'Alert' 1881-2

160 COLLECTIONS FROM MELANESIA,
Disk small. Arms about 70 millim, long, cirri about 16 millim.
pinnules sometimes banded with darker.
Colour white ;
This species presents some resemblances to A. pinniformis of
Carpenter.
Arafura
Channel.
Sea (32-36 fms.) ; Dundas Strait ; Prince of Wales
I provisionally associate with this, as a variety, two specimens
from St. 144, in which the cirri are rather more numerous and more
jointed, in which the whole animal appears to be more slender and
delicate, and the colour ashy grey.
9. Antedon reginas. (Plate XII. fig. A, a.)
Centrodorsal hidden by the cirri ; cirri about 30, with 30 stout
and laterally compressed joints, about 20 of which are provided with
a well-marked spine.
First radials not visible, second broader than long, in contact
third short, with a very slight backward projection in the middle
line. Two broad distichals. Thirt}--five arms ; if the arms divide
a second time there are two palmars, and the third brachial is a
syzygy ; if the arm does not divide a second time, the fifth brachial
is a syzygy. At first the joints are fairly regular, though much
shorter than wide ; later on they become more or less, though never
very strikingly, wedge-shaped.
Syzygies on the ninth joint ; then from 9-14 between each.
The first pinnule is shorter than the second, which is of some
length, and the
very short.
third than the fourth ; most of the pinnules are
Length of arms about 70 millim., cirri about 24 millim. Disk
deeply incised, 10 millim. in diameter.
Colour, flesh-coloured.
Port Molle.
10. Antedon articulata.
Coniatula (Alecto) articulata, Mull. Gat. Camnt. p, 27.
Port Molle.
11. Antedon gyges. (Plate XII. figs. B, a, h.)
Centrodorsal flattened, rounded, with cirri in three rows, rather
more than 40, with rather more than 30 joints, the fifth to the tenth
longer than broad, the sixcceeding joints shorter, and provided, first
this narrows into a wide spinous
of all, with a convex dorsal edge ;
protuberance, which becomes more and more spiny till
well-marked penultimate si)ine is reached.
The single specimen has 41 arms.
the fairly
First radials completely, second largely obscured ;' the third tri-
angular, not a syzygy ;
a slight median conical protuberance in the
;