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. jainniformis of 

 Carpenter. 



Arafura Sea (32-36 fms.) ; Dundas Strait ; Prince of Wales 

 Channel. 



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. reginae. (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. Thirty-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 third than the fourth ; most of the pinnules are 

 very short. 



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. 

 Comatula (Alecto) articulata, Mill/. Gat. Comat. 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 succeeding joints shorter, and provided, first 

 of all, with a convex dorsal edge ; this narrows into a wide spinous 

 protuberance, which becomes more and more spiny till the fairly 

 well-marked penultimate spine is reached. 



The single specimen has 41 arms. 



First radials completely, second largely obscured : the third tri- 

 angular, not a syzygy ; a slight median conical protuberance in the 



