Full resolution (JPEG) - On this page / på denna sida - Sidor ...
<< prev. page << föreg. sida << >> nästa sida >> next page >>
Below is the raw OCR text
from the above scanned image.
Do you see an error? Proofread the page now!
Här nedan syns maskintolkade texten från faksimilbilden ovan.
Ser du något fel? Korrekturläs sidan nu!
This page has never been proofread. / Denna sida har aldrig korrekturlästs.
•28
aftager den successivt, er næsten ganske rund, saa at den
op imod den skedeformige Udvidning er knap 8""" bred.
Fra den stærke Udvidning paa den bulbøse Del begynder
Stilkens spiralformige Dreining, der fortsættes gjennem hele
Længden, en Dreining, der især er stærkt fremtrædende
paa Spiritusexemplaret. Den skedeformige Udvidning er
spiraldreiet, Fig. 25, a, 150""" lang, 20""" bred, hvor den
gaar over i Rachis; den er overalt tæt besat med Zooider,
der sidde mere spredte, jo længere de komme ned paa
Stilken. Ogsaa paa den øverste Del a,f det bulbøse Parti
sees lignende Zooider.
Rachis er bægerformet, næsten rund, Fig. 25, ft, 38"""
høi, dens øverste Omkreds 150""". Bredden omtrent 48""".
VentralHaden er kort, lidt fladtrykt, tæt besatgméd Zooider.
Dorsalfladen smelter saagodtsom sammen med
Lateralfladerne, og samtlige ere overalt optagne af Zooider, som
danne lancetformige Felter imellem Polyperne, der
tilsyneladende staa i Kredse rundt Rachis, men som ved nøiere
Granskning vise tydelig Spor af en bilateral Stilling.
Terniinalpolypen er 30""" lang, 8""" tyk ved Grunden;
Tentaklerne ere 35""" lange, Fig. 25, 1*. Omtrent et Par
Mm. nedenfor og bagenfor i lige Linie sees en Polyp, hvis
Krop er 35""" lang, 8""" tyk ved Basis og med 40""n" lange
Tentakler, Fig. 25, 1; i samme Afstand fra denne Andes
en tredie Polyp af omtrent samme Størrelse som den
foregaaende, Fig. 25, 1. Disse 3 Polyper kunne betragtes som
de central-dorsale Polyper, idet de udgaa fra Midten af
den næsten horizontaltliggende, brede Rygflade. Omkring
dem gruppere sig 28 større og mindre Polyper saaledes,
at tilhøire er 15 og tilvenstre 13, dersom man tænker sig
Rachis inddelt i 1 Centraldel og 2 Sidedele.
Omtrent et Par Mm. tilhøire af de 3 Centralpolyper
staar i en liden Bue 4 Polyper, Fig. 25, 2, 2, 2, 2, der
ere næsten lige store; deres Krop er 35’"’" lang, 10""" tyk
ved Grunden, og Tentaklerne ere.45""" lange; udenfor og til
Siden af disse er 5 Polyper, hvoraf de 4 danne en svagt
krummet Linie, imedens den 5te staar for sig selv, Fig. 25, 3,
3, 3, 3, 3; de have den samme Størrelse som de
foregaaende 4, og endelig kommer den yderste Række,
bestaaende af 6 store Polyper, som alle ere næsten af samme
Størrelse; Kroppen er 45""" lang, 16’""’ bred ved Grunden
og Tentaklerne 35’"*" lange, Fig. 25, 4, 4, 4, 4, 4, 4.
Et Par Mm. tilvenstre at de 3 Centralpolyper staa i
en lidt krummet Række 3 Polyper, hvis Krop er 30""" lang,
10""" tyk, Tentaklerne 35""" lange, Fig. 25, 5, 5, 5.
Udenfor disse sees 2 Polypcr af samme Størrelse som de
nysnævnte 3, Fig. 25, 6, 6, og udenfor dem findes atter 2
Polyper, hvis Krop er 35’""’ lang, 10""" tyk, Tentaklerne
40’"’" lange, Fig. 25, 7, 7. Udenom disse 7 Polyper staar
thickness, upwards, until, it rather abruptly, becomes
enlarged and attains a circumference of 100""". It
subsequently diminishes, gradually, and becomes nearly round,
so that, up towards the sheath-formed dilation, it is barely
8""" broad. The spiral twisting of the stem commences,
at the large dilation of the bulbous part, and continues
through its entire length: — a twisting, which is especially
prominent in the specimen preserved in alcohol. The sheath
formed dilation is spirally twisted (Hg. 25, a), and is
150’""’ long, and 20""" broad at the point where it passes
over into the rachis. It is, everywhere, closely beset with
zooids, which however, become more dispersed, the further
down the stem they are situated. On the superior part of
the bulbous portion, similar zooids are also seen.
The rachis is chalice-formed, and nearly round (Hg.
25, b). It is 38""" high, and 150""" in circumference at
the upper part. The breadth is about 48’""’. The ventral
surface is short, somewhat flattened, and closely beset with
zooids. The dorsal surface becomes, almost fused into the
lateral surfaces, and, all of them are, everywhere, occupied
by zooids forming lanceolate areas between the polyps,
which, apparently, aix* situated in rings around the rachis,
but, upon closer inspection, show distinct signs of a
bilateral arrangement.
The terminal polyp is 30""" long, and 8""" thick at
the base, and the tentacles are 35’""’ long (fig. 25. I*). About
a couple of milimetres below and behind; in a straight
line; a polyp is observed, whose body is 35""" long, and
8""" thick at the base, and its tentacles 40’""’ in length
(fig. 25, 1). At a similar distance from that polyp, a, third
polyp is observed, of about the same size as the previous
one (fig. 25, 1). These 3 polyps may lie considered, as
the centro-dorsal polyps, because, they proceed from the
middle of the nearly horizontal, broad, dorsal surface.
Round about them; 28, larger or smaller polyps, are
grouped in such manner, that there are 15 polyps to the right,
and 13 polyps to the left, if we suppose the rachis
subdivided, into a central portion, and 2 lateral portions.
About a couple of millimetres to the right of the 3 central
polyps; 4 polyps are seen, situated in a small arc (fig. 25, 2,
2, 2, 2). These are nearly uniform in size, and their body is
35 mm long, and 10’""’ thick at the base, and the tentacles 45» """
in length. Outside of these, and to the side, there are 5
polyps; 4 of which, form a gently curved line, whilst the
5"’ is situated by itself (fig. 25, 3, 3, 3, 3, 3). They are
the same size as the previously mentioned 4 polyps; and,
finally, we have the exterior series, consisting of 6 large
polyps that are nearly uniform in size. The body of
these polyps is 45’"’" long, and 16""" broad at the base,
and the tentacles have a length of 35""" (fig. 25, 4. 4. 4. 4. 4, 4).
A couple of millimetres to the left of the 3 central
polyps; 3 other polyps are situated, in a slightly curved
series. Their body is 30""" long, and 10’"’" thick, and the
tentacles have a length of 35""" (fig. 25, 5, 5, 5).
Outside of these; 2 polyps of similar size as the 3 polyps
just-spoken of, are seen (fig. 25, 6, 6), and, outside of them,
still other 2 polyps are found, whose bodies measure,
<< prev. page << föreg. sida << >> nästa sida >> next page >>
