Report on the zoological collections made in the Indo-Pacific Ocean ...

;160 COLLECTIONS FROM MELANESIA,Disk small. Arms about 70 millim, long, cirri about 16 millim.Colour white ;pinnules sometimes banded with darker.This species presents some resemblances to A. pinniformis ofCarpenter.Arafura Sea (32-36 fms.) ; Dundas Strait ; Prince of WalesChannel.I provisionally associate with this, as a variety, two specimensfrom St. 144, in which the cirri are rather more numerous and morejointed, in which the whole animal appears to be more slender anddelicate, and the colour ashy grey.9. Antedon reginas. (Plate XII. fig. A, a.)Centrodorsal hidden by the cirri ; cirri about 30, with 30 stoutand laterally compressed joints, about 20 of which are provided witha well-marked spine.First radials not visible, second broader than long, in contactthird short, with a very slight backward projection in the middleline. Two broad distichals. Thirt}--five arms ; if the arms dividea second time there are two palmars, and the third brachial is asyzygy ; if the arm does not divide a second time, the fifth brachialis a syzygy. At first the joints are fairly regular, though muchshorter than wide ; later on they become more or less, though neververy 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 somelength, and the third than the fourth ; most of the pinnules arevery short.Length of arms about 70 millim., cirri about 24 millim. Diskdeeply 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, rathermore than 40, with rather more than 30 joints, the fifth to the tenthlonger than broad, the sixcceeding joints shorter, and provided, firstof all, with a convex dorsal edge ;this narrows into a wide spinousprotuberance, which becomes more and more spiny till the fairlywell-marked penultimate si)ine is reached.The single specimen has 41 arms.First radials completely, second largely obscured ;' the third triangular,not a syzygy ; a slight median conical protuberance in the