KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 20. N:0 5. 279 
Habitat. Sublitoral, attached to Laminaria digitata. It bears gametangia at 
Nordlanden in July and August. 
Locality: The Norwegian Polar Sea: Nordlanden at Lofoten. 
Ectocarpus fasciculatus Harv. 
Man. p. 40; ex parte. 
Descr. Kctoecarpus fasciculatus KJeLLM. Skand. Eet. och Tilopt. p. 89. 
Fig. » » Harv. Phyc. Brit.’ t.' 273. 
Exsice. » » Argescu. Alg. Scand. exsicc. N:o 114. 
Syn. Ectocarpus fasciculatus Keen, Nordl. Alg. p. 38. 
Habitat. This species grows in the litoral zone, scattered, on exposed coasts, 
usually attached to other algw, as species of Monostroma, occasionally to stones. It 
bears gametangia in the Norwegian Polar Sea in July and August. 
Geogr. Distrib. It belongs to the Atlantic region of the Arctic Sea, being rare 
in the northern part, common in the southern. Its northernmost point is Gjesver in 
Finmarken about Lat. N. 71°. 
Localities: The Norwegian Polar Sea: Nordlanden common and abundant; Fin- 
marken local and scarce at Maasé and Gjesvier. 
Ectocarpus tomentosus (Hups.) Lynas. 
Hydr. Dan. p. 132. Conferva tomentosa Huns. Fl. Ang. p. 594. 
Descr. Ectocarpus tomentosus Kyetim. Skand. Ect. och Tilopt. p. 63. 
Fig. » » Harv. Phyc. Brit. t. 182. 
Exsice. » » Arescu. Alg. Scand. exsice. N:o 110. 
~I 
Syn. Ectocarpus tomentosus Kiepn, Nordl. Alg. p. 37. 
Habitat. Litoral, attached to other alg, usually Pucacea. It is often gregarious 
and lives chiefly in localities exposed to a heavy surge. In July and August it has 
been found with gametangia. 
Geogr. Distrib. Known only from the southern part of the Atlantic region of 
the Polar Sea. 
Locality: The Norwegian Polar Sea: Nordlanden common and abundant. 
EKctocarpus ovatus KsELum. 
Spetsb. Thall. 2, p. 35. 
Deser. et Fig. Ectocarpus polycarpus Ksetum. Skand. Ket. och Tilopt. p. 93, et t. 1, fig. 5. 
Syn. Ectocarpus ovatus Kyetium. Spetsb. Thall. 2, p. 35. 
» polyearpus Kiern, Nordl. Alg. p. 38. 
Habitat. This species is litoral in the Norwegian Polar Sea, attached to Coral- 
lina officinalis, sublitoral and fastened to other algw in the Greenland Sea. It grows 
