555 



From (ijov 



Molen 



Ejde 



Ore 



Strender 



Glibre 



Skaalefjord 

 — Fuglefjord 



Nolso 



Betw. Kvalv. mul Thorsv. 

 From Kalbakfjord 



Hojvig 



Thorshavn 



(iliversnæs 



Kirkebd 



Velbestad 



Kvivig 



Vestmanhavn 



Saxen 



M id vang 



Sorvaag 



North side ofVaagd 



Troldhoved 



Store Dimon 



Tværaa 



Frodebo 



Trangisvaag 



Ord evig 



Famien 



Vaags Ejde 



Sumbo Holm 



Without habitai . . 



Osteri) Total 21 gatherings 



S t r 6 m 6 



Y a a u 6 



Sand 6 



S y d e r 6 



.V.) 



4 



2 



o — 



'11 



— 9 



Total 130 gatherings. 



The material has proved to be very homogeneous, and ns is 

 natura], the main part of the forms in question, taken collectively, 

 consists of altaehed or colony-forming genera. 



The material taken as a whole is characterized by the oceur- 

 rence of the following genera: — 



Amphipleura (Berkeleyaj, Cocconeis, Fragilaria (striatula) ; Gom- 

 phonema, Grammatophora, Licmophora, Navicnla (Schizonema), Si/- 

 nedra (especially investiens and affinis with their varieties). 



Isthmia nervosu 1 mav occur abundantly in some of the ga- 

 therings, without, however, being characteristic of the whole of the 



1 In a note to mc regarding a gathering without habitat Mr. Borgesen writes 

 tliat the alga (Plilota plumosa), as well as the diatoms occurring on it. are very 

 common everywhere along exposed coasts. The diatom is Isthmia nervosa. 



