STARFISHES OP THE PHILIPPINE SEAS. 125 



7 plates occur, and in the next 2, also meeting the first inferomar- 

 ginal, are 6 and 5 plates, respectively. The covering of the inter- 

 mediate plates resembles that of cmgulatus^ but the spinelets are even 

 more numerous and each interradial triangle contains about 10 or 12 

 slender elongate spines and a very few fasciculate pedicellariae, with 

 4 or 5 spiniform jaws on the plates adjacent to adambulacrals. 



Adambulacral plates with a curved furrow margin, 9 furrow and 

 2 longitudinal series of slender, membrane-covered, rather fleshy 

 subambulacral spines, about 5 in the inner series and 4 to 7 slightly 

 shorter ones in the second. The tips of the furrow comb form a 

 straight or only slightly curved contour, and the armature is of the 

 type of cingulatus. The subambulacral spines have a conspicuous 

 lateral flange of skin, and look as if webbed for more than half their 

 length. They are not, however. The appearance is due to the juxta- 

 posed edges of the vanes. On the first to the third plates a few 

 actinal spinelets may be coordinated into a conical pedicellaria. 



Mouth plates with a very large, broadly lanceolate, inner tooth. 

 The true furrow series forms a very acute angle on the level of the 

 base of this spine in such a way that a horizontal or oblique double 

 series of altogether six or seven spinelets projects across mouth of 

 furrow, near the peristome. Ten or more additional spinelets con- 

 tinue this series from the base of the tooth along the true margin 

 of plate to the outer end, and considerably above (as viewed ac- 

 tinally) the double angular series referred to above. There are 

 numerous suboral spinules in 2 additional (interradial) series much 

 as in cingulatus. 



Madreporic body small, very convex, on the marginal side of the 

 center of r. Striae like those of cingulatus. 



Type.— C?it. No. 30524, U.S.N.M. 



Type-locality. — Station 5648, Buton Strait, Celebes (lat. 5° 35' S. ; 

 long. 122° 20' E.), 559 fathoms, green mud, bottom temperature 

 39.2° F. 



Remarks. — This species differs from P. cingulatus in having 

 much smaller paxillae, abactinal and numerous marginal fasciculate 

 or fasciculate-pectinate pedicellariae, 1 or 2 slender appressed supero- 

 marginal spines, fewer inferomarginal spines, smaller inferomar- 

 ginal squamiform granules or spinelets; much heavier teeth; larger 

 disk; and the combined marginal plates arc lower in proportion to 

 width of ray. 



PERSEPHONASTER SULUENSIS Fisher. 



Plate 22, fig. 2 ; plate 23, fig. 1 ; plate 38, figs. 1, la-e. 

 Fcrsephonastcr sulncnsis Fisher, 1913«, p. G17. 



Diagnosis. — Near P. multicincfus. Differs in having the supero- 

 marginal plate with the transverse ridge between the center and 



