223 



Long. = 37 |U ; lat. = 24 fi; lat. isthm. = 5 i«. 

 Hojvig (StiO. 



128. C. venustum (Bréb.) Arch. 



Rostrup mentions having niet with this species (Fær. Fl. p. 90). 



I found it in gatherings from Hojvig and Thorsliavn (Str.). There 

 were no depressions in the middle of the seniicells in the specimens 

 collected by me. 



129. C. Phaseolus Bréb. 



Var. typica Klcbs. Desm. Ostpreus. tab. 3, fig. 41 — 42. 



Kirlvebokamp (Str.); Klakken near Klaksvig (Bord 6); Skopen and 

 Grothusvatn (Sando). 



Var. elevata Nordst. 



Tliorshavn (Str..); Skopen (Sand 6). 



Var. achondra Boldt. Formå. 



F. færoensis differt longitudine cellulæ præ latitudine paululum 

 minore. Cfr. Borge, Alg. Not. (Bot. Not. 1897) p. 212, tab. 3, fig. 2. 

 Long. = 36; lat. = 40;«. 

 In Plankton from Sandsvatn (Sand o). 



130. C. subtumidum Nordst. 



Mr. Lemmermann very kindly tells me that lie has seen tliis species 

 in Plankton from Sorvaagsvatn (Vaago). 



131. C. Scenedesmus Delponte. 



The specimens from the Færoes bore a rather close resemblance 

 to my figure in »Ferskvandsalg. fra Østgrønl.« p. 20, tab. 1, fig. 14. 

 Long. = 43 ;m; lat. = 46 /i*; lat. isthm. = 11 ;W. 

 Watercourse near Tliorsliavn (Str.); Skopen (San do). 



132. C. ellipsoideum Elfv. 

 Long. — 30 fi; lat. = 25 jU. 

 Klakken near Klaksvig (Bor do). 



133. C. moniliforme (Turp.) Ralfs. 



Found by Rostrup (Fær. Fl. p. 90). Appears in gatherings from ra- 

 vine near Vestmanhavn (Str.); and from Klakken near Klaksvig (Bordo). 



134. C. tinctum Ralfs. 



Rostrup Fær. F'l. p. 91) mentions this species; it seems to be rather 

 common. 



135. C. Schliephackeanum Grun. 



The specimens from the Færoes were just Hke Nordstedt's fig. 

 15a (Desm. arct. p. 24, tab. 7). 



