Erythrometra A. II. ("lark. 
Key to the S|)ecies ot" the Genus Erythrometra. 
a' Cirri with 36 — 39 segments, 18 mm. long; arms 60 mm. long (Molnccas; 
236 .Metres) aus/ra/is 
a" Cirri with 30 segments, 11 mm. long; arms 35 mm. long (southern Japan; 
99—270 Metres) ruder 
I . Erythrometra australis sp. nov. 
"Albatross" Stat. 5617. Dodinga Bay, Gilolo. 236 Metres, i E.v. 
The centrodor-sal is hemispherical, the small bare dorsal pole covered with closely set 
rounded tubercles. 
The cirri are about XXX, the long peripheral 18 mm. long with 36 — 39 segments, the 
short apical 4 mm. long with about 15 segments. In the long peripheral cirri the first two 
segments are more than twice as broad as long, the third is slightly broader than lono-, the 
fourth is tVom one third to one half again as long as broad, the fourth and fifth are about 
twice as long as broad, and the following gradually decrease in length to the fourteenth which 
is about as long as broad, and still further to the last dozen or so, which are about twice 
as broad as long; the longer earlier segments are rather strongly constricted centrally, with 
prominent ends; the distal dorsal border of the proximal segments is prominent; as the segments 
become' shorter they gradually develop a prominent median carination the crest of which is 
conve.K in lateral view. 
The radials e.xtend slightly beyond the rim of the centrodorsal ; their distal border is 
abruptly everted, smooth or more or less tubercular. 
The IBrj are appro.ximately oblong, between three and four times as broad as long, 
the jjroximal and distal edges prominently everted, the lateral edges bearing from four to six 
long blunt tubercles. 
The I Br, (axillaries) are rhombic, not quite twice as broad as long, the proximal and 
distal edges everted, and the lateral angles produced into a ventrolateral process, or bearing 
two long blunt tubercles resembling those on the lateral borders of the IBr,. Usually the sides 
of the IBrj diverge at an angle of about 60°, and the lateral angles of the axillaries nearly 
or quite meet above the gap thus formed. 
The arms are about 60 mm. long. 
The first brachials are short, twice as long exteriorly as interiorly, the median length 
approximately the same as the inner; the inner edges are in apposition, and the outer bear a 
rather broad thin ventrolateral jjrocess, and at the distal angle a tubercle; the proximal, and 
outer half of the distal, edg-es are thickened and everted. 
The second brachials are irregularly quadrate, twice as broad as long, with the proximal 
border slightly everted; the proximal inner and outer angles usually bear a tubercle. 
The first syzygial pair (composed of the third and fourth brachials) is slightly longer 
