11(5 M. Fosiie. 



lowii) and sublitoral (f. Farloivii). In the former case it 

 grows on rocks and shells (Mytilus) or attached to other 

 algae, as Rhodymenia palmata, Halosaccion ramentaceum and 

 Qigartina mamillosa in the lower part of the zone. In the 

 latter case it has been found fastened to JDesmarestia acule- 

 ata on a depth of 2 — 5 fathoms. It seems to occur only 

 on open coast and to thrive best in much exposed localities. 

 Specimens furnished with zoospores have been taken in July 

 and August. 



Distribution: Found at Kjollefjord, pretty plentiful 

 but local, Mehavn, rather scarce, and at Finkongkjeilen, 

 scarce. 



Monostroma saccodeum Kjellm. 

 N. Ish. Algfl. p. 365. 



f. typica. 

 Deser. Monostroma saccodeum Kjellm. 1. c. 

 Fig. „ „ „ „ t. 28, fig. 1-10. 



f. cylindracea Kjellm. (nob.) 

 Descr. Monostroma cylindreaceum Kjellm. 1. c. p. 363. 

 Fig. „ „ „ „ t. 30. 



I have often met with M. cylindraceum but especially 

 M. saccodeum along the coast of East-Finmarken as well as 

 farther south, but I have been unable to find any real limit 

 between them. I consequently consider them as different 

 forms of the same species, regarding M. saccodeum the typi- 

 cal one. 1 I have even seen specimens of f. cylindracea which 

 nearly approache M. lubricum Kjellm. 



The present plant is litoral, growing in pools in the 

 upper part of the zone, on stones, shells of Balanidae, or fa- 

 stened to other algae, as Fuci, Gigartina mamillosa, Rhodo- 



1. I want here to remark, that I some years ago probably have distri- 

 buted M. angieava or another species under the name af M. sacco- 

 deum. 



