ganske udfyldte af Kalkklumper; igjennem de aabne Ma- 
sker passere et eller flere Tentakelror. 
De Plader, der kunne betragtes som dorsale Randpla- 
der, ere 26 i Antal, have en irregulær, næsten trekantet 
Form og ere paa deres stærkt hvælvede, ydre Flade for- 
synede med en rund Fordybning, der udgjør Leddefladen 
for den Pig, den bærer. 
De Kalkplader, der kunne betragtes som ventrale Rand- 
plader, og som bære den lange Pig, der hjælper til at danne 
Pigrækken strax udenfor Furepapillerne, ere 32 i Antal, 
have en krumbøiet Form og fæste sig ved et stærkt Liga- 
ment umiddelbart til Adambulacralpladernes underste Rand, 
lige udenfor Furepapillernes Befæstningspunkter. Paa den 
øverste, brede Flade af Randpladerne, hvilken vender mod 
Kropshulheden, fæster sig et lille, næsten gaffelformigt Kalk- 
stykke, der med sine Apophyses fæster sig til den ydre 
Rand af 2 Adambulacralplader, Tab. III, Fig. 9, b, c. 
De ventrale Randplader staa langt fra hverandre, saa at i 
Regelen 4 Adambulacralplader optage det Rum, som er 
imellem 2 Randplader.  Imellem de dorsale og ventrale 
Randplader er et smalt, langstrakt Kalkstykke. 
Odontophoren bestaar af to Kalkstykker, der ere for- 
enede ved et Ligament, Tab. III, Fig. 9, d.  Saavel paa 
Adoral- som Aboralsiden er et dybt Indsnit. Paa dens 
indre: Side er paa Midten en liden Fremstaaenhed. 
Adambulacralpladerne ere halvrunde, skiveformige. Den 
adorale Flade har en stærk Kam paa Midten, den aborale 
er jævn konkav; den øverste Rand er tvers afskaaren, den 
underste og ydre Rand er konvex. Hver Adambulacral- 
plade bærer to stærke Pigge, hvoraf den yderst staaende 
er længst. 
Ambulacralaabningerne ere noget uregelmæssigt stil- 
lede nærmest Skiven, Tab. III, Fig. 9. 
Farven høirød paa Ryggen, hvidgul paa Bugen. 
Findested. 
Station 374. Advent-Bay, Spitsbergen; kun nogle Ex- 
emplarer. 
Artskarakter. 
Forholdet imellem den lille og store Radius som 1: 
51/3. Skiven bred med faa enkeltstaaende Pigge; 5 tykke 
Arme, paa hvis Ryg 5 Rækker stærke Pigge, der ere 
krandsformig omgivne af korsdannede Pedicellarier. Tem- 
melig spredte, ligedannede Pedicellarier indtage hele Ryg- 
gen. Paa Siden af Armene en Række stærke Pigge, 26 i 
Antal, omgivne af korsdannede Pedicellarier. To Rækker 
Ambulacralpapiller, hvoraf de i den yderste Række ere 
lengst. Udenfor Ambulacralpapillerne en Række stærke, 
lange Pigge, 32 i Antal, halvomsluttede af korsformige Pe- 
dicellarier. Hudskelettet stærkt bygget. Farven paa Ryg- 
gen høirød. Pedicellarierne, der omgive Piggene, danne 
hvide Duske. Bugen bleg, hvidgul. 
Den norske Nordhavsexpedition. Danielssen og Koren: Asteroidea. 
ones are nearly closed up with calcareous deposit: one, or 
more, tentacular tubes pass through the open meshes. 
The plates which may be considered to be dorso- 
marginal plates, are 26 in number, and have an irregular 
nearly tri-lateral form; upon the sharply arched exterior 
surface, they are furnished with a circular cavity, which 
forms the articulatory surface for the spine which it carries. 
The calcareous plates which may be considered to 
be ventro-marginal plates, and which carry the long spines 
that assist in forming the spinous series immediately out- 
side the furrow-papille, are 32 in number. They have a 
curved form, and, are attached by a strong ligament, close 
to the inferior margin of the adambulacral, plates, just 
outside the points of attachment of the furrow-papille, On 
the superior broad surfaces of the marginal plates, facing 
towards the body cavity, a small nearly bi-furcate calcareous 
ossicle is attached, which adheres by its apophyses to the 
exterior margin of 2 adambulacral plates, (Pl. III, fig. 9, 
b, c). The ventro-marginal plates are placed at a consider- 
able interval from each other, so that, as a rule, 4 adam- 
bulacral plates occupy the space between 2 marginal plates. 
Between the abactinal and actinal marginal plates, there oc- 
curs an elongate, narrow, calcareous ossicle. 
The odontophore consists of two calcareous ossicles 
united by a ligament, (Pl. III, fig. 9, d). On both, the 
adoral and aboral surfaces, there is a deep incision. On 
the inner surface, a small mesial protuberance occurs. 
The adambulacral plates are semicircular and discoidal 
in shape. The adoral surface has a strong mesial ridge; 
the aboral surface is uniformly concave; the suporior margin 
is truncated; the inferior, (exterior) margin is convex. Hach 
adambulacral plate carries two strong spines, of which the 
external one is the longest. 
The ambulacral openings are somewhat irregularly 
placed, contiguous to the disk (Pl. ITI, fig. 9). 
The colour of the abactinal surface is deep-red, and 
of the actinal surface, whity-yellow. 
Habitat. 
Advent Bay, Spitzbergen. Station 374. Å few speci- 
mens only. 
Specific Character. 
The proportion between the disk-radius and the brachial 
radius is as 1:5*/5. The disk is broad, and occupied by a- 
few solitary spines: 5 thick rays carrying 5 dorsal rows of 
strong spines, environed by wreaths of cruciform pedi- 
cellariæ. Rectiform pedicellariæ somewhat dispersed, occupy 
the whole abactinal surface. The rays carry laterally, a 
series of strong spines, 26 in number, which are environed 
by cruciform pedicellariæ. Two series of ambulacral papillæ, 
of which, those in the exterior series are the longest. Out- 
side the ambulacral papillæ, a series of long, strong spines, 
32 in number, semi-enclosed by cruciform pedicellariæ. The 
dermal skeleton strongly constructed. The abactinal colour, 
deep-red. The pedicellariæ which environ the spines form 
white tufts. The actinal colour, pale whity-yellow. 
9) 
