56 



H.JONSSON 



Table 2. The Distribution of the 76 species not common to all 



the coastal districts (continued). 



To illustrate more distinctly llo^Y the species with a north- 

 eastern distribution (A) and those with a south-western distribution 

 (B) intermingle in N., NW. and SW. Iceland I subjoin the following 

 figures taken from the preceding table: 



B 



Notes on the species. Of the 4 species (A, 1 4, Tab. 2) 

 which have been found only in E. Iceland, Nos. 1 and 3 occurred 

 in great abundance in several of the fjords, while Omphalophyllum 

 was found only in ReySarfjor5ur, where it occurred abundantly, 

 and Acrosiphonia in one place only. Delesseria Baerii, I suppose 

 (31, p. 140), has originated from either E. or N. Iceland. 



Tarnerella is most common in E. Iceland, and in addition to 

 the habitat in N. Iceland which has been published (31, p. 135) has 

 been found by B. Saemundsson in Steingrimsfjor5ur in the most 

 western part of the north coast; consequently it must have a wide 

 distribution along this coast. With regard to Lithothamnion foecan- 

 dum and Laminaria fceroensis it must be assumed that thev are 



/ v 



more frequent in E. and N. Iceland than is known at present, and 

 as the latter species occurs in the Faeroes, it may well be expected 

 to be met with on other parts of the coast of Iceland. 



