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36
hos hvem clen bilaterale Symetri er paa saa god Vei til
at forsvinde, som just hos denne, og havde man ikke
kunnet forfølge den fra de tidligere Udviklingsstadier, skulde
man let have overseet den ganske paa dette Exemplar.
Ved Polyperne er intet Særegent at iagttage fra de
Foregaaende. Samtlige Polyper have udviklede
Kjønsor-ganer og ere Hanner.
Axen som paa de tidligere omtalte Exemplarer.
Hele Stokken er overtrukken med et tykt, gelatinøst
Slim, der er bunden til Epithelet, saa at det ene ikke kan
fjernes uden det andet.
Farven som paa No. 10.
Findested.
Station No. 31.
in which the bilateral symmetry is in such a fair way to
disappear, as in this one; and if we had not been able
to trace it from the earlier stages of development, we
might, easily, have completely overlooked it in this
specimen.
There is nothing, specially, differing from the
preceding specimens, to be remarked in regard to the polyps of
this one. All the polyps have, developed sexual organs,
and are males.
The axis is similar to that of the specimens
previously spoken of.
The entire stalk is coated with a thick gelatinous
mucous, which is so adherent to the epithelium, that the
one, can not be removed without the other following along
with it.
The colour is similar to that of No. 10 specimen.
Habitat.
Station No. 31.
No. 12.
Tab. VJir, Fio\ ’28.
Stilken fra Grunden til Rachis er 2270""" lang. Den
bulbøse Del er 400""" lang og er omtrent lige tyk overalt,
omkring 5mra i Omkreds. Dens nederste Halvdel er rund
og har en konisk afstumpet Ende; den øvre Del er næsten
firkantet, og her begynder Stilken allerede at dreie sig
efter Længden i lange Spiraler, der blive kortere, jo
længere de komme op paa Stilken, saa at den skedeformige
Udvidning, der er 180""" lang, 15’"’" bred, er 3 Gange
dreiet, Fig. 28, a. Stilken er kun 4""" tyk op imod den
skedeformige Udvidning, der er tæt besat med Zooider,
som forlænge sig nedover Stilken til omtrent Midten af
den bulbøse Del.
Rachis er stærkt fordreiet, næsten rund, lidt aflang
forfra bagtil, 120’""’ i Omkreds, 36’"’" høi, 35""" bred og
bærer 40 Polyp er. Kun en fin Linie antyder VentralHaden;
forresten er hele den øverste Del besat med Polyper.
medens den nederste, bægerformede Del, danner 8
lancet-forniige Zooidofelter, der strække sig op imellem de
laterale Polyper og udbrede sig overalt paa Rachis, Fig. 28.
Paa den udvidede Rachis omtrent paa Midten af
Dorsalfladen, lidt til Venstre, staa i en ret Linie forfra
bagtil 3 central-dorsale Polyper, Fig. 28, 1, 1, 1, af hvilke
den forreste er Terminalpolypen, hvis Krop er 25’"’" lang,
4"’m bred og med 24""" lange Tentakler, Fig. 28, 1*; den
mellemste er 34""" lang, 5mm bred med 25""" lange Ten-
No. 12 specimen.
Pl. VIII. fig. 2«.
The stem measures 227(1""" in length from the base to
the rachis. The bulbous part is 400""" long, and it’s thickness
is nearly uniform throughout; whilst, the circumference is
about 5""". It’s inferior half portion is round, and has a
conical blunted extremity. The upper part is nearly
quadrangular, and, already, at this point, the stem begins
to twist itself longitudinally, in long spirals, which
diminish in length, the further up the stem they extend, so
that, the sheath-formed dilation, which is 180""" long, and
15’""’ broad, is 3 times twisted (fig. 28, a). The stem is
only 4""" thick in proximity to the sheath-formed dilation; this
is closely beset with zooids; these extend themselves down,
along the stem, to about the middle of the bulbous part.
The rachis-is strongly twisted, nearly round, and slightly
oblong from front to back, and measures 120""" in
circumference, 36’"’" in height, 35’"’" in breadth; it carries 40
polyps. A minute line is all that denotes the ventral
surface; otherwise, the entire superior part is beset with
polyps, whilst, the inferior chalice-formed part, forms 8
lanceolate zooidal areas, which extend themselves up
between the lateral polyps, and spread themselves all over
the rachis (fig. 28).
On the dilated rachis; about the middle of the dorsal
surface, and a little to the left; 3 centro-dorsal polyps
(fig. 28, I, 1, 1) are situated, in a straight line from front
to back. The anterior one of these, is the terminal polyp,
and it’s body is 25""" long and 4’""’ broad; the
tentacles are 24’"’" long (fig. 28, 1*). The intermediate polyp
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