STARFISHES OP THE PHILIPPINE SEAS. 365 



mediate plates impinge upon the lateral wall of disk between the 

 lower ends of the proximal inferomarginal plates. Marginal plates 

 covered with close, fine, unequal, polj^gonal granules, the supero- 

 marginal a trifle larger than the abactinal, these increasing in size 

 toAvard the middle of the inferomarginals where the granules are 

 conspicuously larger, irregularly polygonal, and similar to those of 

 the actinal intermediate plates. Minute 2- jawed pedicellariae, as a 

 rule smaller than the granules, are scattered over the inferomarginal 

 plates and A'ery sparingly on the superomarginals (sometimes none). 

 The surface of the plates is smooth in alcoholic specimens, the pedicel- 

 lariae being sunk in shallow pits. 



Actinal intermediate plates, very clearly outlined by furrows, there 

 being 3 regular chevrons of oblong plates (long axis transverse) with 

 an odd plate at apex, followed by about 6 less regular chevrons of 

 elongate hexagonal plates without an unpaired interradial plate. The 

 distal plates of each series are less regular and are situated on the 

 rounded angle between ventral and lateral surfaces. The plates ad- 

 jacent to furrow are the largest and generally oblong, although the 

 external side may have 2 facets. The intermediate plates also form 

 fairly regular series from the adambulacrals to the margin. The 

 plates are covered with flat, unequal, irregularly polygonal, close- 

 set granules, the middle of the plate being plane, but curving down 

 abruptly at the margins, to the conspicuous sutural furrows. The 

 plates near the mouth angle are surrounded by a fold of the integu- 

 ment, as if by a frame, on which the granules are nearly uniform in 

 size, quadrate and not so closely packed as on the plate proper where 

 they are larger and very unequal. Two-jawed, slightly sunken, 

 pedicellariae, about the size of the quadrate granules, are plentiful 

 around the edges of the plates near the furrow, and smaller ones on 

 the surface of the other plates, especially on the rounded edge of the 

 disk, adjacent to the inferomarginals. There are no signs of 

 tubercles, the granules being very flat and smooth. 



Adambulacral plates with a compact straight perpendicular fur- 

 row comb of 8 to 11 slender, blunt spines, the acloral the shorter, and 

 the longest slightly aborad of the middle of the series, whence the 

 spines decrease slightly in length to the aboral end of the series. 

 When there are 8 spines they are of nearly equal length, and the 

 first and last of the series are conspicuously broader than the others. 

 The longest spines are slightly longer than the base line of the comb. 

 Back of these are 2 or 3 short heavy tubercular spines (near tip of 

 ray only 1) with rounded, wrinkled or eroded tips. The median is 

 usually slightly the larger when there are 3; and when there are 2 

 they are subequal, or the adoral is slightly the larger. A large 



