30 Proceedings of the Royal Physical Society. 



5. Astropecten polyacanthus, M. & T. 

 Perrier, loc. cit., v. p. 275. 

 Locality. — I., Tavoy Island, 8 fathoms, shelly sand and mud. 



B = \b'o r = 4. Breadth of arm at base = 4'5. 



A single specimen, apparently a young form, in which the spines of the 

 ventral surface are scarcely developed. One supero-marginal on either side 

 of the median interradial line bears a distinct tooth-like spine inclined 

 slightly inwards. 



The specimen seems to be referable to this species. 



Recorded previously from the Red Sea, Zanzibar, and Mozambique, the 

 Seychelles and Ceylon to Hong Kong, the Fiji Islands, and Port Jackson. 



6. Luidia forcifer, Sladen. 

 Sladen, " Challenger " Reports, xxx. p. 258, pi. xliv. fig. 5, and pi. xlv. figs. 5 and 6. 

 Locality. — IX., Between Courts Island and Bentinck Island, 12 to 26 

 fathoms, coral and sand. 

 A single specimen, not of full growth, but which can be referred to this 

 species. Li = 30 r = 5. 



Collected by Dr Anderson at King Island and at Sir William James 

 Island in the Archipelago, and also known from Torres Strait and the 

 Arafura Sea. 



7. Luidia maculata, M. & T. 

 Perrier, loc. cit., v. p. 258. 



Localities. — XVIIL, Off Paway Island, 10 to 21 fathoms, sand and shell ; 

 XXV., Gregory Group, 4 to 14 fathoms, sand and shell. 



Several young specimens, in the largest of which Ii= 62 and r- 11. 



Found by Dr Anderson at King Island. Also known from Mozambique 

 to Madras, Manilla, and Japan. 



8. Goniodiscus articulatus (Linn.), Liitken. 

 Lutken, Vidensk. Medd. (1864), p. 147. 

 Locality. — XLI., Moskos Islands, 12 to 25 fathoms, rock and sand. 



A single dried specimen in which B = 7Q, r=35. Number of marginals, 

 14 to 15. 



This specimen agrees with that collected by Dr Anderson at King Island 

 in 1882 in having the interbrachial arc more rounded than in de Loriol's 

 figure, and consequently the rays appear more well-defined (de Loriol, Bee. 

 Zool. Suisse., t. i. p. 638, pi. xxxv., 1884). 



