290 KJELLMAN, THE ALG OF THE ARCTIC SEA. 
Syn. Enteromorpha intestinalis J. G. Ac. Spetsb. Alg. Progr. p. 2; Bidr. p. 11; Till. p. 28. 
» » f. compressa Kyeiim. Spetsb. Thall. 2, p. 43; Algenv. Murm. Meer. p. 49. 
Scytosiphon compressus ( crispatus Lynes. Hydr. Dan. p. 64. 
Ulva compressa Gunn. Fl. Norv. 2, p. 120 (?). 
» » Scurenk, Ural. Reise, p. 547. 
» » SomMerF. Suppl. p. 186. 
» » We. Fl. Lapp. p. 508; ex parte. 
» Enteromorpha Gost, Algenfl. Weiss. Meer. p- 80; saltem ex parte. 
Habitat. This is one of the few species that are litoral in the whole Polar Sea. 
It is attached to stones or alge 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 the coast of Norway in August and September. 
Geogr. Distrib. The present species has been found circumpolar 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 Norwegian Polar Sea: Nordlanden, f. typica and f. capillacea, com- 
mon and abundant; Tromsé amt about the town of Tromsé, f. typica and f. prolifera; 
Finmarken at Maasd, Gjesver, the southern coast of Mageré, 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 Gost. 
The Siberian Sea: Actinia Bay, in a low, almost typical form. 
The American Arctic Sea: Port Kennedy, Beachey Island, Assistance Bay, Baring Bay. 
Baffin Bay: Cumberland Sound not rare; the west coast of Greenland at Fri- 
deriksdal, Nanortalik, Lichtenau, Julianeshaab, Smallesund, Ameralik, Jakobshavn, Sakkak, 
tittenbenk, ff. capillacea, prolifera, and racemosa; Smith Sound between the 78:th and 
82:d latitude. 
Enteromorpha complanata Korz. 
Spec. Alg. p. 480; Cfr. Auzn. Enterom. p. 25. 
f. prolifera nob. ’ 
f. thalli axi primario elongato, complanato, apicem versus dilatato, secundum totam longitudinem ramos 
crebros, elongatos, axem primarium zmulantes emittente. 
Description. A leading axis is plainly to be distinguished in the frond, attaining 
a length of even 380 cm., downwards narrow, almost terete, upwards thickening and 
flattened, 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. 
