Armene ere forholdsvis noget korte og have paa de- 
res Ende 3 lange, konisk tilspidsede, takkede Pigge, hvoraf 
en undgaar fra Ryggen og to fra Siderne, Fig. 16, 19. 
Disse Pigge have paa deres Grunddel en liden rund, ud- 
hulet Ledflade, der svarer til en knopformig Ledflade paa 
Ocellerpladen og de yderste, ventrale Randplader.  Paxil- 
larfeltet paa den bredeste Del af Armen er 2”” bredt. 
To Rækker tydelig udpregede Randplader, der ere 
ten) to) 9 
skilte ved Sømme, og som staa lige overfor hverandre, Fig. 
17. I enhver Række 18—20. 
De dorsale Randplader ere indimod Armvinkelen 1”” 
brede og 0.5”” hoie, men aftage især i Bredden, efterhaan- 
den som de nærme sig Armens Spids. Deres Rande ere 
glatte, og Fladen er besat med 2—4 Rekker fine Korn. 
De ventrale Randplader have samme Form som de 
dorsale. Saavel disse som de ventrale have en næsten 
lodret Stilling, strække sig ikke ind paa Dorsal- eller Ven- 
tralfladen og ere uden Torne. 
Bugtladen er næsten plan, med en meget vid Mund- 
aabning. Bugfuren, der er temmelig smal, har 2 Rækker 
konisk tilspidsede Fødder uden Spikler og er langs Ran- 
den forsynet med en Række lange, spidse Ambulacralpigge, 
der paa den indre Totrediedel naa omtrent til Midten af 
Furen, Fig. 19,4, men paa den yderste Trediedel gaa næ- 
sten over til Furens modsatte Rand, Fig. 19, 0, og have 
paa hver Side af deres brede Basis 1 og 2 smaa Papiller, 
Fig. 19,c. Kun Adambulacralpladen nærmest Mundpla- 
den har ingen Pig men 6 Rækker smaa Papiller; Fig. 
19, d. Feltet imellem Ambulacralpiggene og de ventrale 
Randplader er besat med smaa, korte, stumpe, enkeltstaa- 
ende, fladtrykte Pigge, Fig. 19, e. Interbrachialrummene 
ere ligeledes besatte med lignende Pigge, men her staa 
de tildels i Grupper, der have en Tendens til at danne 
korte Rækker. 
Mundpladerne have 2 Rækker korte, stumpe Papiller 
paa hver Side af den dybe Midtfure, Fig. 19, f, ligesom 
de paa den mdre, afrundede Ende ere forsynede med 4 
korte, tykke, lidt fladtrykte og afstumpede Tænder, Fig. 19, g. 
Farven bleg gulrød med gulhvide Fodder. 
Findested. 
Station 87. Et Exemplar. 
Om denne hoist mærkelige Søstjerne, hvoraf vi des- 
verre have kun 1 Exemplar, kan der reises Tvivl, 
hvorvidt den virkelig er et fuldt udvoxet Dyr eller et Ud- 
viklingsstadium. De 3 Pigge paa Spidsen af Armene gjen- 
101 
The rays are somewhat short, proportionately, and 
upon their extremities, they carry three long, conical, acum- 
inate aculeated spines. One of these, projects from the 
abactinal surface, and one, from each of the lateral sur- 
faces (figs. 16. 19). These spines have, upon their basal 
part, a small, round, hollow, articulatory surface, correspond- 
ing with a knob-formed articulatory surface on the ocular 
plate and the outermost ventro-marginal plate. The pax- 
illar area on the broadest part of the ray is 2”” broad. 
There are two series of distinctly prominent marginal 
spines, separated by sutures, and placed right opposite to 
each other (fig. 17). 
18—20 plates. 
In towards the brachial angle, the dorso-marginal plates 
are 17” broad, and 0.5" thick, but, gradually, diminish in 
size, and, especially, in breadth, as they approach to the 
tip of the ray. Their margins are smooth, and the surface 
is beset with 2—4 series of minute grains. 
In each of these series, there are 
The ventro-marginal plates have the same form as 
the dorso-marginal plates, and both of them are placed in 
nearly vertical position, and do not extend in, upon either 
the dorsal or ventral surface. They are also free from 
aculeæ. 
The actinal surface is nearly flat, and it has a very 
wide oral aperture. The ventral furrow is rather narrow, 
and it is furnished with two series of conical, acuminate 
suckers, free from spiculæ; and it is, further, furnished 
along its margins, with a series of long acuminate ambul- 
acral spines, which upon the inner two-third parts, extend 
nearly to the middle of the furrow (fig. 19, a), but, upon 
the outer third part, extend, nearly to the opposite margin 
of the furrow (fig. 19,0), and on each side of their broad 
base, have 1 and 2 small papille (fig. 19, c). * Only the 
ambulacral plate next to the oral plate, is without a spine, 
but is furnished with 6 series of small papillæ (fig. 19, d). 
The area between the ambulacral spines, and the ventro- 
marginal plates, is beset with small, short, blunt, solitary, 
flattened spines, but in this situation, they are placed, 
partly, in groups, which have a tendency to form short 
series. 
The oral plates have two series of short blunt pap- 
illæ, on each side of the deep mesial furrow (fig. 19, f), 
whilst, they are, also, furnished on the inner rounded ex- 
tremity, with four short, thick, slightly fiattened, and blunt 
teeth (fig. 19, g). 
The colour is pale yellowish-red, with yellowish-white 
suckers, 
Habitat, 
Station No. 87. One specimen. 
In regard to this highly remarkable starfish, of which, 
we have, unfortunately, only a single specimen, a doubt may 
he expressed, as to whither it is a fully developed animal, 
or one in a stage of development. The three spines upon 
