List of Freshwater Algæ. 77 



Conj ugata. 



Desmidiaceæ. 



Peiiium Bréb.; De Bar. 



1. P. Libellula iFocke) Nordst., Desm. Bornh. p. 184. Peniam 

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

 flg. 1. 



Boldt, Desm. Grønland, p. ^0 (sub. nom. Penium closteroides] (Kung Oskars hamn). 

 Børgesen, Ferskvandsalg. Østgrønland, p. У (Hekla Havnj. 



Long. = 70— 80/^; lat. = 17/j. 



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



I^oc. 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, Атака, Kap Dalton, Jameson 

 Land, Sabine 0). 



Lat. = 2Ö/2. 



Found in two collections from "Vester Elv'. 



Lo c. Danmarks Havn. 



3. P. curtum Bréb., in Kutz Spec. Alg. p. 167. Cosmariiim curtum 



Ralfs, Brit. Desm. p. 109, tab. 32, fig. 9. Dysphinclium [Actinotaenium) 



Regelianum Näg., Gatt. einz. Alg. p. 1 10, tab. VI E. 



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

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

 Warren, Sabine 0). 



The specimens found quite agreed in size with those I have 



mentioned in my earlier paper (1. c). 



Long. = 43/i; lat. = 22 /i. 



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. 1Ü (Gaasefjorden). 

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



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



Lat. = 15 и. 



Loc. Danmarks Havn. 



Spirotænia Bréb. 



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

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



