known from there; to the hitter should be added 1 species 

 [Calothrix scopulonmi) found by N. Hartz in Heklahavn and 

 not before mentioned. Thus we know for the present 1 14 species 

 from East Greenland. 



From West Greenland 156 species (to which number 

 Actinococcus subcutaneus should be added) are enumerated by 

 Rosenvinge, but on account of a different limitation of the 

 species belonging to the three above mentioned genera (o: Acro- 

 siphonia, TJlotlirix and Sphacelaria) 7 species must be added 

 to this number, besides 1 species, Microsyphar Polysiphonice 

 Kuck., not formerly mentioned from West Greenland. Thus the 

 complete number of species from West Greenland is 165. All 

 Greenland has 176 species. 



Kruuse's collections have greatly amplified our knowledge 

 of the marine algæ of East Greenland; the number of species 

 has been considerably increased, and the distribution of the 

 marine algæ along the coast is now far better known than before. 

 103 species of the 114 East Greenlandic species are also found 

 on the western coast. The 11 species occurring only on the 

 eastern coast are reported by Rosenvinge (1. с. p. 177), still 

 it ought to be mentioned that Alaria flagellaris should be 

 regarded as identical ^\\h Alaria esculenta f. pinnata. Thus the 

 latest collections from the eastern coast furthermore confirm 

 Rosenvinge 's statement as to the difference between the 

 marine flora of East and West Greenland (I.e. p. 176 — 178). 

 As both Alaria esculenta f. pinnata and A.laria grandifolia 

 are now known from East Greenland and moreover Rhodochorton 

 intermedium Kjellm. from Spitsbergen is identic with Rhodo- 



Avhich are not included in this number, and not at all mentioned in 

 the following list, as Kruuse is not able to give any certain state- 

 ment as to their habitats and does not remember whether they were 

 growing loose or fastened to the bottom. Though it is scarcely probable 

 that these species occur fastened to the bottom in East Greenland, I still 

 mention them, for the purpose of calling the attention to them of future 

 investigators of the eastern coast of Greenland. 



