REPORT ON THE ASTEROIDEA., 301 
abactinal area are larger, and bear on the central part of the tabulum more numerous 
- granules, which are polygonal and truncate instead of semiglobular, closely crowded, and 
usually form three or four lines. This form is remarkable for very peculiar additions to 
the pedicellariz on the plates adjacent to the adambulacral plates. These consist of two 
large prominent rounded granules, placed on one side of the entrenched pedicellariz 
and closely apposed together, themselves appearing like a thick massive subvalvate 
pedicellaria. 
Locality.—Station 192. In the Banda Sea, between the Ki Islands and the Banda 
Islands. September 26, 1874. Lat. 5° 49’ 15” S., long. 132° 14’ 15” E. Depth 140 
fathoms. Blue mud. Surface temperature 82°:0 Fahr. 
2. Nymphaster bipunctus, n. sp. (Pl. LIT. figs 3 and 4; Pl. LIII. figs. 11 and 12). 
Rays five R=34mm.; r=12 mm. R<3r. The minor radius is thus in the pro- 
portion of about 35 per cent. 
Rays rather short in comparison with the other members of the genus, narrow, and 
tapering slightly towards the extremity, which has the appearance of being rapidly pointed. 
Width midway between the centre and the extremity, 5°75 mm.  Interbrachial arcs 
wide and flattened, which emphasises the pentagonal form of the disk. 
The marginal plates are massive and form a vertical lateral wall, the section of the ray 
being rectangular in outline, with the angles slightly rounded. The supero-marginal 
plates are fifteen in number from the median interradial line to the extremity. The inner- 
most plates in the interbrachial arc have their height about equal to their length, whilst the 
breadth as seen from above is slightly greater. As they proceed along the ray, the pro- 
portion of the height diminishes and also that of the breadth, but to a less degree, the 
length being the greatest dimension near the extremity. The surface of the plates is 
covered with a small, uniform, semiglobular miliary granulation, fairly well spaced and 
distributed without order on the plate, except at the lateral margins, where it forms a lineal 
series and has a tendency to become slightly more papilliform. The median surface of the 
plates is slightly convex. One of the entrenched pedicellariz similar to those described 
in Nymphaster symbolicus occurs on the abactinal area of nearly all the supero-marginal 
plates, except at the extremity of the ray. The odd terminal plate is elongate and shield- 
shaped, angular adorally, with its free extremity subcylindrical, slightly tapering and 
obtusely truncate. The infero-marginal plates correspond to the superior series and are 
covered with similar and uniform miliary granules. Not more than two or three of the 
infero-marginal plates in each radial span are furnished with a pedicellaria, 
The armature of the adambulacral plates consists of a furrow series of eight very 
delicate spinelets, except near the middle of the ray, where ten are often present, and at 
the extremity where the number is less. The spinelets, which are very small, elongate, 
