24 



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havde til undersøgelse, dannede flade ringe. Fra St. 323 

 havde jeg flere kolonier, hvoraf enkelte dannede en skive, 

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

 hætte. Paa St. 267 samt i Lyngenfjorden forekom de og- 

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

 forme kun funden i den østlige del af Ishavet. 



Blandt Nordhavsexpeclitionens 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 

 lindes 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 spitsberg ensis, entalophora 

 deflexa og sandsynligvis membranipora comigera. Forøv- 

 r-igt kan bemerkes, at fortsatte undersøgelser i fjordene 

 nordpaa ganske sikkert vil fremdrage en og anden form, 

 som er funden ved Spitsbergen f. eks., men ikke i Fin- 

 marken. Efter en løs mønstring af det materiale, som jeg 

 medbragte fra min vinterekspedition 1899, har jeg for fau- 

 naen indvundet to nye og eiendommelige polyzoformer, 

 nemlig smittia trispinosa var. arborea og alcyonidium dis- 

 ciforms Den første fra Porsanger-, den anden fra Lyngen- 

 fjorden. Efter de hydrografiske undersøgelser, som jeg fik 

 anledning til at anstille, finder jeg det heller ikke paafal- 

 dende, 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 °/ 00 . Paa 

 dette sted tog jeg smittia trispinosa var. arborea. I Lyngen- 

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

 dyb (bund) temperaturen 3.65° C. Saltgehalten fandtes 

 senere ved titrering at være 34.84 °/ 00 . Her forekom blandt 

 andet ogsaa alcyonidium disciforms. I Jøkelfjorden (arm 

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

 temp. 0.90 C., saltgeh. 34.29 °/ 00 . Her tog jeg diverse ark- 

 tiske polyzoer saasom myriozoum crustaceum, mucronella 

 sincera, rhamphostomeUa scabra, defrancia lucernaria, etc. 

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

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

 kjendskab til fjordenes og havkystens hydrograf! utvilsomt 

 vil biel cage til løsningen af adskillige zoogeografiske spørgs- 

 maal. 



Hincks (8) opfører 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- 



Bidenkap examined were in the 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 has 

 thus hitherto only been found in the eastern part of the 

 Polar Sea. 



A little colony of Babdopleura (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, Entalo- 

 phora deflexa, and probably Membranipora comigera. 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 ne^v and characteristic forms of 

 Polyzoa to the fauna, namely, Smittia trispinosa var. ar- 

 borea and Alcyonidium disciforme, the first from Porsanger, 

 the second from Lyngen Fjord. After the hydrographic 

 investigations that I was enabled to prosecute, I do net 

 consider it at all remarkable that extreme arctic Polyzoa 

 should occur in the fjords of the north. In the Porsanger 

 Fjorel ; 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 °/ ao . 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 3.0.")° C. The salinity was subsequently 



found by titration to be 34.84 



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 0.9° C, the salinity 34.29 °/ 00 . Here 

 I found various arctic Polyzoa, such as Myriozoiim crusta- 

 ceum, Mucronella sincera, RhamphostomeUa scabra, Defrancia 

 lucernaria, etc. I shall not, however, go further into the 

 hyelrographical side of the question here. I will only 

 remark that the increasing knowleelge of the hydrography 

 of the fjords and coast will contribute to the solution of 

 various zoogeographical questions. 



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

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

 land Isles is the only locality. Eight of these 28 were 



mm j|||| 



