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11
smalner noget af opad mod den temmelig brede,
afstumpede Ende og nedad mod Stilken, Fig. 17. 18.
Dorsalfladen er lidt hvælvet og paa dens nederste
Del iagttages Enden af en noget dyb Fure, der strækker
sig i en Bøining omtrent 20""" langt nedover Stilken, Fig.
17. Ovenfor denne Fure udspringe Polyperne saaledes, at
de danne 3 Længderækker. I den midterste Række er
der 3 Polyper, hvoraf den mellemste staar lidt til Hoire.
Til Venstre sees 2 og til Høire 3 laterale Polyper.
Under den nederste Midtpolyp, lidt til Siden, sees en
uudviklet Polyp, og en lignende findes ogsaa under de høire
Sidepolyper.
Dorsalfladen er besat med store, konisk
fremspin-gende Zooider, som paa dens øverste Del staa meget tæt
sammen, imedens de forøvrigt ere noget spredte og mangle
ganske paa de aflange Felter, hvor Polyperne udspringe,
Fig. 17. Disse Felter betegne egentlig den ydre Væg af
Polypcellen, som er aflang, nedsænket i Sarcosomaet og
skjuler ganske Polypen, naar den er indtrukken og
danner da en aflang Fremstaaenhed med en stjerneformig
Aabning paa dens øverste Del.
Ventralfladen har en dyb, temmelig bred Fure, der
er nøgen i Bunden, hvor Axen skinner igjennem, men er
til Siderne forsynet med Zooider, Fig. 18. Bugfuren er
3f)mm lang, ophorer 10""" fra øverste Ende og strækker sig
langt nedover Stilken. Den er ganske lidet krummet efter
Længden og dens tykke Rande ere besatte med Zooider,
Fig. 18.
Paa hele Ventralfladen sees Zooider, der paa de
nederste 2/;j Dele ere ordnede i 2—3 uregelmæssige
Længde-rækker langs Bugfuren, imedens de paa den øverste Del
indtage hele Fladen, Fig. 18, staa meget tæt sammen og
støde til Dorsalfladen, saa at det øverste Parti af Racliis,
der er frit for Polyper, faar et stærkt papilløst Udseende,
Fig. 18.
Stilken er næsten rund, 44""" lang og ender i en
aflang Blære. De paa Racliis beskrevne Furer fortsættes
nedover Stilken saavel paa Dorsal- som paa Ventralfladen
indtil omtrent 25""" fra Endeblæren, og paa hver af deres
Sider sees en Række enkeltstaaende Zooider, der rage kun
ganske lidet opover Fladen.
Polyperne er cylindriske, gjennemsigtige, 18—20’""’
lange. Deres Krop er 8—10""" lang med 8 ophøiede
Linier, dannede af Spikier, som ligge pakkede paa hverandre
i en Længderække og ere 0,357""" lange, 0,018""" brede
samt takkede i begge Ender. Imellem disse Ribber er
Huden forsynet med lignende Spikier; men her ligge de
enkeltvis og have en skraa Retning. Tentaklerne ere
10—12™m lange, have paa Midten af tieres aborale Flade
en langsgaaende Ra>kke store, trekantede Spikier, som ere
0,577""" lange, 0,089""" brede og takkede i Enderne. Den
whence, it becomes somewhat narrower, upwards, towards
the rather broad, blunted extremity; and, downwards,
towards the stem (fig. 17. 18).
The dorsal surface is a little arched; and on its
inferior part, the extremity of a somewhat deep furrow is
observed, extending in a curvature, about 20""", down along
the stem (fig. 17). Above this furrow, the polyps project
in such a manner, that they form 3 longitudinal series.
In the middle series, there are 3 polyps, of which, the
median one, is placed a little to the right. To the left,
two, and to the right, three, lateral polyps are seen.
Below the inferior median polyp, and a little to the side,
an undeveloped polyp is seen, and a similar one is seen
below the right lateral polyps.
The dorsal surface is beset, with large, conical,
protuberant zooids, which upon its superior portion are
situated very closely together, whilst, elsewhere, they are
somewhat scattered, and are entirely devoid of the oblong
areas where the polyps protrude (fig. 17). These areas,
really, denote the outer Avail of the cell of the polyp;
this is oblong, and depressed in the sarcosoma, and
quite conceals the polyp, when it is retracted; but it then
forms an oblong protuberance, with a stellate aperture on
the upper part.
The ventral surface has a deep, rather broad furrow,
which is bare at the bottom, where the axis appears
visible through it, but is furnished with zooids on it’s sides
(fig. 18). The ventral furrow is 30"™ long, and
terminates 10""" from the superior extremity, and extends far
down the stem. It is quite slightly curved longitudinally;
and it’s thick margin is beset with zooids (fig. 18).
Oil the entire ventral surface, zooids are seen; which
on the lower 2/3nl parts, are arranged in 2—3 irregular,
longitudinal series along the ventral furrow; whilst, upon
the upper part, they occupy the whole surface, (fig. 18).
and are placed very closely, together, and abut upon the
dorsal surface, so, that the superior portion of the racliis.
which is devoid of polyps, acquires a prominent papillons
appearance (fig. 18).
The stem is almost round, and is 44""" long, and
terminates in an oblong vesicle. The furrows described as
pertaining to the racliis, are continued down the stem, both
along the dorsal and the ventral surface, until about 25"""
from the terminal vesicle; and on each of their sides, a
series of isolated zooids is seen, which only project a very
little beyond the surface.
The polyps are cylindrical and translucent, 18—20m"’
long. Their body is 8—10""" long, and has 8 elevated
lines formed of spiculæ, which lie, packed upon each other in
a longitudinal series, and measure 0.351""" long, and 0.018"’"’
broad, and are aculeated at both the extremities. Between
these ribs, the integument is furnished with similar
spiculæ, but here, they are placed singly, and in a diagonal
direction. The tentacles are 10—12""" long, and have a
longitudinal series of large triangular spiculæ, situated in
the middle of their aboral surface; these are 0.577""" long,
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