206 



4. C. limneticus Lemm. ^ 



Found in Plankton from Sorvaagsvatn (Vaago); and Grothusvatn 

 (Sando). 



5. Gleocapsa Magma Kiitz. 



This species has been already found by Lyngbye, who in Hydro- 

 phyt. p. 206 calls it Pamella alpicolu, With regard to its distribution 

 Lyngbye writes: »Habitat supra Muscos et Lichenes ad saxa alpina in 

 summitate rupium altissimarum Færoensium, Skjelling, Snejsen et Ejls- 

 fjeld prope Quivig, haud frequens«. Jonsson collected it near Thorshavn 

 on Stereocaulon (Str.X On Rejafjæld (Ost.) at a height of 400 m. Ostenfeld 

 found this species as a gelatinous dark-red crust. It is also nientioned 

 by Wille (1. c. p. 21), and pronounced doubtful by Rostrup (Fær. Fl. p. 92). 



6. G. punctata Nagl. 



Occurs together with the above-mentioned species on Stereocaulon 

 at Thorshavn (Str.). 



Rostrup (Fær. Fl. p. 92) mentions G. janthina Niigl. as doubtful. 



7. Polycystis pallida Lemm.^ 



Found in Plankton from Sorvaagsvatn (Vaago). 



8. P. incerta Lemm.^ 

 Together with the above-mentioned. 



9. P. fusco-lutea Hansg. Prodromus II, p. 145, fig. 55, 

 Together with sonie other Chroococcaceæ in a dried collection from 



a ravine (Gjov) near Vaag (Syd.). 



10. Cælosphærium KUtzingianum Nagl. 



In a collection of algæ from Sand (Sando); and in Plankton from 

 the large lake near Ejde (Ost.); Sorvaagsvatn (Vaago); and the lake in 

 Vaags Ejde (Syd.). 



11. Merismopedia glauca (Ehrenb.) Nagl. 



Found by Rostrup (Fær. Fl. p. 90): »Amongst Sphagnum«. Occurs 

 rather commonly in the collections we have for exaniination. Also found 

 in Plankton from Sorvaagsvatn (Vaago); and Sandsvatn (Sando). 



12. M. punctata Meyen. 



Found in Plankton from Sorvaagsvatn (Vaago); and Sandsvatn 

 (Sando). 



13. M. tenuissima Lemm.^ 



In Plankton from Grothusvatn (Sando). 



14. Aphanothece micposcopica Nagl. 



In Plankton from Sorvaagsvatn (Vaago); the lake near Ejde (Ost.); 

 and Sandsvatn (Sando). 



^ Determ. by Mr. Lemmermann. 



