KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 20. N:0 5. 65 
of the Murman Sea and the White Sea, as well as in the Norwegian Polar Sea. The 
Flora of the two former seas, as has been demonstrated by Gosr’s detailed and accurate 
description of it, is a mixed Flora, composed of elements from the Atlantic as well as 
the Arctic Sea. Among these elements the following species are probably to be reckoned: 
Corallina officinalis, 
Lithophyllum Lenormandi, 
Laminaria saccharina, 
Eudesme virescens, 
Mesogloia vermicularis, 
Isthmoplea spherophora, 
Bulbocoleon piliferum. 
The same category includes probably several species which are known, besides 
from the Norwegian Polar Sea, also from Baffin Bay on the west coast of Greenland 
or from here as well as from the White Sea and the western Murman Sea. Such are: 
Polysiphonia urceolata, 
» nigrescens, 
Peyssonnelia Dubyi, 
Cruoria pellita, 
Hydrolapathum sanguineum, 
Dumontia filiformis? 
Cystoclonium purpurascens, 
Gigartina mamillosa, 
Rhodochorton sparsum, 
Porphyra laciniata, 
Pelvetia canaliculata, 
Myrionema strangulans, 
Scytosiphon lomentarius, 
Cladostephus spongiosus, 
Sphacelaria cirrhosa, 
» olivacea, 
Enteromorpha clathrata, 
» intestinalis, 
Monostroma Grevillei, 
Cladophora gracilis, 
Chetomorpha tortuosa? 
Bryopsis plumosa, 
Rivularia hemispheerica. 
It appears probable also that some species which occur on the coast of Norway, 
and at the same time are more widely distributed in the Arctic Sea, ought also to be 
regarded as immigrated from the south, viz.: 
Polysiphonia fastigiata, 
» atrorubescens, 
Sarcophyllis edulis, 
Ozothallia nodosa, 
Fucus vesiculosus? 
» serratus, 
Spongomorpha lanosa, 
Cladophora rupestris, 
Lastly, there are to be mentioned here several species which probably, like some 
of those peculiar to the Norwegian Polar Sea, neither have immigrated into the Polar 
Sea, because they do not occur farther to the south or else have a very slight 
southerly distribution, nor can be regarded as old glacial species, on account of their 
present distribution within the Arctic Sea. To this class the following species seem 
to belong: 
Phyllophora Brodizi, Fucus linearis, 
Antithamnion floccosum, »  filiformis, 
» Pylaisiei, »  distichus, 
Fucus edentatus, Alaria Pylaii. 
» miclonensis, 
K. Vet. Akad. Handl. B. 20. N:zo 5. 
