Contribution. I. ](}7 



«Diese der Lyngbya jadertina am nachsten stehende Art 

 iintersckeidet sich durch die sehr zarten Faden von alien 

 bisher beschriebenen marinen Lyngbya- Arten aus der Section 

 Hypheotlirix*. The species grows on rocks at high-water 

 mark in company with Calothrix, Cocliolum and other algae 



Distribution: Found at Vardo, Kjelmo, Pasvig and 

 Bugonaas, scarce. (It has also been found at Tromso, Ryo- 

 en and Gratangen in Tromso amt). 



Gen. Oscillaria (Bosc.) Thur. 

 Nostoch. p. 4; Boso. see. Thur. 1. c. 



Oscillaria neapolitana Ktitz. 



Phyc. gener. p. 185. 

 Descr. Oscillaria neapolitana Hauck, Meeresalg. p. 509. 

 Fig. „ „ Kutz Tab. Phyc. 1, t. 39. 



The species has been found in a lagoon at high-water 

 mark jointly with Nostoc, Nodularia and Polycystis. 



Distribution: Found at Bugonaas in Sydvaranger, lo- 

 cal and scarce. (It has also beeD collected at Tromso). 



Gen. Spirulina Turp. 



sec. Thur. Nostoch. p. 7. 



Spirulina tenuissima Ktitz. 

 Phyc. gener. p. 183. 

 Descr. Spirulina tenuissima Farl. New Engl. Alg. p 31. 



n „ Hauck, Meeresalg. p. 511. 



Fig. „ „ Ktitz. Tab. Phyc. 1, t. 37. 



„ „ Farl. 1. c. t. 1, fig. 4. 



„ „ Harv. Phyc. Brit. t. 105, C. 



Exsice. „ „ Wittr. et Nordst. Alg. exsicc. Nr. 395. 



The species occurs on rocks in the upper part of the 

 litoral zone together with other smaller algae, or found in 

 rock-pools at half tide together with Coilodesme bulligera^ 



