KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 20. N:0 5. 117 



Tlie Murman Sea: f. tyj)ica, ori the coast of Russian Lupland and tlie west coast 

 of Novaya Zeralya, at the latter place local and scarce ; f. dadostepkus, on the west 

 coast of Novaya Zemlya, more common and abundant than the preceding form; f. tenuissima, 

 on the coast of Cisuralian Samoyede-land, on the west cost of Novaya Zeralya and Way- 

 gats, here common and abundant. 



The Kära Sea, on the east coast of Novaya Zemlya, on the northern coast of 

 Siberia at Cape Palander and Aktinia bay, everywhere scarce. 



The Siherian Sea: f. tenuissima, at Irkaypi scarce, at and about Pitlekay common 

 and abundant. 



Bafjin Bay: f. typica, at Cumberland Sound common; on the west coast of Greeii- 

 land in several places, as at Lichtenau, Julianeshaab, Godthaab, Sukkertoppen, Hol- 

 stenborg, Godhavn and Rittenbenk. 



Rhodomela larix (TuRN.) Ag. 



Spec. Alg. 1, p. 376: Fucus larix Turn. Hist. Fuo. 4, p. 23. 

 Descr. Rhodomela lari\ J. G. Ag. Spec. Alg. 2, p. 886. 

 Fig. Fucus larix Turn. 1. c. t. 207. 



Syn. Rhodomela larix Harv. Fl. West.-Esk. p. 49. 



Hab, Nothing is known about tlie habitat of this species in the Arctic Sea. 



Geocjr. Distr. I have not myself had the opportunity of seeiug this species in the 

 Arctic Sea. It seems to be of very local occurrence here and to belong only to that 

 part of it, which lies to the north-east of Behring Strait, having probably immigrated 

 there from the Behring Sea, where it occurs abundantly even far towards the north. 



Locality. According to Seemann (1. c.) it has been found in that part of the 

 American Arctic Sea, which stretches along the north coast of western Eskimaux-land. 



Gen. Polysiplionia Grev. 



Fl. Bdinb. p. 308, sec. J. G. Ag. Spec. Alg. 2, p. 900. 



Polysiphonia parasitica (Huds.) Grev. 



Fl. Edinb. p. 309; Conferva parasitica Huus. Fl. xVngl. p. 604. 



f. typica. 

 Descr. Polysiphonia parasitica J. G. Ag. Spec. Alg. 2, p. 930. 

 Fig. » » Harv. Phyc. Brit. t. 147. 



Exsiac. » » Crouan, Alg. Finist. N:o 315. 



iSyn. Polysiphonia parasitica Kleen, Nordl. Alg. p. 14. 



Habitat. It grows attached to shells in several fathoms water together with Plo- 

 camium coccineum. Only found sterile in the Polar Sea. 



Geogr. Distrib. It belongs to the Atlantic region of the Polar Sea. 



Locality. It has been taken by Kleen in the southern part of the Norwegian 

 Polar Sea at the Givasr isles in Nordlanden. 



