Artskarakter. 
Svava glacialis opnaar en Størrelse af indtil 100 ””, 
Stokken er stiv. Rachis længere end Stilken, bærer paa 
hver Side af Dorsalfuren 12—16, Rækker udviklede Poly- 
per, 4 i hver Række. Cellerne ere påa deres fri Rand forsy- 
nede med 8 yderst smaa, bløde Papiller. Under hver Cel- 
lerad 4 smaa, runde Zooider. Stokken ender i en aflang 
Bulbus. Axen danner en stor Anse, 6—8”” fra Stilkens 
Bund og ender haarfint 1 Dorsalkanalen. Ventralfladen 
uden Zooider. Stokken gulhvid; Celler og Polyper næsten 
hvide. 
Diibenia borealis, n. sp. 
Tab. IT, Fig. 1—7. 
Af denne Søfjær blev kun fundet antageligt den øver- 
ste Halvdel, der er 50”” lang. 
Stokken er tynd, stiv, rund og fattig paa Polyper; 
dens øverste Ende er blottet for Sarcosoma i en Udstræk- 
ning af omtrent 5””, Fig. 1. 
Ventralsiden er næsten flad og har paa Midten en 
Fure, som er dyb der, hvor en paalangs gaaende Zooide- 
række paa hver Side omgiver de tilstødende Finner, Fig. 
1. 2. Dorsalsiden er rund; kun paa de Steder, hvor Fin- 
nerne mødes, er der en fin Fure, Fig. 3. 
Finnerne ere rudimentære, 0,081”” brede men neppe 
saa lange og skjules fuldkommen af Kalkpladen. De sidde 
paa Dorsalfladen og Siderne afvexlende over for hinanden, 
Fig. 3; men Afvexlingen er meget utydelig, saa at det fra 
Ventralsiden ser ud, som om de sidde lige over for hinan- 
den, Fig. 2. Fra det ene Par Finner til det andet er et 
Mellemrum af 15””, og over hver Finne er en Gruppe af 
Zooider, hvortil de før omtalte Zooiderækker støde. 
Kalkpladen, der støtter og skjuler den rudimentære 
Finne, er foroven 1,23”” bred; dens nederste Ende, der 
gaar over 1 Stokkens Sarcosoma, er kun 0,027”” bred, 
Fig. 4. Den bestaar af længere og kortere Kalkstave, 
hvoraf de yderste ere de længste og tykkeste, nemlig 2,5”” 
lange og 0,019”” brede nedimod den nederste Ende, der 
er smalere og noget tilspidset, Fig. 4, a. Kalkstavene ere 
bundne sammen ved en fast Bindeveevsmembran, Fig. 4,0, 
men deres fritragende, lange Spidser ere ganske nøgne. 
Hver Finne bærer 2 Polyper, der ved deres nederste 
Del ere sammenvoxede. De ere eylindriske, ikke retrak- 
Den norske Nordhavsexpedition. Danielssen og Koren: Pennatulida. 
Specific Character. 
Svava glacialis attains a size of up to 109”” in length. 
The stalk is erect. The rachis is longer than the stem; 
and carries on each side of the dorsal furrow, 12—16 
The free 
margin of the cells, is furnished with 8 extremely small, soft 
papillæ. 
series of developed polyps, 4 in each series. 
Below each cellular series, 4 small round zooids. 
The stalk termimates in an oblong bulb. The 
a large hook, 6—8”" from the base of the stem, 
terminates, fine as a hair; in the dorsal canal. The ven- 
tral surface is free from zooids. The stalk is yellowish 
white. he cells and polyps almost white. 
axis forms 
and 
Diibenia borealis, n. sp. 
PIL 105, fe, 7 
Of this sea-pen, only, what may be supposed to be 
the upper half portion was found, 
507” in length. 
The stalk is thin, erect, round, and poorly furnished 
with polyps; it's upper extremity is devoid of sarcosoma, 
for an extent of about 5”” (fig. 1). 
The ventral side is nearly flat, and, in the middle, 
has a furrow, which is deep at the point where a longi- 
tudinal zooidal series on each side surrounds the abutting 
fins (figs. 1. 2). The dorsal side is round, and only, at 
the points where the fins are met with, is there a slender 
furrow (fig. 3). 
The fins rudimentary, measuring 0.081”” in 
breadth, and scarcely so much in length, and they are 
completely concealed by the calcareous plate. They are 
seated on the dorsal surface and the sides, alternately, 
and this measures 
are 
opposite each other (fig. 3), but the alternation is so very 
indistinct, that from the ventral side, it appears as if they 
were placed right opposite each other (fig. 2). From the 
one pair of fins to the other, there is an interval of 15””, 
and above each fin, there is a group of zooids, upon which 
the previously mentioned series of zooids abut. 
The calcareous plate which supports and conceals the 
rudimentary fin, is 1.23”” broad, above; whilst the lower ex- 
tremity, which passes over into the sarcosoma of the stalk, 
is only 0.0277” broad (fig. 4). It consists, of longer or 
shorter calcareous rods, of which the external ones are the 
longest and thickest; viz. 2.5”” in length and 0.019”” in 
breadth, down towards the inferior extremity, which is 
narrower and somewhat acuminate (fig. 4,a). The calcar- 
eous rods are bound together by a firm connective-tissue 
membrane (fig. 4, b) but their free, long, projecting points 
are quite bare. 
Each fin carries 2 polyps, which are conereted at 
their lower parts. non-retractile, 
9 
a 
They are cylindrieal, 
