282 KJELLMAN, THE ALG OF THE ARCTIC SEA. 
On the north coast of Norway it has been found with zoosporangia and gametangia 
from July to September; on the coast of Spitzbergen I have seen specimens with re- 
productive organs in all the months of the year with the exception of May and Oc- 
tober. They were however rare during the winter. On the west coast of Novaya 
Zemlya I have collected individuals with such organs in July, in the Kara Sea in July 
and August. 
Geogr. Distrib. The present species is probably circumpolar. It is however not 
nown as yet from the American Arctic Sea. The maximum of frequency is in the 
Norwegian Polar Sea. The most northerly point is Low Island on the north coast of 
Spitzbergen Lat. N. 80° 20’. 
Localities: The Norwegian Polar Sea: Nordlanden common and abundant; Tromsé 
amt common and abundant about the town of Tromsé, at René and Carlsé; Finmarken 
common and abundant at Maasd, Gjesver, the south coast of Mageré, Oxfjord, and 
Talvik. 
The Greenland Sea: the east coast of Greenland at Sabine Island; on the coasts of 
Spitzbergen common, but not abundant; Beeren Eiland. 
The Murman Sea: the coast of Russian Lapland and Cisuralian Samoyede-land; 
the west coast of Novaya Zemlya and Waygats rather common but not abundant. 
The White Sea: common and abundant. 
The Kara Sea: Uddebay rather abundant; Actinia Bay and Cape Tshelyuskin scarce. 
The Siberian Sea: at Pitlekay rather abundant. 
Baffin Bay: Cumberland Sound common; the west coast of Greenland: Tessar- 
miut, Nanortalik, Lichtenau, Kakortok, Fiskernas, Hunde Islands, Lat. N. 73° (floating). 
Pylaiella varia nob. 
P. thallo racemose-ramoso; ramis sub angulo fere recto egredientibus duplicis generis, longioribus et bre- 
vissimis; his e singula bis denis cellulis constructis, omnibus vel saltem nonnulis, vulgo divisione vario modo 
peracta, in zoosporangia vario modo disposita mutatis. Tab. 27, fig. 1—12. 
Syn. Ectocarpus Landsburgii Dickin, Alg. Sutherl. 1, p. 142. 
» Vidovichii Wirrr. in Heugl. Reise, 3, p. 284. 
Pylaiella litoralis KszLLM. Spetsb. Thall. 2, p. 36; ex parte. 
Description. In the collections af algw brought home by Hrveuin from the coast 
of Spitzbergen there was found a peculiar EHctocarpacea, which was determined as Ec- 
tocarpus Vidovichii. Having myself met with the same alga on the coast of Spitzbergen, 
I found that it belonged to the genus Pylaiella. I held it to be an abnormally deve- 
loped form of the multiform P. litoralis. Both the specimens of Heuarin and those 
collected by myself were in a stage of development that prevented their being certainly 
determined. I have later found numerous, fully developed individuals of the same alga 
on the north coast of Norway. These differ so much in many respects from the common 
forms of Pylaiella that I cannot but hold them to belong to another species. I propose to 
give this new species the name of varia, by which I mean to denote the great variations ex- 
hibited in the development of the zoosporangia. The alga forms loosely complicated mats 
