94 M- Foslie. 



Descr. Elachista lubrica Aresch. Obs. Phyc. 8, p. 18. 

 Exsicc. » n » Alg. Scand. exsicc. No. 217. 



This species is litoral and sublitoral. In the former 

 case it occurs gregarious and at many places in great abun- 

 dance. It is usually fastened to Halosaccion ramentaceum 

 and Rhodomela lycopodioides, but often also to other species 

 as Fuci, Cystoclonium purpurascens, Enteromorpha compressa 

 and Desmarestia acuelata. In the sublitoral zone it has been 

 found scattered on a depth of 5 — 15 fathoms. It thrives best 

 on open coasts, but enters also nearly to the inner end of 

 the deeper bays. It bears zoosporangia in June, July and 

 August. 



Distribution: Common and abundant especially along the 

 open part of the coast. "J 



Fam. Coilodesmeae nob. 



Gen. Coilodesme Stromf. 

 Meeresalg. Isl. p. 173. 



Coilodesme bulligera Stromf. 



1. c. 

 Descr. Coilodesme bulligera Stromf. Algveg. Isl. p. 48. 

 Fig. „ „ t. 2, fig. 9-12. 



I found this species already in 1882, or the year before 

 Strbmfelt detected it at the coast of Iceland, but as I 

 then only found barren specimens, it was put a side till I 

 again met with it in 1887, bearing zoosporangia. 



The Finmarkian specimens seem, with reference to the 

 habit and external appearance, to differ somewhat from the 

 Icelandic ones. Only a few specimens that I collected last 

 year appear to coincide with the latter. The colour is, how- 

 ever, light olive brown. But almost all the specimens for- 

 merly taken are gutshaped, more or less inflated and very 



