REPORT ON THE ASTEROIDEA. 547 
are closely studded with conical spinelets, which give the surface a very echinulate appear- 
ance, and almost mask its presence. 
Colour in alcohol, a dirty light brownish grey. 
Locality.—Station 148. Off the Crozet Islands. January 3,1874. Lat. 46° 47/0’S., 
long. 51° 37’ 0” E. Depth 210 fathoms. Hard ground, gravel, shells. Surface tempera- 
ture 41°:0 Fahr. 
Remarks.—This species is distinguished from all the species with which I am 
acquainted by the peculiar secondary network on the abactinal surface, the meshes of 
which are filled up with smaller plates. The extremely small microscopic spines borne on 
the abactinal plates, and the subregular well-defined series of actinal intermediate plates, 
also furnish marks by which the species may be recognised. 
6. Cribrella simplex, n. sp. (Pl. XCVII. figs. 5 and 6; Pl. XCVIIL. figs. 9 and 10). 
Rays five R=27mm.;7r=6 mm. R=4'5 r, Breadth of a ray at the base, 
6°25 mm. 
Rays elongate, rounded, perfectly cylindrical, tapering gradually but slightly from the 
base to the extremity, which is obtuse. Disk small, with more or less distinct depres- 
sions or sulci in the median interradial lines abactinally. Deeper and more conspicuous 
depressions are present on the actinal surface. Interbrachial arcs angular. 
The plates of the abactinal surface, which are small and narrow, form a clearly defined 
open network of delicate character. The plates are bevelled into a more or less distinct 
ridge, upon which are borne, at wide intervals apart, single isolated hemispherical or 
slightly conoid granules, which are quite invisible without the aid of a magnifying- 
glass. The meshes are relatively large and are occupied by one or occasionally two 
papulee. 
On the lateral wall of the ray an indistinct longitudinal series of small plates, which 
represent a supero-marginal series, may be discerned ; and below these a second and more 
conspicuous longitudinal series of larger plates, which represent the infero-marginals, is 
present. These two series are separated on the inner half of the ray by a series 
of small, vertically disposed, intermediate plates between which are large papule ; and 
on the inner half of the ray the infero-marginal series is separated from the adambulacral 
plates by actinal intermediate plates, of which two or even three series may be present at 
the base of the ray, but the upper series extends a very short distance, and that next the 
adambulacral plates extends very little further than half way along the ray. The spinu 
lation of the plates above described, which intervene between the abactinal and adambu- 
lacral plates, is remarkable, from the fact that it shows a tendency to form vertical or 
transverse single lines of papilliform granules. In some examples the vertically disposed 
series of granules on the infero-marginal plates may be doubled. 
The armature of the adambulacral plates consists of a single transverse series of three 
