List of Freshwater Algæ. 



83 



Specimens agreeing very well with Nordstedt's description and 

 figure were found in two collections from Vester Elv. 

 Long. = 62—65,« ;y:lat. = 40—47 n. 

 Loc. Danmarks' Havn. 



19. C. spetsbergense Nordst., Desm. Spetsb., p. 27, tab. 6, fig. 3. 



Larsen, Freshw. Alg. East GreenL p. 89 Liverpool Kyst in Hurrj- Inlet). 



This arctic species hitherto only known from Jan Mayen, Spitz- 

 bergen, Nova Zembla and the above mentioned locality in East 

 Greenland has been found in two collections from Vester Elv. 



Long. = 61/7, lat. -=32//. 



I^oc. Danmarks Havn. 



20. C. subcrenatum Hantzsch.in Rabenh. Alg. No. 1213; Nordstedt, 

 Desm. arct., p. 21. tab. 6, fig. 10 -11. 



Boldt, Desm. Grønl. p. 18 (Kung Oskars hamn). 

 Børgesen, Ferskvandsalg. Østgrønland, p. 14 (Hekla Havn). 



Larsen, Freshw. Alg. East Greenl., p. 89 (in several localities from Kordlortok 

 65° 40' to Sabine 74° 30'). 



Long. = 32/7 ; lat. =-29//. 



I^oc. Found in two collections from Vester Elv. 



21. C. subspeciosum Nordst., Desm. arct. 

 p. 22, tab. 6, fig. 13. 



Børgesen. F"erskvandsalg. Østgrønland, p. 16. 



A form agreeing very well with the de- 

 scription and figure of Nordstedt was found 

 in a collection from Lille Snenæs. 



Long. = 42«; lat. = 30//. 



A zygospore was found of this species 

 (Fig. 4). This was globose, furnished with rather 

 long furcate-emarginate spines, each of which 

 arises from a broadly conical base provided 

 with teeth. 



Lat. zygosp. cum. spin. = 54//. 



Lat. zygosp. sine spin. = 40//. 



Loc. Lille Snenæs. 



Fig. 4. C. subspeciosum Nordst. 

 A Zygospore. (■'■■"' ii.) 



22. C. Turpinii Bréb., Liste Desm., p. 127, lab. 1, fig. 11. 



Boldt, Desm. Grønl., p. 24 (Kung Oskars hamn). 



Børgesen, Ferskvandsalg. Østgrønland, p. 13, tab. 1, fig. 7 (Hekla Havn). 



Larsen, Freshw. Alg. East Greenl., p. 90 (in several localités from Kordlortok 

 65° 40' to Sabine 74° 30 ). 



The specimens found agreed very well with the form (forma 

 gallica Lund.) mentioned in my earlier paper. 



Long. = 62//; lat. =54/^. 



Loc. Danmarks Havn: Vester Elv. 



