STARFISHES OF THE PHILIFPIlsrE SEAS. 267 



pedicellariae, a few superomarginal, inferomarginal, and actinal in- 

 termediate pedicellariae ; narrower inferomarginal plates in the in- 

 terbrachia : slightly coarser actinal intermediate granules. Rays at 

 inner end of first pair of siiperomarginals which meet medially as 

 wide as length of first 3.5 superomarginals measured on ambitus; 

 interbrachia arcuate ; dorsal surface of ray nearly plane with abrupt 

 angles on the margin of disk and ray. R=probably nearly 4 r; 

 r=23 mm. ; breadth of ray at midinterbrachium, 26 mm. 



Description. — General appearance is much like that of N. moluc- 

 canus, and also similar to Koehler's N. ternalis from the Indian 

 region. The proximal radial and 2 adradial series of marginal plates 

 arc wider than long, but the width gradually decreases, so that on the 

 distal half of the papular areas the plates are only slightly wider 

 than long. The granules are roundish, flat-topped, and the central 

 are in 2 or 3 transverse rows proximally and 2 distally (in euryplax 

 often in only 1 row distally). The largest radial plates have 8 to 11 

 central granules and about 15 peripheral. The small 2-jawed pedicel- 

 lariae have a broad base and a narrow spatulate extremity and are 

 about 1.5 as high as width at base. Papular areas comprising 7 to 

 9 longitudinal series of plates. 



Rays broken. Marginal plates with an abrupt angle at edge of 

 ray. Superomarginals with fifth or sixth plates meeting medially, 

 the interbrachial plates only a little wider than long, as seen from 

 above, the sixth being as long as or a little longer than wide, the 

 subsequent ones longer than wide. In interbrachium. height of plate 

 about one-half the width. A well-marked sulcus all along side of 

 ray. Granules small, circular, truncate, spaced, becoming hemis- 

 pherical on the lateral face. A small, slender pedicellaria on most 

 of the interbrachial plates has 2 compressed jaws, so that when seen 

 from the side it is ovate. 



Inferomarginals narrower than in euryplax^ slightly arched, the 

 fourth as wide as long, as seen from below. Twenty or 21 adambula- 

 crals corresponding to 10 inferomarginals (18 in euryplax). Infero- 

 marginals extending laterally beyond superomarginals, very slightly 

 on ray, scarcely at all in midinterbrachium. The lateral angle, except 

 far long ray, is less than a right angle. Pedicellariae similar to those 

 of superomarginals, as are also the granules, these becoming coarser 

 on the exposed angle of ray. Granules of actinal surface are hemis- 

 pherical as on the lateral face. 



Actinal intermediate plates in 5 chevrons, with coarse spaced hemis- 

 pherical granules, fewer and larger than in euryplax, and larger in 

 center of plate, as in mucronatus. One or two slender pedicellariae 

 present at base of ray. 



Adambulacral plates similar to those of euryplax, the apophysis 

 appearing on the first plate, but not becoming conspicuous for 5 or 6 



