247 



/?. bicuspidatum Borge. 



In gatheriiigs Ironi Thorshavn and Hojvig (Str.). 



278. O. papvulum Rabenh. 



From Thorshavn (^Str.); also I'ound by Wille (1. c. p. 24 . 



279. O. capitatum Wolle var. longispinum (Moeb.) Lemm. 



In Plankton from Sorvaagsvatn (Vaago). Determined by Mr. Lem- 

 mermann. 



Order XIX. CHÆTOPHORACEÆ. 



280. Chætophora elegans (Roth.) Ag. 



Found by Lyngbye (Hydrophyt. p. 192) »Etiam in lacu Vandsdalsvatn 

 in rupe Qvalboefjeld trans Karagjov Suderoe Færoæ, Fontinali antipy- 

 reticæ adhærescens« , i. e. at the same place as >Conferva nana"- (see 

 above p. 207) and this species was also seen mixed together with it. I 

 have found specimens from Velbestad (Str.). 



281. Stigeoclonium tenue Rabenh. 



Found in gatherings from Gliversrejn near Thorshavn (Str.); and 

 Næs (Ost). Wille (I. c. p. 58) also mentions having found it, and as 

 Lyngbye's fig. 2 A in Hydrophyt. tab. 52 of Conferva nana somewhat 

 resembles a Stigeoclonium, he is of opinion that Lyngbye must also have 

 found it, but strangely enough this species does not occur among the 

 specimens of Conferva nana Lyng. in Lyngbye's Herbarium, Copenhagen. 



282. Draparnaldia glomerata Ag. 



Found by Lyngbye (Hydrophyt. p. 189) »Ad saxa rivulorum Færoen- 

 sium, ut ad Velbestad, et Qvalboe Suderoe«. I have seen specimens 

 from a watercourse near Thorshavn and Gliversrejn (Str.); Famien- 

 vatn (Syd.). 



283. IVIicrothamnion Kiitzingianum Nagl. var. strictissima (Rabenh.) 

 Hansg. 



Amongst some other algæ in a gathering from Nol so. 



284. Trentepohlia aurea (L.) Mart. 



This species seems to be rather conimon on damp rocks, in 

 ravines and such like piaces. It has been already mentioned by 

 Lyngbj^e (Hydrophyt. p. 134) under the name of Ectocarpus aureus 

 »ad rupes, fluviis rivulisqiie contiguas, Norvegiæ et Færoæ, sat fre- 

 quens«. In Lyngbye's Herbarium two specimens are to be found, 

 one labelled »in fissura rupis ad Waag, Suderoe«, and another »in 

 rupe maritima prope Thorshavn«. 



I have seen specimens from ravines near Vestmanhavn (Str.); 

 Tvaeraa and on rocks near Kvalbo (Syd.). 



