KONGL. SV. VET. AKADEMIENS HANDLINGAK. BAND 20. N:0 5. 255 



The Murmnn Sea: the coast of Russian Lapland; the west coast of Novaya Zemlya 

 local and scarce. 



The White Sea: at Solowetzki Isles. 



Baffin Bay: the west coast of Greenland at Sukkertoppen. 



Gon. Myrionema G rev. 

 Crypt. Fl. N:o 300, sec. .T. G. Ag. Spec. Alg. 1, p. 47. 



Myrionema strangulans Grev. 

 1. c. 



Descr. et Fig. Myrionema strangulans Harv. Pliyc. Rrit. t. 280. 



E.vsicc. » vulgäre Kjeli.m. in Aresch. Alg. Scand. exsicc. N:o 41.5. 



Syn. Myrionema strangulans Dickie, Alg. Sntherl. 1, p. 141. 

 » vulgäre Kleen, Nordl. Alg. p. .35. 



Hahitat. Attached to litoral algaj, chiefly Ulvacece, but also others, as Polysi- 

 phonia urceolata, Dumontia filiformis, and Cladophorce. It occurs both at exposed and 

 sheltered points and is gregarious. On accoiint of its smallness it can, however, very 

 little influence the character of the vegetation. On the coast of Norway it has been 

 found with plenty of zoosporangia in July and August. 



Geogr. Distrib. It is known with certainty from the Norwegian Polar Sea; but 

 it appears to occur also in Baffin Bay. The most northern place where it is certainly 

 known to live is Gjesvajr on the north coast of Norway about Lat. N. 71°. 



Localities: The Norwegian Polar Sea: Nordlanden common and abundant; Fin- 

 marken local but plentiful at Gjesvasr. 



Baffin Bay: Cp. Dickie, 1. c. 



Fam. LITHODERMATE^ nob. 

 Gen. Lithoderma Arescii. 



Obs. Phyc. 3, p. 22. 



Lithoderma fatiscens Aiiesch. 

 1. c. p. 23. 



Descr. Lithoderma fatiscens Abesch. 1. c. 



Fig. » » tab. nostra 26, fig. 6 — 7. 



Syn. Lithoderma fatiscens Kjellm. Spetsb. Thall. 2, p. 43; Algenv. Murra. Meer, p. 49; Kariska hafvets 

 algv. p. 28. 

 Ralfsia fatiscens Gobi, Algenfl. Weiss. Meer. p. 74. 

 » spec. Kjellm. Vinteralgv. p. 64. 



