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12
øvrige Del af Tentakelen tilligemed de temmelig langt fra
hinanden staaende Pinnuler ere rige paa Kalkspikler, der
ere af Fonn som de paa Kroppen, 0,123""" lange, 0,012"""
brede. Mundskiven er hvælvet og- i Midten er den aHange
Mundaabning. Ogsaa Mundskiven er forsynet med lignende
Spilder som clo paa Kroppen.
Zooiderne ere krandsformigt omsluttede af Spilder,
der rage udover Zooidens Mundaabning, ere trekantede,
have takkede Ender og ere 0,300""" lange, 0,024""" brede.
Sarcosomaet er paa Rachis meget tyndt, halvt
gjennemsigtigt, og her ligge Spiklerne næsten bundtevis paa
hverandre; de have samme Fonn som de tidligere omtalte,
ere fra 0,310—0,357""" lange og fra 0,012—0,018""" brede,
Fig. 19. I Stilken er Sarcosomaet tykkere, opakt, og
Spiklerne ligge her meget mere kompakte end i Rachis; de
ere fra 0,160—0,200""" lange, 0,018—0,024""» brede, ere
trekantede og ikke alene takkede i Enderne, men
Takkerne strække sig langt ned over Kanterne, Fig. 20.
Kalkaxen er rund, strækker sig lige ned i Bunden af
Endeblæren, hvor den gjor en Bøining, danner en Anse
og ender haarfmt.
Farven.
Rachis er svag brungul, spillende noget i det
Violette. Stilken er næsten gulhvid. Polyperne bleg violette.
Efter nogen Tids Opbevaring i Spiritus forsvinder
Farven næsten ganske, saa at Exemplarerne ere
saagodtsom hvide.
Findested.
Station 9. Et Exemplar.
Af denne Søljær fandt vi for omtrent 12 Aar siden
i Korsfjorden (Haakonsund, 27 Km. fra Bergen) et
ud-voxet og et ganske ungt Exemplar. Den dybe Bugfure
tiltrak sig vor Opmærksomhed, men da vi antog dem for
Kopliobélemnon stélliferum, bleve de ikke nærmere
undersøgte. Ved nu at underkaste disse Exemplarer en nøiagtig
Granskning viser det sig, at de ere forskjellige fra Koph.
stélliferum og falde sammen med den nu beskrevne Koph.
dbyssorum. Dennes brede og korte Rachis, Stilkens
betydelige Længde i Forhold til Rachis og dens jævnt
tiltagende Tykkelse opimod denne, den dybe Bugfure ligesom
Rygfuren, de faa, i 3 Rækker stillede Polyper og deres
Størrelse ere Karakterer, der adskille Koph. abyssorum
ikke alene fra Koph. stélliferum men ogsaa fra de øvrige
kjendte Arter af denne Slægt.
Kophobélemnon abyssorum har en mere udpræget
bilateral Symetri end nogen af de bekjendte Kophobélemnid&r,
— bedst iagttages dette paa det unge Exemplar, hvor der
ogsaa findes en Endepolyp.
0.089""" broad, and are aculeated at the extremities. The
remaining part of the tentacle, and also, the tolerably
wide-apart pinules, are rich in calcareous spiculæ, of similar
form to those of the body, and measuring 0.123’""’ in length,
and 0.012""" in breadth. The oral disk is arched, and the
oblong oral aperture is situated in its middle. The oral disk,
is, also, furnished with similar spiculæ to those of the body.
The zooids are enclosed by wreaths of spiculæ,
which project beyond the oral aperture of the zooids, and
are triangular in shape, with aculeated extremities; and
■measure 0.300""" long, and 0.024""" broad.
The sarcosoma upon the rachis is very thin, and
semi-translucent, and in this situation, the spiculæ lie on
each other, almost in bundles. They have the same form
as those already spoken of, and measure from 0.310—
0.367""" long, and from, 0.012—0.018""" broad (lig. 19).
The sarcosoma is thicker in the stem, and is opaque; and
the spiculæ, here, arc much more compact than in the
rachis; they measure from 0.160—0.200""" in length, and
0.018—0.024""" in breadth; are triangular in form, and
not only arc they aculeated at the extremities, but the
aculeæ extend far down along the edges (fig. 20).
The calcareous axis is round, and extends right down
to the bottom of the terminal vesicle, at which point, it
makes a curvature; forms a hook; and terminates tine as
a hair.
Colour.
The rachis is light brown-yellow, tending somewhat
to violet. The stem is nearly yellow-white. The polyps
are pale-violet.
After being preserved in alcohol for some time, the
colour almost quite disappears, so that the specimens
become nearly white.
Habitat.
Station No. 9, one specimen.
About 12 years ago; we found in the Korsfjord,
(Haakonsund 27 Km. from Bergen), one full grown, and
one very young specimen of this sea-pen. The deep
ventral furrow attracted our attention, but, as we supposed
it to be Kopliobélemnon stélliferum, it was not particularly
examined. On now, however, subjecting these specimens to
a minute examination, it is evident, that they are different
from Koph. stélliferum and that they harmonise with the
Koph. abyssorum now described. The latter’s broad and
short rachis; the great length of the stem in relation
to the rachis; and the uniformly, increasing thickness of
the stem towards the rachis; the deep ventral furrow; also,
the dorsal furrow; the few polyps placed in 3 series, and
their size; are characteristics, which distinguish Kopli.
abyssorum, not only from Koph. stélliferum, but, also, from
the other known species of this genus.
Kophobélemnon abyssorum has a more marked
bilateral symmetry than any of the known Kophobelemnonidw.
This is best seen in the young specimen; where, also, a
terminal polyp is found.
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