KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 20. N:0 5. 211 
Syn. Rucodium canaliculatum Kieren, Nordl. Alg. p. 31. 
Fucus canaliculatus Arescu. Phye. Scand. p. 258. 
» » Post. et Rupr. Ill. Alg. p. HU. 
» » We. Fl. Lapp. p. 495. 
Pelvetia canaliculata Gopi, Algenfl. Weiss. Meer. p. 51. 
Habitat. It forms a uarrow girdle in the upper part of the litoral zone, scattered 
specimens advancing even above high-water mark. Though preferring exposed coasts, 
it is met with also in sheltered localities, nay, even in the interior of deep bays. It 
is gregarious, but does not occur any where in great number. On the arctic coast of 
Norway it bears receptacles during the whole summer. 
Geogr. Distrib. Known from the Norwegian Polar Sea, the White Sea, and Baffin 
Bay. The only authority for its existence in the last-mentioned region is a specimen in 
the herbarium of the Copenhague Museum, stated to have been taken at Greenland by 
Wormsnioitp. It probably reaches its maximum of frequency on the northern coast of 
Norway. The most northerly point from where it is reported is Gjesver on the north 
coast of Norway, about Lat. N. 71°. 
Localities: The Norwegian Polar Sea: Nordlanden common and abundant; Tromsé 
amt, common and abundant at the town of Tromsé and at Rend; Finmarken, common 
and abundant at Maasd, Gjesver, the south coast of Mageré, and Oxfjord, scarce at 
Talvik. 
The White Sea: Cp. Gost 1. ¢. 
Baffin Bay: the west coast of Greenland, according to a specimen in the her- 
barium of the Copenhague Museum, the particular locality not being noted. 
Fam. TILOPTERIDEZ Tuur. 
in Le Jou. Liste Alg. Cherb. p. 16. 
Gen. Scaphospora KJELuM. 
Algenv. Murm. Meer. p. 29. 
Scaphospora arctica KyELum. 
lc. (ps ok 
Descr. et Fig. Scaphospora arctica KyeurM. |. c. et t. 1, fig. 1—15. 
Habitat. It has been found only once and in little number within the sublitoral 
zone on gravelly bottom at a depth of 5—10 fathoms in a sound with strong current. 
At the beginning of August it was richly provided with propagative organs. 
Geogr. Distrib. Known only from the eastern Murman Sea. 
Locality: the western mouth of Jugor Shar. 
