239 



his figure and the specimen in his herbarium prove that it cannot 

 possibly be this species. Lyngbye has also labelled il: — »Massa 

 deformis, viridis, gelatinosa«. 



233. Palmodactylon simplex Niigl. 

 Wille (1. c. p. 24) mentions this species. 



234. Botpyococcus Braunii Kiitz. 



Found in Plankton from Sorvaagsvatn (Vaago); and the lake near 

 Ejde (Ost.). 



235. Dictyosphæpjum Ehrenbergianum Niigl. 

 In a gathering from Trangisvaag (Syd.). 



Order XIII. PLEUROCOCCACEÆ. 



236. Palmella mucosa Kiitz. 



Nolso; Trangisvaag (Syd.). 



237. P. uvæformis Kiitz. 



I mcntion it hei'e under this name, but it is doubtless a phase of devclopment 

 of Draparnaldia gloinerata. 



Gliversrejn near Thorhavn (Str.). 



Lyngbye's Palmella botryoides (Hydrophyt. p. 205) is a Lichen. 



238. Glæocystis vesieulosa Nagl. 



In differcnt gatherings from Thorsliavn (Str.); Wille (1. c. p. 24) also 

 reports having found this species in gatherings from the Færoes. 



239. G. Gigas (Kiitz.) Lagerh. 



Nolso; in Plankton from the lake near Ejde (Ost.). 



240. Pleurococcus vulgaris (Grev.) Menegh. 



Is very commonly seen on houses and »Kælde« (a kind of 

 outhouse) in the form of a covering, often attaining lo the thickness 

 of a millimelre or more. This species, as also mainlained by Wille 

 (1. c. p. 25), is undoiibtedly identical with Ihe Bijssus botryoides 

 mentioned by Landl^ as follows: »Byssus botryoides • — in Danish: 

 grape-like crusl of dust — is the green powder, which occurs on 

 wooden walls of houses on the side that turns from the sun«. 



241. Acanthococcus hirtus (Reinsch.) Lagerh. 



Found in a gathering from Gliversrejn (Str.); and in some dried 

 material from »Gjov« near Vaag (Syd.). 



^ -»Byssus botryoides, paa dansk : Drueartet Støvskorpe er det gronnc Pulver, 

 der sætter sig paa de med Brædder beklædte Husvægge paa den Side, som vender 

 fra Solen«. (Forsøg til en Beskrivelse over Færoerne p. 23.'}). 



