24 



havdc til uiidersøgelse, damiede flade ringe. Fra St. o23 

 havrle jeg flere kolonier, hvoraf enkelte dannede en skive, 

 andre en flad ring. og atter andre havde form af en liden 

 lia-tte. Paa St. 267 samt i Lyngenfjorden forekom de og- 

 saa dels i ring. dels i skiveform. Hidtil er altsaa a. disci- 

 forme kun funilen 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 fanna henfører alt. som 

 tindes indenfor territorialgrænsen (4 kv.mil fra land), bla- 

 der dog 3 — 4 arter i foranstaaende fortegnelse, som ialfaid 

 iorelobig ikke kan medregnes til vor fauna. Disse er, 

 )iieiiipea nonnani. mcmhraiiipora Kpitsherijensis, cnialophitru 

 deflexa og sandsynligvis metnhranipora cornigera. Forov- 

 rist kan bemerkes, at fortsatte undersøgelser i fjordene 

 nordpaa ganske sikkert vil fremdrage en og anden form. 

 som er fuiiden ved Spitsbergen f. eks., men ikke i fin- 

 marken. Efter en los mønstring af det nmteriale, som jeg 

 medbragte fra min vinterekspedition 1899, har jeg for fau- 

 naen indvundet to nye og eiendommelige ]iolyzofornier. 

 uendig ^mittia fihpinosa var. arhorea og aJci/ouidium di^- 

 rjfornie. Den forste fra Porsanger-, den anden tVa Lyngen- 

 fjorden. Efter de liydrogratiske undersogelser, som jeg flk 

 anledning til at anstille, tinder jeg det beiler ikke paafal- 

 dende, at hoiarktiske polyzoer forekommer i de nordlige 

 tjorde. I Porsangerfjorden melleni store og lille Tamsø 

 tandtes saaledes 27de april 1899 paa Inmden i 200 meters 

 dyb en temperatur 0.2" Q. og saltgebalt 34. 4S **/„„. Paa 

 dette sted tog jeg siniftia triitpinosa var. arborea. I Lyngen- 

 fjordens ytre del maalte jeg 3die mai 1899 i 320 meters 

 dyb (bnnd) temperaturen S.G.-i" C. vSaltgeh.alten fandtes 

 senere ved titrering at være 34.84 " g,,. Her forekom blandt 

 andet ogsaa ahyomdium disciforme. I Jøkelfjorden (ann 

 af Kvænangen) var den 20de april 1899 i 80 meters dyb 

 temp. 0.!in C, saltgeh. 34.29 •>/„(,. Her tog jeg diverse ark- 

 tiske polyzoer saasum iii//i'io.coniii rnistaceum. mncroitella 

 sinccra. rlntmpJiogtomeUa scahra. defrancia hiccrnariii. etc. 

 Imidlertid vil jeg her ikke gaa nærmere ind paa den hy- 

 drografiske side af sagen, jeg vil kun nævne at det voksende 

 kjendskal) til tjordenos og havkystens hydrografi utvilsomt 

 vil j)idi-age til løsningen af adskillige zoogeografiske sporgs- 

 maal. 



Hincks (8) opforer 235 arter af polyzoer for den bri- 

 tiske fauna og for 28 af disse er Shetland den eneste bri- 

 tiske lokalitet. Af de 28 var 8 ikke funden udenfor Shet- 



Bidenka|) examined were in ihe form of flat rings. I liad 

 several colonies from Station 323, in which some were in 

 the form of a disc, otiiers of a flat ring, wiiile others 

 again were in tlie 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 has 

 thus hitherto only l)een found in the eastern part of the 

 Polar Sea. 



A little colony of RabdopJeura (from Station 10) was 

 also in tlie North Atlantic Expedition coUection ; hut it 

 was in such a bad state of preservation, that nothing of 

 any consequence could be seen in it. The only thiiig that 

 can be proved is its occurrence in the above-named place. 



Even if all that are found within fonr miles of the shore, 

 were to be referred to Norway's fauna, there would still 

 be 3 nr 4 species in the above list, that for the i)resent, 

 at any rate, cannot be reckoned among our fauna. These 

 are ilcnipea iiorniuiii. Mcmbranipora spifsbcrgcnsis. EiitaJo- 

 jihnra dejie.ra. ant! prolialdy Meiidjranipiiya roniif/era. It 

 inay be fiirtjier remarked that continued investigotions of 

 the northern fjords will certainly bring to light some form 

 or other that is found, for instance, in Spitsliergen, hut 

 not in Finmark. After a casual review of the collection 

 that I brought back from my expedition in 1899, I tind 

 that I have added two new and characteristic forms of 

 Polyzoa to the fauna, naraely. Sinittin trispiiiasa var. ar- 

 borea and Alcyonidiuni disciforme. the first from Porsanger, 

 the second from Lyngen Fjord. After the hydrographic 

 investigations tiiat 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 "/oo- At this spot I found Siiiiftia trispiuosa var. 

 arboreii. In the lower part of Lyngen Fjord, on May 3rd, 

 1899, I found on the bottom, at a depth of 320 metres, 

 a tem[)erature of 3. (i.'!" C. The salinity was subsequently 

 found by titration to be 34,84 %a. AJcijnmdiuni disciforme 

 occurred here. among others. In Jøkelfjorden, an arm of 

 Kvienangen, on April 20tii, 1899, at a dej)th of 80 metres, 

 the temperature was O.o" C, the salinity 34,29 "/oj. Here 

 I found various arctic Polyzoa, such as Myriozown. crusta- 

 ceiim. Mucronella sincera. Rhamphosiomélla 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 liydrograi)hy 

 of tlie fjords and coast will contribute to the S(dution of 

 various zoogeographical questions. 



Hincks (8) puts down 235 species of Polyzoa as be- 

 longing to the British fauna, and for 28 of these tiie Shet- 

 land Isles is the onlv localitv. Eight of these 28 were 



