86 ECHINODERMA OF THE INDIAN MuSEUM, PART VII, 



ing brachials with strongly produced and finely spinous distal ends. The arm 

 increases gradually in diameter up to the tenth brachial, then tapers away very 

 gradually distally. Syzygies occur between the third and fourth brachials, again 

 usually between the thirteenth and fourteenth, and distally at intervals of four 

 (more rarely five) oblique muscular articulations. 



Disk covered with rather coarse papillre ; mouth sub-marginal, anus sub- 

 central. 



P, 10 mm. long, slender, with thirty-five segments, of which the first is 

 short, oblong, about two and one-half times as broad as long, and the following 

 are rhombic, at first nearly twice as broad as long, gradually becoming longer 

 and about as long as broad after the sixth ; second and following segments with 

 the corners cut away, this gradually decreasing distally and disappearing entirely 

 after about the twelfth segment ; second to tenth or eleventh segments with long 

 single or double spines projecting vertically from the dorsal surface, at first about 

 equal to half the diameter of the joint in height, but slowly decreasing in length 

 distally ; terminal comb short, very prominent, rising abruptly, with six oi- seven 

 teeth which are subequal, triangular, slightly longer than broad, rather longer 

 than the diameter of the segments which bear them, the bases in apposition, 

 rather strongly recurved; P.^ 5 mm. long, with twenty segments, resembling P, 

 but weaker and more slender ; P, 3- 5 mm. long with fifteen segments, resembling 

 P.^ ; P,j and following pinnules stouter than the preceding, 6 mm. long, with 

 about twenty segments, the first two short, the remainder squarish, becoming 

 longer than broad distally ; the distal ends of the segments are spinous and 

 sti'ongly overlapping, and the more proximal segments are usually furnished with 

 more or less prominent dorsal spines in addition ; distally the pinnules gradually 

 become shorter and more slender, the distal pinnules being 6 mm. long, very 

 slender, with about twenty segments, the first two short, the third longer than 

 broad, the remainder elongated, with slightly expanded ends, becoming about 

 twice as long as broad distally; terminal combs occur usually on most of the 

 genital pinnules, and at intervals on those in the distal part of the arm. 



The colour is chrome yellow, the skeleton yellowish white. 



Habitat. — Philippine Islands (Tawi Tawi group). 



Depth. — 49 fathoms. 



COMASTER MULTIBRACHIATA. 



Actinometra novif-t/innecF IHli). P. H. Cakpentkr, Proc. Roy. Soc, vol. 28, 



p. 386. 

 Actinometra midtibrac'hiata 188S. P. H. Carpenter, ''Challenger'' Reports, 



vol. 26, Zoology, p. 299, pi. Ivi, figs. 3, 4. 

 Actinometra regalis 1894. Bell. P. Z. S., 1894, p. 396 (part). 

 Cowaster wvltibrachiata 19(t8. A. H. Clark, Proc. U. S. Nat. Mus., vol. 33, 



p. 686. 



