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24
havde til undersøgelse, dannede flade ringe. Fra St. 323
havde jeg tiere kolonier, hvoraf enkelte dannede en skive,
andre en flad ring, og atter andre havde fonn af en liden
hætte. Paa St. 267 samt i Lyngenfjorden forekom de
ogsaa dels i ring, dels i skiveform. Hidtil er altsaa il.
disciforme kun funden i den østlige del af Ishavet.
Blandt Nordhavsexpeditionens materiale fandtes ogsaa
en liden koloni af rabdopleura (fra St. 10), men den var
saa daarlig konserveret, at man intet væsentligt kunde se
paa den. Det eneste, som saaledes kan konstateres, er
alene forekomsten paa nævnte sted.
Selv om man til Norges fauna henfører alt, som
findes indenfor territorialgrænsen (4 kv.mil fra land), blir
der dog 3—4 arter i foranstaaende fortegnelse, som ialfald
foreløbig ikke kan medregnes til vor fauna. Disse er,
menipea normani, membranipora spitsbergensis, entalophora
de fl exa og sandsynligvis membranipora cornigera.
Forøv-rigt kan bemerkes, at fortsatte undersøgelser i fjordene
nordpaa ganske sikkert vil fremdrage en og anden fonn,
som er funden ved Spitsbergen f. eks., men ikke i
Finmarken. Efter en løs mønstring af det materiale, som jeg
medbragte fra min vinterekspedition 1899, har jeg for
faunaen indvundet to nye og eiendommelige polyzoformer,
nemlig smittia trispinosa var. arborea og alcyonidium
disc/forme. Den förste fra Porsanger-, den anden fra
Lyngen-fjorden. Efter de hydrografiske undersøgelser, som jeg flk
anledning til at anstille, finder jeg det heller ikke
paafaldende, at høiarktiske polyzoer forekommer i de nordlige
fjorde. I Porsangerfjorden mellem store og lille Tamsø
fandtes saaledes 27de april 1899 paa bunden i 200 meters
dyb en temperatur 0.2° C. og saltgehalt 34.48 °/on. Paa
dette sted tog jeg smittia trispinosa var. arborea. I
Lyngenfjordens ytre del maalte jeg 3die mai 1899 i 320 meters
dyb (bund) temperaturen 3.05° C. Saltgehalten fandtes
senere ved titrering at være 34.84 0 00. Her forekom blandt
andet ogsaa alcyonidium disc/forme. I Jøkelfjorden (arm
af Kvænangen) var den 20de april 1899 i 80 meters dyb
temp. 0.!)» C., saltgeh. 34.20 °/00. Her tog jeg diverse
arktiske polyzoer saasom myriozoum crustaceum, mucronella
sincera, rhamphostomella scabra, defrancia lucernaria, etc.
Imidlertid vil jeg her ikke gaa nærmere ind paa den
hydrografiske side af sagen, jeg vil kun nævne at det voksende
kjendskab til fjordenes og havkystens hydrografi utvilsomt
vil bidrage til løsningen af adskillige zoogeografiske
spørgsmaal.
Hincks (8) opfører 235 arter af polyzoer for den
britiske fauna og for 28 af disse er Shetland den eneste
britiske lokalitet. Af de 28 var 8 ikke funden udenfor Sliet-
Bidenkap examined were in ille form of flat rings. I had
several colonies from Station 323, in which some were in
the form of a disc, others of a flat ring, while others
again were in the form of a little cowl. At Station 267
and in the Lyngen Fjord, too, they occurred partly in
the shape of rings, partly discoidal. A. disciforme lias
thus hitherto only been found in the eastern part of the
Polar Sea.
A little colony of Habdopleura (from Station 10) was
also in the North Atlantic Expedition collection; but it
was in such a bad state of preservation, that nothing of
any consequence could be seen in it. The only thing that
can be proved is its occurrence in the above-named place.
Even if all that are found within four miles of the shore,
were to be referred to Norway’s fauna, there would still
be 3 or 4 species in the above list, that for the present,
at any rate, cannot be reckoned among our fauna. These
are Menipea normani, Membranipora spitsbergensis,
Entalophora deflexa, and probably Membranipora cornigera. It
may be further remarked that continued investigations of
the northern fjords will certainly bring to light some form
or other that is found, for instance, in Spitsbergen, but
not in Finmark. After a casual review of the collection
that I brought back from my expedition in 1899, I find
that I have added two new and characteristic forms of
Polyzoa to the fauna, namely, Smittia trispinosa var.
arborea and Alcyonidium disciforme, the first from Porsanger,
the second from Lyngen Fjord. After the hydrographic
investigations that I was enabled to prosecute, I do nr.t
consider it at all remarkable that extreme arctic Polyzoa
should occur in the fjords of the north. In the Porsanger
Fjord, between Great and Little Tamsø, for instance, there
was found, on April 27th, 1899, on the bottom at a depth
of 200 metres, a temperature of 0.2° C., and salinity
34.48 °/00. At this spot I found Smittia trispinosa var.
arborea. In the lower part of Lyngen Fjord, on May 3rd,
1899. I found on the bottom, at a depth of 320 metres,
a temperature of 3.(>:>° C. The salinity was subsequently
found by titration to be 34.84 0 00. Alcyonidium disciforme
occurred here, among others. In Jøkelfjorden, an arm of
Kvænangen, on April 20th, 1899, at a depth of 80 metres,
the temperature was 0.0° C., the salinity 34.29 u/00. Here
I found various arctic Polyzoa, such as Myriozoum
crusta-ceum, Mucronella sincera. Rhamphostomella scabra. Defrancia
lucernaria, etc. 1 shall not, however, go further into the
hydrographical side of the question here. I will
only-remark that the increasing knowledge of the hydrography
of the fjords and coast will contribute to the solution of
various zoögeographical questions.
Hincks (8) puts down 235 species of Polyzoa as
belonging to the British fauna, and for 28 of these the
Shetland Isles is the only locality. Eight of these 28 were
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