156 KJELLMAN, THE ALG OF THE ARCTIC SEA. 
at a depth of 1—4 fathoms, whereas the larger and more vigorous pelagic forms are 
often met with at a depth of 6—10 fathoms. The litoral form, f. densa, occurs gre- 
garious, the others grow scattered, often constituting an element of the the Laminariace- 
formation. i 
On the north coast of Spitzbergen the plant is to be found during the whole 
winter, partly with the prolifications fallen off — this is often the case —, partly with 
prolifications in course of development from the remaining portions — this is the case 
especially in March —, partly with older prolifications remaining and furnished with 
tetrasporangia. However, it reaches its highest development at Spitzbergen in July and 
August and at this season is also most richly provided with ripe tetrasporangia. At 
Spitzbergen specimens with tetrasporangia have been collected in April, July, August, 
October, November and Decemher, on the west coast of Novaya Zemlya in July, on 
the north coast of Norway in July and August, in the Siberian Sea in September, on 
the west coast of Greenland in February. With regard to those peculiar outgrowths 
resembling nemathecia which are sometimes to be found in this plant, and the nature 
of which I am as yet unable to explain, I refer to my paper on the Floridew of Spitz- 
bergen (Spetsb. Thall. 1, p. 18). 
Geog. Distrib. This species is circumpolar. It has its maximum of frequency 
in the northern part of the Norwegian Polar Sea, the eastern part of the Greenland 
Sea and the eastern part of the Murman Sea. The collections of alge from Greenland 
contain a considerable number of individuals of this species, so that it may be supposed 
to be common and abundant there. Already in the southern part of the Norwegian 
Polar Sea it is scarce. The most northerly place where it has been found is Low Is- 
land on the north coast of Spitzbergen, Lat. N. 80° 20’. 
Localities: The Norwegian Polar Sea: Nordlanden, local and scarce; Tromsé amt 
at Rend; Finmarken at Maasé, Gjesver, the south coast of Mageré, Oxfjord, Talvik, 
common and abundant; at Vardé and Vadsé according to GuNNERUS l. ec. 
The Greenland Sea: common and abundant along the west and north coasts of 
Spitzbergen. 
The Murman Sea: the coast of Russian Lapland; the west coast of Novaya Zemlya 
and Waygats from Matotshin Shar to Jugor Shar, common and pretty abundant. 
The White Sea: rather local and scarce. 
The Kara Sea: Cape Palander and Actinia Bay, local and rather scarce. 
The Siberian Sea: Irkaypi, Koljutshin Isle, and Pitlekay, scanty, but pretty common. 
The American Arctic Sea. Cp. Harvey, 1. c. 
Baffin Bay: Cumberland Sound, pretty abundant; the west coast of Greenland: 
Nanortalik, Smallesund, Neuherrnhut, Godthaab, Sukkertoppen, Holstenborg, Disco 
Island, Jakobshavn, Sakak, Rittenbenk, Whale Island (washed ashore), Lat. N. 73° 26’ 
and (?) in Smith’s Sound between Lat. N. 78 and 82°, if, as I suppose, the plant 
reported from there by AsumMrap under the name of Soliera chordalis is some form 
or other of Halosaccion ramentaceum. 
