STARFISHES OF THE PHILIPPINE SEAS. 153 



along the ray. One series extends to tenth interomiuginal, or a 

 little less than half the length of ray; a second extends to fourth 

 or fifth; and a third extends to the third inferomarginal. An odd 

 interradial series of about 4 plates extends from the pair of plates 

 back of the jaws to the margin. The plates have fairly high ridges 

 crowned by 15 or more slender, very thorny spinelets, larger at the 

 tip than at base, and longer than the inferomarginal spinelets. 



Adnmbulacral plates slightly convex. Furrow spines, 8 or 9, 

 long, slender, tapering, pointed, and slightly compressed, but not 

 forming a wide blade as in the foregoing species, the 3 or 4 median 

 the longest (considerably longer than plate) and the others gradu- 

 ated in length toward either end of series. Subambulacral spinules 

 15 to 20, much shorter, thorny, thickest at tip, and graduated in 

 length from the curAed series of 5 to 7 back of furrow spines to 

 the outer edge of plate where the spinelets are equal and similar to 

 those of actinal intermediate plates. The spinules nearest the fur- 

 row series are about two-thirds as long as the furrow spines, and 

 the lateral and outer margins of plate are armed with spinelets, 

 giving the appearance of a rosette on some plates. The subambu- 

 lacral spinules form about 3 longitudinal series, but often outside 

 the first series a regular arrangement is not discernible. 



Mouth plates with a marginal series of 8 or 9 long, slender, mar- 

 ginal spines, in a curved series, similar to the furrow spines, in- 

 creasing in length toward the inner angle where they are consid- 

 erably larger than the furrow spines. Suborals on the inner end 

 of plate nearly as long as the marginals, and thence decreasing in 

 length outward until they are subequal to the actinal intermediate 

 spinelets. They are numerous in about 3 series parallel to median 

 suture. 



Madreporic body small for the genus, about its own diameter from 

 the margin and overhung by 3 or 4 large paxillae. 



Tijpe.—Cat. Xo. 30530, U.S.N.M. 



Type-locality. — Station 5526, between Siquijor and Bohol Ishinds, 

 Philippine Islands, 805 fathoms, green mud and globigerina, bottom 

 temperature 52.3° F. ; 1 specimen. 



Distribution. — Sulu Sea, Mindanao Sea. and otl nor! hern S;iniar, 

 383 to 805 fathoms. 



Specimens examined. — Five; the type and 4 from the following 

 stations : 



Station 5423, Sulu Sea, near the Cagayanes Islands. 508 fathoms, 

 gray mud, coral sand, bottom temperature 49.8"^ F. ; 1 specimen. 



Station 5445, north coast of Samar, 383 fathoms, green mud, bot- 

 tom temperature 44.3° F. : 2 specimens. 



Station 5528, between Siquijor and Bohol Islands, 439 fathoms, 

 globigerina ooze, bottom temperature 53.3° F. ; 1 specimen. 



