312 K.IELLMAN, THE ALGiE OF THE ARCTIC SEA. 



f. typica. 

 Descr. Conferva melagonium Web. et Mohr. 1. c. 

 Fig. Chretoraoi-pha Picquotiana KuTZ. Tab. Phyc. 3, t. 58. 

 Exsicc. » melagonium Wittr. et Nokdst. Alg. exsicc. N:o 415. 



f. rupincola Åresch. 



Conferva melagonium var. rupincola Auesch. Alg. Scand. exsicc. N:o 275, a. 

 Descr. Conferva melagonium Harv. Phyc. Brit. t. 99, A. 

 Fig. Chfetoraorpha melagonium KiJTZ. Tab. Phyc. 3, t. 61. 

 E.-cDicc. Conferva melagonium var. rupincola Abe.sch. 1. o. 



Syn. Chfetoraorpha melagonium Dickie, Alg. Cumberl. p. 239. 



» » GcBi, Algenfl. Weiss. Meer. p. 87. 



» » K.JELLM. Algenv. Murm. Meer. p. 56. 



» » Kleen, Nordl. Alg. p. 45. 



» » Zeller, Zweite d. Polarf. p. 83. 



Conferva liniim Post. et Eupr. 111. Alg. p. II, Cfr. Gobi, 1. c. 



» melagonium .T. G. Ag. Progr. p. 2; Bidr. p. 11; Grönl. Alg. p. 110. 



» » Croall, Pl. Disc. p. 461. 



» » Dickie, Alg. Sntberl. 1, p. 143; 2, p. 192; Alg. Walker, p. 86. 



» » Eaton. Liste, p. 44. 



» » Kjellh. Vinteralgv. p. 65; Spetsb. Thall. 2. p. 56; Kariska hafvets Algv. p. 29. 



I) » LiNDBL. Bot. Not. p. 158. 



» » Lyngr. Hydr. Dan. p. 148. 



1) » Nyl. et Sml. Herb. Fenn. p. 75. 



» » Wittr. in Heugl. Reise, p. 284. 



Hahitat. The form rupincola is litoral, growing in rock-pools or on rocks cover- 

 ed with sand. The typical form, on the contrary, is always sublitoral, occurring in 

 2 — 15 fathoms water, chiefly on gravelly bottom. It grows sometimes on exposed 

 coasts, sometimes in sheltered localities, attached to stones or (more seldom) to algae. 

 1 have myself always found it scattered, but the large quantities of it brought home 

 from Greenland seem to indicate that it occurs gregarious there, at least in certain 

 places. On the north coast of Spitzbergen it develops during the whole winter. I 

 have seen specimens with zoospores in July at Finmarken. 



Geogr. Distrib. The present species is circumpolar and apparently attains its 

 maximum of frequency in Baffin Bay. The most northerly locality where it has been 

 found, is Discovery Bay in Smith Sound Lat. N. 81° 41'. 



Localities: The Norwegian Polar Sea: Nordlanden (f. typica and f. rupincola) local 

 and scarce; Finmarken at Maasö, f. rupi?icola rather coramon and abundant, f typica 

 local and scarce. 



The Greenland Sea: (f. typica) commonly distributed, but not abundant on the 

 coast of Spitzbergen; Sabine Island on the east coast of Greenland. 



The Murman Sea: Russian Lapland and the coast of Cisuralian Samoyede-land; 

 commonly spread, but scarce on the west coast of Novaya Zemlya and Waygats (f. 

 typica.) 



The Kära Sea: Uddebay, Cape Palander, and Actinia Bay (f. typica). 



