuta). 
Die Crinoiden der Antarktis, 1915, p. 118 [Euuiorplioutetra hirsuta). 
2. EumorpJiomctra concinna A. H. Clark. 
A. H. Clark. Die Crinoiden der Antarktis, 191 5, p. 118 [Eumorpluimetra concinna). 
Balanometra A. H. Clark. 
Key to the Species of the Genus Balanometra. 
a^ Centrodorsal very long, nearly three times as long as broad at the base ; the 
two columns of cirrus sockets in each radial area are separated from those in 
the adjacent radial areas by shallow rounded furrows averaging about half as 
broad as the sockets; the two columns are separated from each other by a line 
rather less than half as broad as the furrows separating the pairs; 27 — 35 cirrus 
segments, of which the longfest are four times as lonof as broad or even longer, 
and the terminal ten are as long as, or slightly longer than, broad (Philip- 
pinelslands;! 40 Metres) elongata 
a'- Centrodorsal conical with slightly swollen sides, half again as long as broad at 
the base; the two columns of cirrus sockets in each radial area are separated 
from those in the adjacent radial areas by deep interradial furrows, and the 
two columns themselves are separated by a similar, but narrower and shallower 
furrow; 35 — 40 cirrus .segments, of which the longest are not over three times 
as long as broad, and the outermost are all markedly longer than broad 
(Philip p i n e Isla nd s; 148 Metres) ialafioides 
I. Balanometra elongata (A. H. Clark). 
A. H. Clark. Smithsonian Miscellaneous Collections (Quarterly Issue), vol. 52, 190S, part 2, 
p. 229 {Ferometra elongata). 
