hos hvem den bilaterale Symetri er paa saa god Vei til 
at forsvinde, som just hos denne, og havde man ikke kun- 
net 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. 
No. 12. 
Tab. VIII, Fic. 28. 
Stilken fra Grunden til Rachis er 2270”” lang. Den 
bulbøse Del er 400”” lang og er omtrent lige tyk overalt, 
omkring 5”” i Omkreds. Dens nederste Halvdel er rund 
og har en konisk afstumpet Ende; den øvre Del er nesten 
firkantet, og her begynder Stilken allerede at dreie sig 
etter Længden i lange Spiraler, der blive kortere, jo læn- 
gere 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”” 1 Omkreds, 36”” hoi, 35”” bred og 
bærer 40 Polyper. Kun en fin Linie antyder Ventralfladen ; 
forresten er hele den øverste Del besat med Polyper, 
medens den nederste, bægerformede Del, danner 8 lancet- 
formige Zooidefelter, der strække sig op imellem de late- 
rale 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, 
47" bred og med 24”” lange Tentakler, Fig. 28, 1*; den 
mellemste er 34”” lang, 5” bred med 257” lange Ten- 
36 
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 spec- 
imen. 
There is nothing, specially, differing from the preced- 
ing 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 prev- 
iously 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 specimen. 
Pl. VITT, fie. 28. 
The stem measures 2270”” 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 dimin- 
ish 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 rachisvis strongly twisted, nearly round, and slightly 
oblong from front to back, and measures 120”” in circum- 
ference, 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 be- 
tween 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. 1, 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 925”” long and 4”" broad; the ten- 
tacles are 24”” long (fig. 28, 1*). The intermediate polyp 
