List of Freshwater Algæ. 77 



Conjugata. 



Desmidiaceæ. 



Peiiium Bréb.; De Bar. 



1. P. Libellula (Focke) Nordst., Desm. Bornh. p. 184. Penium 



closteroides Ralfs, Børgesen, Ferskvandsalg. Østgrønland, p. 9, tab. 1, 



flg. 1. 



Boldt, Desm. Grønland, p. 40 (sub. nom. Penium closteroides] (Kung Oskars hamn). 

 Børgesen, Ferskvandsalg. Østgrønland, p. 9 (Hekla Havni. 



Long. = 70— 80 /i: lat. = 17,«. 



A single specimen seen in a collection from "Vester Elv". 



Lo c. Danmarks Havn. 



2. P. margaritaceum (Ehrenb.) Bréb., Ralfs, Brit. Desm. p. 149, 

 tab. 25, fig. 1 ; tab. 33, fig. 3. 



Børgesen, Ferskvandsalg. Østgrønland, p. 9 (Hekla Havn). 



Larsen, Freshw. Alg. East Greenl. p. 94 (Kordlortok. Amaka, Kap Dalton, Jameson 

 Land, Sabine 0). 



Lat. == 2b ft. 



Found in two collections from "Vester Elv'. 



Lo c. Danmarks Havn. 



3. P. curtum Bréb., in Kûtz Spec. Alg. p. 167. Cosmariam curtum 

 Ralfs, Brit. Desm. p. 109, tab. 32, fig. 9. Dijsphindium {Actinotaenium) 

 Regelianum Näg., Gatt. einz. Alg. p. 110, tab. VIE. 



Børgesen, Ferskvandsalg. Østgrønland, p. 9, 10 (Hekla Havn, Hold with Hope). 

 Larsen, Freshw. Alg. East Greenl., p. 94 (Kap Dalton. .lameson Land, Kap Borlase 

 Warren, Sabine 01. 



The specimens found quite agreed in size with those I have 

 mentioned in my earlier paper (1. c). 

 Long. = 43,«; lat. = 22«. 

 Loc. Danmarks Havn: Vester Elv. 



Cylindrocystis Menegh. 

 1. C. Brebissonii (Menegh.) De Bary, Conjug. p. 35, tab. 7, fig. E 

 1—22. 



Børgesen, Ferskvandsalg. Østgrønland, p. 10 (Gaasefjorden). 

 Larsen. Freshw. Alg. East Greenl. p. 90 (Kingorsuak, Kap Dalton). 



Some few specimens were seen in a collection from "Vester Elv". 



Lat. = lb u. 



Loc. Danmarks Havn. 



Spirotænia Bréb. 



1. Sp. condensata Bréb. in Ralfs, Brit. Desm. p. 179, tab. 34, fig. 1. 

 Long. = 90/^; lat. = 17//. 



