290 KJELLMAN, THE ALGiE OF THE ARCTIC SEA. 



Syn. Enteromorpha intestinalis J. G. Ag. Spetsb. Alg. Progr. p. 2; Bidr. p. 11; Till. p. 28. 



" » f. compressa Kjellm. Spetsb. Thall. 2, p. 43; Algenv. Murm. Meer. p. 49. 



Scytosipboii oompressus [i crispatus Lyngb. Hydi-. Dan. p. 64. 

 Ulva compressa GuNN. Fl. Norv. 2, p. 120 (?). 

 » » ScHRENK, Ural. Eeise, p. 547. 



» » SOMMERF. Suppl. p. 186. 



» » Wg. Fl. Lapp. p. 508; ex parte. 



» Enteromorpha Gobi, Algeiifl. Weiss. Meer. p. 80; saltem ex parte. 



Hahitat. This is one of the few species that are litox^al in the whole Polar Sea. 

 It is attached to stones or algte and occurs both on exposed and sheltered coasts, 

 sometimes gregarious in considerable numbers. I have found it with reproductive or- 

 gans at Spitzbergen at the end of July, on tiie coast of Norway in August and September. 



Geogr. Distrib. The present species has been found circurapolar in some form or 

 other. The northernmost point where it is certainly known to occur is Fairhaven on 

 the north-west coast of Spitzbergen Lat. N. 79° 49 . 



Localities: The Norivegian Polar Sea: Nordlanden, f. typica and f. capillacea, com- 

 mon and abundant; Tromsö amt about the town of Tromsö, f. typica and f. prolifera; 

 Finmarken at Maasö, Gjesva^r, the southern coast of Magerö, Talvik, f. typica and f. 

 prolifera scarce, f. capillacea and f. racemosa rather abundant. 



The Greenland Sea: f. typica and a transition between it and f. racemosa, pretty 

 common but not abundant on the north-west and north coasts af Spitzbergen. 



The Murman Sea: on the west coast of Novaya Zemlya rather local and scarce 

 in a form most nearly related to f. racemosa: Kolgujew Isle and the coast of Cisura- 

 lian Samoyede-land (?). 



The White Sea: at several places according to Gobi. 



The Siberian Sea: Actinia Bay, in a low, almost typical form. 



The American Arctic Sea: Port F^ennedy, Beachey Island, As.sistance Bay, Bäring Bay. 



Baffin Bay: Cumberland Sound not rare; the west coast of Greenland at Fri- 

 deriksdal, Nanortalik, Lichtenau, Julianeshaab, Sraallesund, Ameralik, Jakobshavn, Sakkak, 

 Rittenbenk, ff. capillacea, prolifera, and racemosa; Smith Sound between the 78:th and 

 82 :d latitude. 



Enteromorpha complanata KuTZ. 

 Spec. Alg. p. 480; Cfr. Ahln. Enterom. p. 25. 



f. prolifera. nob. 



f. tlialli axi priraario elongato, complanato, apicera versus dilatato, secundum totam longitudinem ramos 

 crebros, elongatos, axem primarium remitlantes eraitteiite. 



Description. A leading axis is plainly to be distinguished in the frond, attaining 

 a length of even 30 cm., downwards narrow, almost terete, upwards thickening and 

 fiattened, about 1 cm. broad in its uppermost part. It bears along its whole length a 

 great number of simple branches of the same shape as the main axis. 



