STARFISHES OF THE PHILIPPINE SEAS. 291 



instead of the sessile, bivalved type ; in having very many more gran- 

 ules on the abactinal plates, more tumid and longer proximal supero- 

 marginal plates, and very numerous actinal intermediate pedicel- 

 lariae; rays longer. General form stellate, with short rays and 

 shallow, arcuate, interbrachia ; R=109 mm., r— 51 mm., 'R=2.1 r; 

 breadth of ray at midinterbrachium, GO mm. Abactinal plates finely 

 granulated, the larger primary plates with 35 or 40 peripheral and 

 120 central, slightly smaller granules; proximal radial plates sur- 

 rounded, partially or wholly, by smaller, secondary plates; very 

 numerous small abactinal, broadly spoon-shaped, denticulate pedicel- 

 lariae; superomarginals proximally very tumid, 15 or 16 to the ray, 

 closely granulate except for a central irregular bare space on many 

 plates ; a few superomarginal and inf eromarginal pedicellariae ; actinal 

 intermediate areas very large, closely granulate, nearly all the plates 

 with 1 or sometimes 2 forceps pedicellariae, so that in the aggregate 

 they appear very numerous, the plates being small; adambulacral 

 plates with 5 or 6 stout, blunt, 4-sided or compressed furrow spines 

 and 2 arcuate series of subambulacral spines (4 or 5 in each series), 

 followed by 12 to 15 granules in 2 crowded, irregular series. 



Description. — Abactinal plates all clearly distinguishable and 

 arranged regularly on the radial areas and outer parts of interradial 

 areas, but not very regularly on center of disk. Primary plates of 

 radial areas hexagonal, arranged in a radial series and 3 longitu- 

 dinal series on either side, these interspersed and surrounded by 

 smaller, irregularly polygonal, roundish, or oblong plates, 6 to 8 

 about each plate. Proximally the consecutive radial and adradials 

 are separated by oblong or very much compressed, often irregular, 

 hexagonal ones, but near the middle of R these disappear from the 

 radial series and, also successively, a little nearer to center of disk 

 from the other 3 series. For a short distance beyond the middle 

 of R the secondary plates are found only at the sides of the lateral 

 series, but in the other series the lateral plates disappear about as 

 quickly as the transverse ones. The intermediate plates occupy, then, 

 a petaloid radial area extending about to the middle of R, and also 

 the center of disk, but here there is less difference in size between 

 the 2 kinds. Interradial plates numerous, gradually changing from 

 hexagonal to lozenge-shaped. There are many irregular forms, 4- to 

 6-sided or even roundish toward center of disk. All the plates are 

 covered with a fine, close granulation, the peripheral granules being 

 flattened, truncate, or finger-nail-shaped and distinctly larger than 

 the circular depressed central granules, which decrease slightly in 

 size toward the center of plate. A proximal radial plate has upward 

 of 35 or 40 peripheral and 120 central granules, all having the 

 appearance of being immersed in a soft, transparent matrix. Most 

 of the plates also bear an entrenched sugar-tongs pedicellaria with 



