225 



Finally Wille (1. c. p. 27) mentions having seen forms, »some 

 of which bore a striking resemblance to some of Delponte's figures 

 (Sj)e('. Desm. Subalp. tab. VII, tig. 5), and some forms wbicb corres- 

 ponded closely to C. Mencghinii formå octangiilaris Wille (Fersk- 

 vandsalg. Novaj. Semlj. p. 4.'i, tab. XII, fig. 35). 



141. C. Regnesi Reinsch. 



Tbe specimens from the Færoes seem to correspond closely to 

 the forms mentioned by Nordstedt (Oesm. från Bornbolm p. 197); 

 cfr. \ar. montana Scbmidle Hedwigia 1895, p. 74, tab. 1, fig. 9^ 



S a n d 6. 



142. C. Nowæ Semliæ Wille. 



Ferskvandsalg. Novaj. Semlj. p. 46, tab. 13, fig. 45. 

 Long. — IQ fx; lat. = 12 /*; lat. isthm. = 9 ^m. 

 Kirkebokamp (Str.). 



143. C. stpjatum P>oldt. 



Skopen (San do). 



In Grothusvatn (San do) a small Cosmariiini was found wliich is 

 probably identical with C. Daniciim Borgs., but as I liave not seen the 

 arrangement of the granula I am not sure as to tlie correctness of the 

 determination. 



Long. == 16/t = lat. 



144. C. boreale nov. sp. Plate 7, fig. 10. 



C. minimum tam longum quam latum medio profunde con- 

 strictum sinu fere lineari in exteriore parte ampliata; semicellulæ 

 oblongæ basi dorsoqiie fere lineari, angulis late rotundatis, a vertice 

 visæ oblongæ. Membrana distincte granulate-punctata. Cellulæ in 

 muco inclusæ. Nuclei amylacei singuli. 



Long. = 14 a = lat.; lat. istbm. = 5,4 /w; crass. = 6 /j. 



Klalvken near Ivlaksvig (ISordo). 



Nearest related seenis C. suborthostichiim Rac. Desmidya Ciastoni p. 374, 

 tab. 6, fig. 14. 



145. C. portianum Arch. var. nephroideum Wittr. 

 Thorshavn and Svartafoselv (Str.); Sand (Sando). 



146. C. præmorsum Bréb. 



Long. ^ 48 .m; lat. ^ 38—40/^; crass. =- 27— 30/<. 

 Gliversrejn (Str.); Viderejde (Vid.). 



^ See also G. S. West: On variation in the Dcsmidicæ (Jonm. Linn. Societ. 

 vol. XXVII, p. 365). 



Botanj' of Ihc Færoes J5 



