£2 M. Foslie. 



Fig. Myrionema strangulans Harv. ]. c. 



„ „ Kutz. Tab. Phyc. 7, t. 93 



„ „ maculiforme Kiitz. 1. c. 



Exsicc. „ ,, vulgare Aresch. Alg. Scand. exsicc. No. 415. 



B „ Hauck et Richt. Phyc. univ. No. 169. 



Syn. Myrionema vulgare Kleen, Nordl. Alg. p. 35. 



Litoral, attached to TJlvacece and Cladophora, bearing 

 zoosporangia in August. 



Distribution: Found at Svserholt and Vardo, scarce. 



Fam. Lithodermacese Hauck, 



Meeresalg. p. 402. 



Gen. Lithoderma Aresch. 

 Obs. Phyc. 3, p. 22. 



Lithoderma fatiscens Aresch. 



1. c. p. 23. 

 Descr. Lithoderma fatiscens Aresch. 1. c. 

 Fig. u » Hauck, Meeresalg. fig. 177. 



„ „ Kjellm. N. Ish. Algfl. t. 26, fig. 6—7. 



The species is sublitoral, growing on stones and Litho- 

 thamnia on a depth of 3 — 20 fathoms. Besides typical spe- 

 cimens I at several places also met with a pretty large 

 number of small and barren ones fastened to Lithothamnia. 

 They resemble Lithoderma but are forming numerous small 

 spots on the host plant. I think they are referrible to the 

 species in question. 



Distribution: Found at Kjelmo, Vadso, Vardo, Mehavn 

 and Lebesby, rather scarce; and at Rjbllefjord 3 local but 

 pretty plentiful. 



Fam. Elachistaceae Rke 



Pstseefl. p. 39. 



