MoO ONE eer ota Y COT LECT YOR GE 
Ronee Nek CRN Oia, FROM: THE 
EN DUAN O.C EeAN: 
By Austin H. CiarK, B.A., F.R.G.S. 
Some time after the completion of my report! upon the 
Crinoids collected by the ‘‘ Investigator’’ I received a few addt- 
tional specimens which had escaped notice when that collection 
was sent to me. 
In order that the published records of the large and important 
collection belonging to the Indian Museum may be complete these 
specimens are listed here. 
One of the items of interest brought to light by the study of 
this material is the discovery of a new species of Oligometra 
allied to the Australian O. adeone, in the Andaman Islands. Up 
to a few weeks ago O. adeone in North Australia and the Aru 
Islands and O. thetidis in New South Wales were supposed to 
represent a somewhat anomalous type of the genus peculiar to 
Australia; but very recently a related species, O. marginata, has 
been described from Solor Strait in the Lesser Sunda Islands, 
where it was dredged by the Dutch steamship ‘‘ Siboga.” Not 
only does this new species greatly increase the known geographical 
range of this curious group, but it possesses an additional interest 
in being intermediate in its characters between this group within 
the genus Oligometra and the species of the genus Prometra, 
furnishing new evidence of the very close inter-relationships 
between all of the genera comprised withiw the family Colobo- 
metride. 
Almost equally interesting is the new species of Zygometra 
herein described. Although not greatly different from Z. comata, 
which occurs from the Mergui Archipelago to the Philippine Islands, 
it appears to be quite distinct, and it appears to occupy a habitat 
considerably to the westward of that of any other species of the 
family. 
Family. COMASTERID. 
Subfamily CAPILLASTERINZ. 
CAPILLASTER SENTOSA (P. H. Carpenter). 
8° 51’ 30” N. lat., 81° 11’ 52” E. long.; 28 fathoms.—One 
small broken specimen. 
‘ Echinoderma of the Indian Museum, Part VII, Crinoidea. Calcutta, 1912. 
