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101
Armene ere forholdsvis noget korte og have paa
deres 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,
udhulet Ledflade, der svarer til en knopformig Ledtiacle paa
Ocellærpladen og de yderste, ventrale Randplader.
Paxillarfeltet paa den bredeste Del af Armen er 2""" bredt.
To Rækker tydelig udprægede Randplader, der ere
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 0.5mm høie, men aftage især i Bredden,
efterhaanden som de nærme sig Armens Spids. Deres Rande ere
glatte, og Fladen er besat med 2—4 Rækkér fine Korn.
De ventrale Randplader have samme Form som de
dorsale. Saavel disse som de ventrale have en næsten
lodret Stilling, strække sig ikke intl paa Dorsal- eller
Ven-tralfladen og ere uden Torne.
Bugfladen er næsten plan, med en meget vid
Mund-aabning. Bugfuren, der er temmelig smal, har 2 Rækker
konisk tilspidsede Fødder uden Spikier og er langs
Randen forsynet med en Række lange, spidse Ambulacralpigge,
der paa den indre Totrediedel naa omtrent til Midten af
Furen, Fig. 19, a, men paa den yderste Trediedel gaa
næsten over til Furens modsatte Rand, Fig. 19, b, og have
paa hver Side af deres brede Basis 1 og 2 smaa Papiller,
Fig. 19, c. Kun Atlambulaeralpladen nærmest
Mundpladen 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, /, ligesom
de paa den indre, afrundede Ende ere forsynede med 4
korte, tykke, lidt fladtrykte og afstumpede Tænder, Fig. 19, g.
Farven bleg gulrød med gulhvide Fødder.
Findested.
Station 87. Et Exemplar.
The rays are somewhat short, proportionately, and
upon their extremities, they cany three long, conical,
acuminate aculeated spines. One of these, projects from the
abactinal surface, and one, from each of the lateral
surfaces (figs. 16. 19). These spines have, upon their basal
part, a small, round, hollow, articulatory surface,
corresponding with a knob-formed articulatory surface on the ocular
plate and the outermost ventro-marginal plate. The
paxillar area on the broadest part of the ray is 2mm broad.
There are two series of distinctly prominent marginal
spines, separated by sutures, and placed right opposite to
each other (fig. 17). In each of these series, there are
18—20 plates.
In towards the brachial angle, the dorso-marginal plates
are 1’"’" broad, and 0.5mm 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.
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
ambulacral 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, b), and on each side of their broad
base, have 1 and 2 small papillæ (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
papillæ, on each side of the deep mesial furrow (fig. 19, /),
whilst, they are, also, furnished on the inner rounded
extremity, with four short, thick, slightly flattened, and blunt
teeth (fig. 19, g).
The colour is pale yellowish-red, with yellowish-white
suckers.
Habitat.
Station No. 87. One specimen.
Om denne høist mærkelige Søstjerne, hvoraf vi
desværre have kun 1 Exemplar, kan der reises Tvivl,
hvorvidt den virkelig er et fuldt udvoxet Dyr eller et
Udviklingsstadium. De 3 Pigge paa Spidsen af Armene gjen-
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
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