ALGOLOGICAL NOTES. 



II. Freshwater Algæ and Plankton from Finmark. 



I have received some samples of Algæ and plankton from 

 Finmark, very kindly collected for me by 0. Klykken Esqr. 



The Algae were from Skjøtningberg and Oksefjord in the 

 extreme North of Finmark, at a Northern Latitude of about 71 ^. 



The benthonic Algæ were poorly represented, but I think 

 that they are worthy of publication, as the localities are the 

 northernmost where anybody ever collected in Norway (exclusive 

 of Spitzbergen and Beeren Eiland.) 



The seven collections contained the following Algæ, of which 

 Euastrum crassicolle is the only species, which can be recogni- 

 sed as having essentially a northern distribution. In one of 

 the samples, the Crustacean Branchinecta paludosa was repre- 

 sented by a few individuals. 



Nostoc sp. (? pundifortne), N. sphcericum, A', pruniforme, 



Pediastrum Boryanum, 



Scenedesmus bijugatus, 



Oocystis parva, 



Stigeoclonium „Sohle", 



Frasiola fluviatilis, 



Oedogonium, Spirogyra & Zygnema sp. (Sterile!), 



Euastrum bidentatum, E. crassicolle, E. elegans, E. verru- 

 ■cosuni, 



Cosmarium Botrytis, long. 75//, lat. 62,5«, lat. isihm. 21 /n. 

 C. crenatuin, C. galerituni. C. humile var. striatum, C. impres- 

 sulum, C. margaritatum,, G. ornatum, C. reniforme, C. sub- 

 crenatum, 



Staurasfrum cuspidatum, St. dejectum, St. dilatatum, St. 

 punctulatum. 



The plankton proved to be of very great interest. — It is 

 collected in a lake of considerable size, viz. Nedre Okse- 

 fjord v and, July 17th, 1920. 



