78 ■•"• liOHC.KSlCN. 



The size ol' llio plaiil corrcspoiids closely willi llial Nouustedt 

 givi's (or Ihc |)lanl I'ound at Mosel Ray in Spil/bergen (Nordst., 

 Desni. arcl. p. lö) bul il is imich smaller than llie size West gives for 

 the plant in his M()nogra|)h of Ihe British Desinidiaeeæ, vol. I, j). 38. 



This species has not earlier been lound in lùisl Greenland and 

 it is also not mentioned from West Greenland (cfr. Larsen, II). Only 

 found in few specimens in Vester Elv. 



l.oe. Danmarks Havn. 



Closteriiini Nitzsch. 



1. Cl. acutum (Lyngb.) Bréb., in Ralfs' Brit. Desm., p. 177, 

 tab. 80, fig. 5. 



Horgesen, Ferslvvandsalg., Østgrønland, p. 10 (Hekla Havn). 



Larsen, Frcslnv. Alg. EastGreenl. p. SI (Kordlortok, Liverpool Kyst in Hurry Inlet). 



Loc. Danmarks Havn. Only a tew specimens found in Vester Elv. 



Lat. cell. = 11 fj.. 



2. CI. striolatum Ehrenb., Entw. d. Inf. p. ()8. Ralfs, Brit. Desm., 

 p. 170, tab. 29, fig. 2. 



Boldt, Desm. Grønt. p. 42 (Kung Oskars hamn). 



Børgesen, Ferskvandsalg. Østgrønland, p. lu (Hekla Havn, Røde 0). 



Larsen, Freshw. Alg. East Greenl., i). 82 (Amaka, Liverpool Kyst in Hurry Inlet). 



Only a single specimen was found, the breadth of w^hich was 50 w. 



I^oc. Danmarks Havn: Vestci" I^lv. 



Ploiirotænium Näg. 



1. P. truncatum (Bréb.) Näg., Gatt. einz. x\lg., p. 104. 



Only a single specimen found in a collection from Vester Elv. 



Long. = 400^.; lat. = 54 /j. 



In size it agrees very w'ell with the measurements given by 

 NoRDSTEDT for plants found in Spitzbergen and Bear Island (Nord- 

 stedt, Desm. Spetsb. p. 26). 



This species w^as not earlier recorded from East Greenland but 

 it is known from West Greenland (Larsen, II, p. 346). 



Log. Danmarks Havn. 



Tetniemorus Ralfs. 

 1. T. lævis (Kùtz.) Ralfs, Brit. Desm. p. 146, tab. 24, fig. 3. 

 /9 attenuatus Wille, Ferskvandsalg. Nov. Semlja, p. 58, tab. 14, 

 fig. 77. 



Boldt, Desm. Grønl. p. 42 (Kung Oskars hamn). 



Larsen, Freshw. Alg. East Greenl. p. 101 (Amaka Kap Dalton). 



Only one half-cell was found ; the cell-membrane was minutely 



punctate. 



Lat. cell. = 28«. 



Loc. Danmarks Havn: Vester Elv. 



