88 l". Udhokskn. 



T. al. cell, siiio spin. = 33/^. 



Foiiiui in colk'clions from Vester Elv. 



i.oe. DamiKirk.s Ihivii, 



Hyalotheca Ehrenb. 



1. H. dissiliens (Dilhv.) Bréb. in Halls Hril. Desni. p. 51, lab. 1, 

 fig. 1. 



Holdt. Desm. Gronl. p. VA (Kung Oskars liamn'. 

 IJorgcsen, Fcrskvandsalg. Ostgroiiland. p. 3'i ( Hekhi Havn). 



karsen, Freslnv. Alg. Kast Greenk p. 9;{ (Kalkefjeld, Jameson Land, Liverpool 

 Kyst in Hurr\' Inlet, Sabine ØK 



This species seems to be rather common; var. tridentula Nordst. 

 (Sydl. Norges Desm. p. 48, fig. 23) was found and most probably also 

 other forms occurred. 



Found in several collections from Vester Elv. 



Log. Danmarks Havn. 



Desmidiiini Ag. 



1. D. Swartzii Ag., Syst. Alg. p. 9. Ralfs, Brit. Desm., p. 61, 

 tab. 4. 



Børgesen, Ferskvandsalg. Østgrønland, p. 32 (Hekla Havn). 

 Larsen, Freslnv. Alg. Kast Greenk, p. 90 (Kordlortok, Ainaka). 



Found in two collections from Vester Elv. 

 Lo c. Danmarks Havn. 



Zygnemaceæ. 



Zygnema (Ag.) De Bary. 



Z. spec. 



Filaments of a sterile Zygnema were found rather richly in a 

 collection from Vester Elv. A few of the filaments had rhizoids; 

 perhaps we have to do with Zygogoniiim ericetorum. 



Also in a collection from "Lille Snenæs" a sterile Zygnema. 



Chlorophyceæ. 



Pleurococcaceæ. 



Pleurococcus Menegh. 

 1. P. vulgaris Menegh., Näg. Gatt. einz. Alg. p. 64, tab. IV E, fig. 2. 



Børgesen, Ferskvandsalg. Østgrønland, p. 36 (Danmarks 0, Røde 0, Hekla Havn). 

 Very few- cells were found on bones. 

 Loc. Stormbust. 



