104 



Scenedesmus Meyen. 



1. S. qiiadricauda Bréb. 



Chodat I: pag. 213. Lo cell. 18, La 6,5. 



Tunok. 



Borgesen I: Rode Ö. 



2. S. bijiigatus Kiitz. 



Chodat i: pag. 212 «seriatus». La 4 — 6. 



Kordlortok, Araaka, Tunok, Jameson Land. 

 Borgesen I: Hekla Havn. 



3. S. denticulatus Lagerh. 

 Borgesen I: Danmarks Ö. 



Polyëdrium Nag. 



1. P. minutum nov sp. 



The cell has four arms narrowing off towards their apices. 

 No spines. Lat. Cell. 19,5/^. Lat. Brach, ad Bas. 4//. Fig. 7. 

 Кар Borlase Warren. 



2. P. angnlosum nov. sp. 

 The cell polygonous with 



roundish corners ; in every corner 

 two short spines. Diam. Cell. 

 18,5;/. Fig. 8. 



Kordlortok Атака. 



Fig. 7. Fig 8. 



Fig. 7. 

 Polyëdrium minutu))! sp. nov. 



Fig. 8. 

 Polyëdriiim angulosum sp. nov. 



I 



I 



1 



Pediastrum Meyen 

 P. Boryanum Menegh. 



var. granulatum Kirchn. 



Tunok, Falkefjæld. 

 Boldt III: Tasiusak. 



var. granulatum forma forcipatum. Raciborski 1: fig. 16. 

 Falkefjæld. 



