REPORT ON THE ASTEROIDEA. 549 
7. Cribrella sufflata, n. sp. (Pl. XCVI. figs. 5 and 6; Pl. XOVIII. figs. 1 and 2). 
Rays five R=80 mm.; r=12mm. R<7r. Breadth of a ray at the inflation near 
the base, 13 to 14 mm.; breadth of the same ray about midway between the disk and the 
extremity, 7 mm. 
Rays elongate, rounded, and perfectly cylindrical, abruptly inflated near the base, the 
inflation tapering off more gradually outwardly, the outer half of the ray being narrow 
and attenuate. The tip is recurved in the specimen described. The disk is very small. 
The plates of the abactinal surface are small, and form a distinct but rather close net- 
work, They are narrow and bevelled into an indistinct ridge, upon which are borne 
extremely small, widely spaced, conical granules; at intervals two or three are near 
together, and form an incipient group. Upon the disk, where the granules are slightly 
larger and the network closer, grouping is more apparent. These granules or incipient 
spinelets are so small that they only produce a slight roughness to the touch when the 
specimen is handled, and are invisible without the help of a magnifying-class. There is 
seldom more than one papula in each interspace. 
Along the lateral wall of the ray is a distinct narrow longitudinal line which traverses 
the whole length; this is composed of more compact and crowded groups of granules 
borne on what are probably the representatives of a series of small narrow marginal plates. 
A similar longitudinal line, in which the granules become more spiniform, may be traced 
immediately external to the adambulacral plates, at least on the inner half of the ray. 
The interspace between these two series gradually diminishes as it proceeds along the ray, 
and may be roughly divided into two longitudinal areas, the lower of which is occu- 
pied by rather large plates (in comparison with those hitherto mentioned) ; these are higher 
than long, and bear more or less definite vertically disposed groups of papilliform granules, 
separated by papule. The upper part of the area bears small irregular groups, with 
papulze interspersed. 
The armature of the adambulacral plates consists of about four pairs of spinelets (the 
spinelets of each pair placed slightly obliquely), followed on the outer part of the plate by 
one or two rows of two or three smaller spinelets, the whole forming a compact trans- 
versely disposed group. The spinelets decrease in size as they recede from the furrow ; the 
innermost pairs show some tendency to a subprismatic form, and have a rather thick 
membranous sac. There is a single isolated smaller spinelet high up in the furrow. 
The madreporiform body is small, irregular, and indistinct. Its surface is marked 
with few striations, which are not convoluted, and the intervening dissepiments are studded 
with uniform, papilliform, rounded granules. 
The anal aperture, which is large and distinct, is distinctly excentric in position. 
Colour in alcohol, a warmish shade of light brown, but the greater part is bleached 
into an ashy grey. 
Locality.—Station 170. North of the Kermadec Islands. July 14, 1874. Lat. 
