322 



MR. W. PERCY S LADEN ON THE 



Subclass EUASTEROIDEA, Sladen. 



Order PHANEKOZONIA, Sladen. 



Family Archasteridje {Viguier), emend. Sladen. 

 Subfamily Archasterin^:, Sladen. 

 Genus Archastek, Muller Sf Troschel. 

 1. Archaster ttpicus, Muller Sf Troschel. 



Archaster typicus, Muller Troschel, 1840 (April), Monatsber. d. k. 

 Akad. d. Wiss. Berlin, p. 104 ; System der Asteriden, 1842, p. 65. 



Astropecten stellaris, Gray, 1840 (November), Ann. 8f Mag. Nat. Hist. 

 vol. vi. p. 181. 



Archaster nicobaricus, Mdbius(n. sp. Behn, MS.), 1859, Neue Seesterne 

 des Hamburger und Kieler Museums, p. 13 (Abhandl. a. d. Gebiete Naturw. 

 hrsg. v. d. naturwiss. Verein, Hamburg, Bd. iv. Abth. 2, 1860). 



Localities. King Island (native name JPadaw) ; Feb. 1882. Sir 

 William James Island; 7th Dec. 1881. 



Family Astropectinidj! {Gray), emend. 

 Subfamily Astkopectininjb, Sladen. 

 Genus Astkopecten, Linck. 



1. Astropecten Andersoni, n. sp. (Plate XXVI II. figs. 1-4.) 



Localities. King Island (native name Pa daw) ; Feb. 1882; 

 fcublittoral. Sullivan Island (native n&me Lamjpi); Feb. 1882 ; 

 10 fathoms. 



Kays five. K=50 mm. ; r=12 mm. K>4r. 



Breadth of a ray between the third and fourth supero-mar- 

 ginal plates, 105 mm. The majority of the examples collected 

 are about two thirds this size. 



Kays elongate, narrow, tapering gradually to the extremity, 

 which is rather obtuse. Disk small. Interbrachial arcs slightly 

 rounded. 



The paxillar area is compact and uniform, from three to four 

 times the breadth of the supero-roarginal plates at about midway 

 between the bane and the extremity of the ray. The paxilla) are 

 moderately large and distinctly stellate, the fcabulum bearing in 

 the centre from one to four shorl papilliform wpinelets, and the 



