146 KJELLMAN, THE ALG^ OF THE ARCTIC SEA. 



Euthora cristata Dickie, Alg. Sutherl. 1, p. 142; Alg. Curaberl. p. 238. 

 » » Eaton, List, p. 44. 



» » Gobi, Algenfl. Weiss. Meer. p. 33. 



» » Harv. Ner. Am. 2, p. 150. 



» Kjellm. Vinteralg. p. 64; Spetsb. Thall. 1, p. 16; Algenv. Murm. Meer. p. 16; 

 Kariska hafvets Algv. p. 20. 

 » » Kleen, Nordl. Alg. p. 17. 



Fucus coccineus /? pusillus Wg. PL Lapp. p. 500. 

 » cristatus Sommeef. Suppl. p. 184. 



» » gigartinus Gcnn. El. Norv. 2, p. 106; fide syn. 



Nereidea cristata Eupr. Alg. Och. p. 255 sub Nereidea fruticulosa. 

 Rhodymenia cristata Aresch. Phyc. Scand. p. 299. 

 » » Nyl. et Ssel. Herb. Eenn. p. 74. 



» » Post, et Eupr. 111. Alg. p. II. 



Habitat. In the Arctic Sea this alga is generally sublitoral or elitoral. According 

 to Kleen it sometimes occurs at Nordlanden in rock-pools within the literal zone. It 

 prefers an open coast, though it may enter also into deep bays. It is usually attached 

 to larger algae, as Laminaria digitata, Ptilota pectinata, Delesseria sinuosa and Litho- 

 thamnia, more seldom to stones or shells. In most places it grows scattered, with 

 isolated specimens. In the western part of the Kara Sea f. angustata was found gre- 

 garious in rather great masses. At Spitzbergen it continues to develop all the year 

 round. I have found it at Musselbay growing and bearing sporocarps during the 

 winter, although it attains here its highest development during the summer and the 

 autumn. It has been found with sporocarps at Nordlanden during the whole summer, 

 at Finmarken in August and September, at Spitzbergen in July and in January, on 

 the west coast of Novaya Zemlya in July; with tetrasporangia at Nordlanden during 

 the whole summer, at Finmarken in September, at Spitzbergen in July, in the White 

 Sea at the end of June and the beginning of July. It seems thus as if this species 

 could develop sporocarps in the Arctic Sea all the year round, but tetrasporangia 

 chiefly during the summer. 



Geogr. Distrib. It belongs to the Atlantic as well as the arctic region, and is 

 widely distributed in the latter. However it is not known as yet from the Siberian 

 Sea. I have found it most abundant in the eastern part of the Kara Sea. Its northern- 

 most locality is Treurenberg Bay on the north coast of Spitzbergen, Lat. 79° 56' N. 



Localities: The Norwegian Polar Sea: Nordlanden, common, though not abundant; 

 Finmarken scattered, but pretty plentiful, at MaasO, Gjesvser, the south coast of MagerO, 

 Oxfjord and Talvik. 



The Greenland Sea: at several places on the west and north coasts of Spitzbergen, 

 but everywhere scanty. 



The Murman Sea: the coast of Russian Lapland and Cisuralian Sarnoyede-land, 

 Kolgujev Isle, the west coast of Novaya Zemlya and Waygats, at the last-mentioned 

 places scattered and rare. ^ 



The White Sea: pretty common. 



