afbildet i hans Reisebeskrivelse.! Dr. Marenzeller? anta- 
ger, ifølge Payers Tegning (selve Dyret blev tilbage paa 
det forulykkede Skib), det for sandsynligt, at dette Ex- 
emplar har været den ægte Umbellula encrinus; men no- 
gen fuld Sikkerhed haves ikke.  Stokkens Længde var 
6307", Challenger-Expeditionen har i Aarene 1873—76 
bragt frem i Dagen ikke mindre end 8 Arter af Slegten 
Umbellula, hvilke alle ere beskrevne af Professor Kélliker, * 
og hvoraf de 7 ere forskjellige fra Umb. encrinus, imedens 
den 8de, nemlig Umb. magniflora, efter alt at domme sy- 
nes at være identisk med den. Kølliker yttrer 1 saa Hen- 
seende Følgende: ,,The only specimen of this Umbellula 
brought home by the Challenger is in a very bad state of 
preservation; nevertheless it is of great interest, as it is 
the only known Umbellula which resembles the Umbellula 
of Ellis and Mylius so much, that it seems to be the same 
species, or at least to come very near it.“ 
Den norske Nordhavsexpedition har paa sine Under- 
søgelsesreiser, foretagne 1 Aarene 1876—78, samlet 12 
Exemplarer af Slægten Umbellula fra forskjellige Lokalite- 
ter og 1 forskjellige Udviklingsstadier; men alle kunne, 
som vi senere hen skulle paavise, henføres til Ellis's & 
Mylius's Art, — og da vort Material har været temmelig 
righoldigt, have vi ogsaa kunnet sammenholde enkelte Hx- 
emplarer med Lindahls to Arter, samt med Köllikers mag- 
niflora. Af denne Sammenstillen fremgaar, at ogsaa disse 
3 Arter maa identificeres med Umbellula encrinus, der ef- 
ter dette faar en stor geografisk Udbredning. 
Idet vi nu gaa over til at levere en Beskrivelse af 
hvert enkelt Exemplars Ydre for senere at fremstille den 
anatomisk-histologiske Bygning, der er fælles for dem alle, 
begynde vi med det mindste Exemplar og fortsætte numer- 
vis op til det største. 
No. 1. 
Meo We Iie, i, 2 
og 3. 
Stokkens Længde fra den nederste Ende til Rachis 
er 140""; den er næsten rund, glat, noget vreden efter 
Længden og overtrukken med Slim. Den nederste, bul- 
bøse Del har en afrundet, næsten tenformet Ende, er 35”” 
i Udstrækning, omtrent 2”” paa det Bredeste, lidt indkne- 
ben paa Midten, men udvider sig atter noget opad, hvor 
den opnaar en Bredde af 27”. og aftager nu efterhaanden 
1 Die gsterreichisch-ungarische Nordpol- Expedition 1872—74. 
Wien 1876, pag. 279. 
2 Denksehriften der k. k. Akademie der Wissenschaften. 
1878, pag. 377. 
3 Report on the Scientific Results of the Voyage of H. M. S. 
Challenger, during the years 1873—76. Zoology, Vol. I, Part II. 
Report on the Pennatulida. 
Wien 
Voyage.4 Dr. Marenzeller? assumes, from Payers illustra- 
tion, (the specimen itself, was left behind on the wreck of 
the ship) that it is probable, that this specimen has been 
a genuine Umbellula encrinus; but complete certainty is 
unattainable. The length of the stalk was 6307. The 
»Challenger* Expedition in 1873—76, brought to light, 
no fewer than 8 species of the genus Umbellula, all of 
which are described by Professor Kölliker.”* Of these, 
seven different from Umbellula encrinus, whilst the 
eighth, viz. Umbellula magniflora, seems from all appear- 
ances to be identical with it.  Kölliker states in this re- 
spect, as follows: ,,The only specimen of this Umbellula* 
sbrought home by the ,Challenger* is in a very bad“ 
»state of preservation; nevertheless, it is of great interest,“ 
pas it is the only known Umbellula which resembles the“ 
» Umbellula of Ellis and Mylius so much, that it seems to“ 
pbe the same species, or at least to come very near it.“ 
are 
The Norwegian North Atlantic Expedition, during 
the exploring voyages undertaken during the years 1876— 
78; obtained twelve specimens of the genus Umbellula, from 
different localities, and in various stages of development; 
but, as we shall show hereafter, all of them, can he as- 
signed to Ellis’ and Mylius’ species; and, as the material 
at our command has been pretty abundant; we have also 
been enabled to compare individual specimens, with Lin- 
dahl’s two species, and also with Kölliker's magniflora. 
From this comparison it appears, that these three species, 
may also be indentified with Umbellula encrinus; and it 
would seem, therefore, to have an extensive geographical 
distribution. 
In now proceeding to give a description of the ex- 
terior of each individual specimen; in order, subsequently, 
to discuss the anatomo-histological structure which is com- 
mon to them all; we commence with the smallest spec- 
imen, and proceed numerically, up to the largest one. 
No. 1 specimen. 
il, 2B arme &, 
The length of the stalk, from the inferior extremity 
to the rachis, is 140”"; it is almost round, smooth, some- 
what twisted longitudinally, and enveloped with mucous. 
The inferior bulbous part, has a rounded, almost spindle- 
formed, extremity, 35”” in extent, and about 2”” broad at 
the broadest part; slightly contracted at the middle; and 
then again expanding somewhat, upwards, where, it attains 
* Die gsterreichisch-ungarische Nordpol- Expedition 1872—74. 
Wien 1876, pag. 279. 
2 
é 
* Denkschriften der k. k. Akademie der Wissenschaften. Wien 
1878, pag. 377. 
3 Report on the Scientific Resuits of the Voyage of H. M. S. 
Volk I, Pas JO 
Challenger, during the years 1873—76. 
Report on the Pennatulida. 
Zoology, 
