KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 20. N:0 5. 955 
The Murman Sea: the coast of Russian Lapland; the west coast of Novaya Zemlya 
local and scarce. 
The White Sea: at Solowetzki Isles. 
Laffin Bay: the west coast of Greenland at Sukkertoppen. 
Gen. Myrionema Grrv. 
Crypt. Fl. N:o 300, sec. J. G. Ac. Spec. Alg. 1, p. 47. 
Myrionema strangulans Grev. 
ice 
Descr. et Fig. Myrionema strangulans Harv. Phye. Brit. t. 280. 
Exsicc. » vulgare Kyetim. in Argescu. Alg. Scand. exsice. N:o 415. 
Syn. Myrionema strangulans Dickre, Alg. Sutherl. 1, p. 141. 
» vulgare KLEEN, Nordl. Alg. p. 35. 
Habitat. Attached to litoral algw, chiefly Ulvacew, but also others, as Polysi- 
phonia urceolata, Dumontia filiformis, and Cladophore. It occurs both at exposed and 
sheltered points and is gregarious. On account 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 Gjesver 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 Gjesveer. 
Baffin Bay: Cp. Diexi, 1. e. 
Fam. LITHODERMATEE nob. 
Gen. Lithoderma AReEscu. 
Obs. Phyce. 3, p. 22. 
Lithoderma fatiscens ARESCH. 
lie. ip 20. 
Deser. Lithoderma fatiscens Argscn. 1. ¢. 
Fig. » » tab. nostra 26, fig. 6—7. 
Syn. Lithoderma fatiscens Kyptum. Spetsb. Thall. 2, p. 43; Algenv. Murm. Meer, p. 49; Kariska hafvets 
algv. p. 28. 
Ralfsia fatiseens Gopi, Algenfl. Weiss. Meer. p. 74. 
» spec. Ksetum. Vinteralgv. p. 64. 
