192 KJELLMAN, THE ALGiE. OF THE ARCTIC SEA. 



The lower part of the frond is composed of club-shaped cells. The tips of these 

 cells imbedded in gelatine form the callus radicalis. The rest of the frond consists of 

 cells that are rectangular in transverse section with the corners of the cell-rooms pretty 

 much rounded. Sporocarps and antheridia are produced in different individuals and 

 take up an irregular zone in the margin of the frond, broader than in P. laciniata. 

 The sporocarps have few spores (tab. 18, fig. 10 and 11). 



Habitat. As far as my experience goes, this species belongs to the deeper parts 

 of the sublitoral region, on exposed coasts, growing scattered, attached to other algse 

 or Hydromedusce. It has been found in deep water also by Kleen. Specimens with 

 antheridia have been taken at Nordlanden in July, with sporocarps in development at Fin- 

 marken in the beginning of August. Individuals from Greenland, collected at the end 

 of September or beginning of October, possess antheridia and sporocarps. 



Geogr. Distrib. I cannot decide where the centrum of distribution of this 

 species is to be placed. It is not commonly spread in the Arctic Sea. The greatest 

 number of individuals appears to have been met with on the coast of Russian Lapland. 

 The most northern locality is Gjesv^er on the north coast of Norway, Lat. N. 71° 5'. 



Localities: The Norwegian Polar Sea: Nordlanden rare; Finmarken rare at MaasO 

 and Gjesvasr. 



The Murman Sea: the coast of Russian Lapland, a great number of specimens 

 collected. 



The White Sea: probably scarce. 



Baffin Bay: the west coast of Greenland at Sukkertoppen. 



Gen. Bangia (Lyngb.) Kutz. 



Phyc. gener. p. 248; Lyngb. Hydr. Dan. p. 82; lira. mut. 



Bangia fuscopurpurea (Dillw.) Lyngb. 

 1. c. p. 83. Conferva fuscopurpurea Dillw. Brit. Conf. p. 92. 

 Descr. Raiigin fuscopurpurea IIadck, Meeresalg. p. 22. 

 Fig. » » KiJTZ. Tab. Phyc. .3, t. 29. 



Exsirc. » » Akesch. Alg. Scand. exsicc. N:d 118. 



Syn. Bangia arctica Poslie, Arct. Havalg. p. 5. Cfr. Hauck, 1. c. ot Bkrth. Bangiaceen, p. 23. 

 « fuscopurpurea Kleen, Nordl. Alg. p. 24. 

 » » Croall, pi. Disc. p. 461. 



Conferva atropurpurea \Vg. F1. Lapp. p. 515. 



Habitat. It is litoral, growing between tide-marks either in rock-pools or on 

 stones. I do not know at what time it bears propagative organs in the Arctic Sea. 



Geogr. Distrib. The species is known with certainty from the Norwegian Polar 

 Sea. It has been met with also in Baffin Bay; but not being attached, its occurrence 

 here is uncertain. Its northernmost known locality is North Cape on the north coast 

 of Norway. 



