10 AUSTRALASIAN ANTARCTIC EXPEDITION. 
23 
Distribution.—Known only from Heard Island, the “‘ Discovery’ stations at 
Winter Quarters and near Mts. Erebus and Terror, and the ** Aurora” stations listed 
above. The bathymetric range is from 75 to 354 fathoms. 
Colour in life.—Yellow. 
Remarks.—This species is easily distinguished from its relatives by the short 
cirri with not more than 40 segments of which the longest are about twice as long as 
broad, and the majority, im large cirri, are broader than long. The segments have 
rather flarmg ends which give them a very characteristic appearance. The brachials 
beyond the oblong proximal are short, twice as broad as their greater (exterior) length. 
The axillaries are very broad, broader than long. Ps is more like P, than it is like P,, 
and the segments of the outer pinnules are strikingly short. 
In general appearance this species is extraordinarily like the Arctic Heliometra 
glacialis. 
The six-rayed specimen of this species recorded (as Antedon antarctica) from 
the “ Terra Nova ” collections by Professor F. Jeffrey Bell in 1917 is undoubtedly an 
example of Promachocrinus kerquelensis. 
Genus Ftorometra A. H. Clark. 
FLOROMETRA MAWSONI, sp. 10v. 
? Antedon antarctica (part) Bell, National Antarctic Exped., Nat. Hist., 4, Echinod., 
1908, p. 4 (* Discovery ; Winter Quarters). 
? Solanometra antarctica (part) A. H. Clark, Smithonian Miscellaneous Collections, 
61, No. 15, 1913, p. 61, No. 3 (“ Discovery ’’; Winter Quarters). 
Promachocrinus (Promachocrinus) kerquelensis (part) A. H. Clark, Die Crinoiden der 
Antarktis, 1915, p. 130 [bottom of page]; pl. 4, figs. la, 1b (vicinity of Gaussberg, 
222 fathoms). 
Description.—The centrodorsal is moderate in size, flattened hemispherical, with 
numerous (from 60 to 80) cirrus sockets which are closely crowded and irregularly 
arranged, though on the apical half showing a tendency to become aligned in columns. 
Beneath each radial there are between four and five sockets, irregularly alternating 
higher and lower, one or more being smaller than the others. 
The cirri are XL—L, 27-29, the longest 20-25 mm. in length. The first segment 
is very short, the second is from half again to twice as broad as long, the third is half 
again as long as its median width, and the fifth-seventh are about three times as long 
as their median width; those following very slowly decrease in length so that the 
outermost fourteen or fifteen are about as long as the distal width, except that the 
penultimate, which is narrower than those preceding, is from half again to twice as long 
