STARFISHES OF THE PHILIPPINE SEAS. 73 



ginal and adambulacral armature. A. scoparius lacks the prominent 

 interbrachial superomarginal spines, has larger paxillae and more 

 numerous inferomarginal spines. In the arrangement of supero- 

 marginal spines the species is nearest pugnax Koehler and mauri- 

 tianus Gray. From the latter it differs in several minor details, such 

 as the adambulacral armature, with its enlarged subambulacral spine, 

 the smaller paxillae, the regular transverse series of inferomarginal 

 spines. Pugnax has large, crowded paxillae, an inferomarginal 

 armature identical with scoparius^ and a slightly different adambu- 

 lacral armature. 



Doderlein recently named the Hawaiian form which he placed in 

 his revision of Astropecten in the " vappa group," along with 

 A. vappa, triseriatus koehler-i, bengalensis, mauritianus, orsinii, and 

 acanfhifer. 



Astropeeten hawaiiensis Doderlein, 1917, p. 51 {= Astropecten 

 velitaris Fisher, 1906, p. 1005, pi. 1, fig. 2; pi. 2, figs. 2, 2«) may be 

 diagnosed as follows: Similar in general appearance to a small 

 ^1. mauHt'ianus^ but differing in having smaller paxillae, 2 lateral and 

 2 or 3 actinal inferomarginal spines, forming a single series near or on 

 distal margin of plate, and in having 1 series of 3 (or less often 2) 

 subambulacral spines, the distal conspicuously enlarged. Differing 

 from A. koehleri in the characteristic arrangement of superomarginal 

 tubercles and in the inferomarginal armature as w^ell as in having 

 smaller paxillae; perhaps more closely related to the latter. Type- 

 locality. — Albatross station 4055, Hilo Bay, Hawaii, 50 fathoms, fine 

 gray sand. 



ASTROPECTEN GRANULATUS Miiller and Troschel. 



Astropecten granulatns Muller and Tkoschel, 1S42, p. 75. — Sladen, 1889, 

 p. 215, pi. 35, figs. 3 and 4 ; pi. 39, figs. 4-6.— Doderlein, 1896, p. .305, pi. 

 18, figs. 30, ZOa; 1917. p. 148, pi. 5, fig. 7; pi. 14, figs. 1, 3, 3a; pi. 17, 

 figs. 2, 21), 3.— Koehler, 1910o, p. 40 ; 1910&, p. 266. 



One immature specimen from station 5382, Ragay Gulf, Luzon, 

 128 fathoms, mud. 



This example has E=15 mm., r=5 mm. It agrees more closely 

 with the figure of Sladen than with that of Doderlein (189G). The 

 spinelets of the paxillae and superomarginal plates are slenderer and 

 less granuliform than in Sladen's specimen, and the subambulacral 

 spinelets are not so stumpy and broad. These are in a single series of 

 3, subequal or the middle slightly enlarged. The proportions 

 of the superomarginal and inferomarginal plates and shape of rays 

 conform to Sladen's figures. The more delicate spinulation may in 

 some way be correlated with the unusually great depth at which the 

 Albatross specimen was dredged. 



The Challenger specimen was taken in the Arafura Sea at 28 

 fathoms, green mud. Koehler's example was taken at the Aru Is- 



