fladen, temmelig smal og lidt konkav, tæt besat med Zooi- 
der, der strække sig lancetformigt imellem Polyperne mod 
Ventralfladen, Fig. 10,a. Sidefladerne ere næsten imaginære. 
Rachis bærer 7 udviklede Polyper og 1 embryonal. 
Terminalpolypen sidder midt paa Dorsalfladen, noget un- 
der Enden af Rachis, Fig. 9, b. 10, 0*, dens Krop er 7”” 
lang, 37" bred; Tentaklerne ere lidt længere end Kroppen. 
Til hver Side af Terminalpolypen, paa Rygfladen, ud- 
springe 2 Polyper, der ere 10”” lange, 4”” brede, med 
15”” lange Tentakler, Fig. 9, c. 10, c. lige under Ter- 
minalpolypen, men lidt til høire Side af Rygfladen, sidde 
to mindre Polyper, den ene nedenfor den anden. Disse 
Polyper ere 7”” lange, 3”” brede; Tentaklerne lidt læn- 
gere end Kroppen, Tab. V, Fig. 9, d. Tab. VI, Fig. 10, d. 
Ved Grunden af Terminalpolypen sees en liden, rund, knop- 
formig Forhøming med en liden Aabning i Midten — en Polyp 
i Udvikling, Fig. 10, e. En lignende Knop, men noget 
større, iagttages imellem den nederste af de 2 smaa Poly- 
per og venstre Sidepolyp. 
Dorsalfladen af Rachis er saa fordreiet og 
neppe 3””s Længde kan sees, og fra dens Sider 
sig lancetformede Zooidefelter imellem Polyperne uden at 
gaa op paa disse. Af saadanne Felter er der 2 paa ven- 
stre og I paa høire Side. 
kort, at 
strække 
Polyperne ere ligesom paa de 2 foregaaende kon- 
traktile, udspringe umiddelbart fra Rachis, have en eylin- 
drisk, glat Krop, paa hvis udvendige Flade sees 8 Længde 
linier, som angive Insertionsstederne for Septa. Det lange, 
foldede Svælg skinner igjennem Kropsvæggen. 
Tentaklerne, Mundskiven, Munden og Læberne som 
hos No. 1 og 2. Axen ligesaa. 
Den bilaterale Symetri, som vi fandt saa stærkt ud- 
præget hos No. 1, er mindre fremtrædende hos No. 2 og 
endnu mindre hos No. 3, hvor det endog er noget van- 
skeligt at paavise den, da Rachis er saa fordreiet og ud- 
videt i Bredden, ja vi kunne gjerne sige saa uformelig, at 
det kun med Møie lader sig gjøre at ordne nogenlunde 
Polypernes Stilling. 
19 
with zooids (Pl. V, fig. 9, b). “The dorsal surface is, 
about half as long as the ventral surface; rather narrow, 
and somewhat concave; and closely beset with zooids, which 
extend themselves, in lancet form, between the polyps, 
towards the ventral surface (Pl. VI, fig. 10, a). The la- 
* teral surfaces are almost imaginary. 
The rachis carries, 7 fully developed polyps, and one 
embryonal polyp. The terminal polyp, is situated, in the 
middle of the dorsal surface, a little below the extremity 
Or Hoe mrdus (BL Wp ime, 9, Or Jeb VIL 10, br 168 loochy 
is 7” long, and 3”” broad. The tentacles are a little 
longer than the body. At each side of the terminal pol- 
yp, upon the dorsal surface, 2 polyps proceed; these are 
10”” long, and 4"” broad, with 15”” long tentacles (Pl. V, 
ime, @. @& lek, VIL IO, @), 
but, a little to the right side of the dorsal surface; 2 
small polyps are situated, one placed below the other. 
Just beneath the terminal polyp, 
These polyps are 7”” long, and 3”” broad, and the ten- 
tacles are somewhat longer than the body (Pl. V, fig. 9, d. 
Pl. VI, 10, d). At the base of the terminal polyp, a 
small, round, knob-formed protuberance is seen; haying a 
small aperture in the middle; this is a polyp in process 
of development (Pl. VI, fig. 10, e). A similar knob, but 
somewhat larger, is observed between the lowest of the 
two small polyps, and the left lateral polyp. 
The dorsal surface of the rachis is so twisted, and 
short, that barely 3”” of its length is visible; and from 
its sides, lancet formed zooidal areas extend themselves 
between the polyps, without, however, interfering with these. 
There are two such zooidal areas on the left side, and 
one on the right side. 
The polyps are, as was also the case, with the two 
previous specimens, contractile; and proceed immediately 
from the rachis. They have a cylindric, smooth body, 
upon whose exterior surface, 8 longitudinal lines are seen, 
denoting the points of insertion for septa. 
folded, 
body. 
The long, 
gullet, appears visible through the wall of the 
The tentacles, oral disk, oral aperture, and labiæ, are 
similar to these parts in No. I and 2 specimens. The 
axis is also similar. 
The bilateral arrangement which is found so dis- 
tinctly marked in No. I specimen, is less prominent in 
No. 2 specimen, and still less, in No. 3 specimen; where, 
it is, even, somewhat difficult to point it out, owing to the 
rachis being so twisted and expanded in breadth; indeed, 
we may say, itis so shapeless, that it is, only, with difficulty, 
that the position of the polyps, can be in any measure 
defined. 
