STARFISHES OF THE PHILHTINE SEAS. 295 



tion between the adoral edge and middle; proximally a large 

 bivalved subambulacral pedicellaria near furrow, the remainder of 

 plate being occupied by rather small granules, those in line with 

 pedicellaria being enlarged and subspinose. 



Description. — Abactinal plates numerous, with a very smooth and 

 slightly convex surface, on the radial region regularly hexagonal, 

 and on center of disk and in about 9 longitudinal (radial) series dis- 

 tinctly tabulate, each tabulum surrounded by 6 papulae, the area of 

 tabulate plates reaching about two-fifths K. The papular areas are 

 proximally considerably wider than the area of obviously tabulate 

 plates. Interradial plates flat, irregularly four- to six-sided. All 

 abactinal plates surrounded by a single series of flat squarish gran- 

 ules, set in membrane and flush with surface of plate, those on the 

 radial plates hard to see, and larger on the lateral than on the trans- 

 verse margins of tabulum. 



The median radial plates, as viewed from the inner or coelomic 

 side, are wider than long with 8 short truncate lobes in the middle 

 third of the series; proximally the plates are roundish with 6 lobes; 

 distally there are 6 lobes, and the plates are wider than long; the 

 adraclial and 2 adjacent series have successively shorter lobes, which 

 are strongest on the adcentral side, while the other plates of the 

 papular areas are roundish with slight indentations to allow the 

 passage of the 6 pupulae. The interradial plates are lozenge-shape, 

 sometimes with the corners truncated. In the case of the radial 

 plates the transition between the 6- and 8-lobed plates is caused by 

 the gradual splitting of each distal and proximal lobe into two. 



Marginal plates conspicuous. Superomarginals (30 to a ray) 

 form an even, slightly arched bevel in interbrachium, but on ray a 

 rounded angle, being there somewhat wider than high. Proximal 

 superomarginals decidedly wider than long, the width very grad- 

 uallj^ and uniformly decreasing toward the end of ray, while the 

 tumidity of the plates gradually increases. Plates surrounded by a 

 single series of small flush granules forming an inconspicuous border, 

 and in addition, on the lateral face of ray, adjacent to the outer or 

 lower edge, is a second series with a few scattered granules above. 

 On the outer part of ray there is but the single marginal series. The 

 distal 5 to 8 superomarginals are in contact medially, while usually 

 1 or 2 others touch and segregate 1 or 2 of the distal median radial 

 plates. Terminal plate much broader than long, truncate distally, 

 but roughly cordiform. 



On the outer part of ray the inferomarginals extend laterally a 

 trifle beyond the superomarginals. The amount to which the infero- 

 marginals encroach upon disk is variable. The plates form a 

 rounded bevel in interbrachium, but a rounded angle on the ray, and 

 are surrounded by 2 series of granules similar to those of superomar- 



