Madreporpladen lidt aflang, sidder strax bortenfor 
Analaabningen, Fig. 11. 
Armene ere temmelig runde, omtrent 2”” brede ved 
Grunden. Piggene ere ordnede paa samme Vis som paa 
Skiven, men Maskerne ere mere regelmæssige og danne, 
især til Siderne, Længderækker. I enhver Maske sees ned- 
sænket en Tentakelpore. Paa hele Armens Ryg, ligefra 
Skiven og ud til Spidsen, sees disse Rækker af Tentakel-. 
porer, Fig. 12. 
Armenes Rand har to Rækker Pigge, en der tilhører 
Ryggen, en Bugen. De dorsale Randpigge ere stumpe og 
korte, Fig. 12. De ventrale ere længere, mere tilspidsede 
end de dorsale og staa lige over for disse, Fig. 13. 
Bugen flad. Ambulacralfuren smal, forsynet med 2 
Rækker cylindriske Fodder uden Spikler og 3 Rækker 
takkede Pigge, hvoraf de i den inderste Række ere de 
længste og indtage Furens halve Bredde, Fig. 13. Imel- 
lem den yderste Række Ambulacralpigge og de ventrale 
Randpigge sees paa den inderste Del af Armen en Række 
stumpe Pigge, Fig. 13, a. Interbrachialrummet er smalt 
og besat med stumpe Pigge, der synes at danne et Par 
Tverrækker, Fig. 13, 0. 
Mundpladerne have paa deres indre, afrundede Rand 
2 stærke Tænder, Fig. 13, c, og paa Siderandene 3 lange 
Takker, Fig. 13, d, der gribe saaledes ind i hverandre, at 
Munden ganske lukkes, Fig. 13. 
Ryggens Hudskelet bestaar af et Kalknet med meget 
vide Masker, der dannes ved, at smaa, lidt aflange, smale 
Kalkplader legge sig paa hverandres Ende, Fig. 14, a, 
hvorved længere Bjelker fremkomme, som da forene sig og 
danne Nettet, Fig. 14. Paa den ydre, lidt hvælvede Flade 
af de smaa Kalkplader er en yderst liden Knop, hvortil 
en Pig er fæstet, Fig. 14, b. 
Farven gulrød. 
Findested. 
Station 195. Et Exemplar. 
Den norske Nordhavsexpedition. Danielssen og Koren. Asteroidea. 
The madreporite is somewhat oblong, and is situated 
immediately, without, the anal aperture (Pl. VI, fig. 11). 
The rays are rather round, and are about 2”” thick 
at their origin. Their spines are arranged in the same 
manner as on the disk, but the meshes are more regular, 
and, especially on the lateral surfaces of the rays, form 
longitudinal series. An embedded tentacular pore is vis- 
ible in each mesh. These series of tentacular pores are 
visible on the entire abactinal surface, right from the disk 
to the distal extremity (Pl. VII, fig. 12). 
The margin of the rays has two series of spines, of 
which, one pertains to the abactinal surface and the other 
to the actinal surface. The dorso-marginal spines are 
short and blunt (Pl. VII, fig. 12). The ventro-marginal 
spines are longer, and more acuminate than the dorsal 
spines, and are placed right opposite to these (Pl. VII, 
fig. 13). 
The actinal surface is flat; and the ambulacral furrow 
is narrow, and furnished with two series of cylindrical 
suckers free from spicule; and, also, with three series of 
aculeated spines, of which, those in the inmost series are 
the longest, and include half the width of the furrow (PI. 
WIOL, ie, UB), 
Between the exterior series of ambulacral spines and 
the ventro-marginal spines, a series of blunted spines is 
visible on the diskal part of the ray (Pl. VII, fig. 13, a). 
The interbrachial space is narrow, and beset with blunted 
spines, which appear to form a couple of transverse series 
(PL, WIL, ite, 1S Os 
The oral plates have 2 strong teeth situated on the 
interior of their rounded margin (Pl. VII, fig. 13, c), and 
upon the lateral margins, they have 3 long aculee (Pl. VII, 
fig. 13, d), and these so interlace with each other, that 
they permit the mouth to close completely to (Pl. VII, 
img, US), 
The abactinal dermal skeleton consists, of a calcareous 
reticulation haying very wide meshes, produced by small, 
somewhat oblong, narrow, calcareous plates, laminating on 
the extremities of each other (PI. VII, fig. 14, a); 
thereby producing longish rods, which unite, and form the 
reticulation (Pl. VII, fig. 14). On the somewhat arcuated, 
exterior surface of the small calcareous plates, an ex- 
tremely small knob occurs, to which there is secured a 
spine (Pl. VII, fig. 14, 0). 
The colour is orange. 
Habitat. 
Station No. 195. One specimen. 
