272 KJELLMAy, THE ALG^ OF THE AECTIC SEA. 



Habitat. This species lives at a depth of several fathoms, attached to shells. 

 Geogr. Distrib. Found only within the Norwegian Polar Sea. 

 Locality/: Nordlanden at Fleinvasr. 



Fam. SPHACELARIACE.E J. G. Ag. 



Alg. Med. p. 27. 



Gen. Oladosteplius (Ag.) J. G. Ag. 



Spec. Alg. 1, p. 41; Ag. Syn. Alg. p. XXV; spec. excl. 



Cladostephus spongiosus (Lightf.) Ag. 



1. 0. p. XXVI. Conferva spongiosa Lightf. ¥1. Scot. p. 983 

 Descr. Cladostephus spongiosus J. G. Ag. Spec. Alg. 1, p. 43. 

 Fig. » » Hart. Phyc. Brit. 138. 



Exsicc. '< » Aresch. Alg. Scand. exsiee. X:o 172. 



Syn. Cladostephus spongiosus Aresch. Phyc. Scand. p. 388. 

 » » Kleen, Nordl. Alg. p. 35. 



Habitat. This alga occurs in the litoral zone in rock-pools. It prefers exposed 

 localities and is somewhat gregarious, attached to stones. I do not know at what season 

 it develops reproductive organs in the Arctic Sea. There are certainly to be found in 

 the herbarium of the Copenhague Museum specimens from Greenland with gametangia 

 (zoosporangia multilocularia), but the time when they were collected is not noted. Only 

 sterile individuals are known from the Norwegian Polar Sea, where this species has been 

 collected in summer. 



Geogr. Distrib. The southern part of the Norwegian Polar Sea and Baffin Bay. 

 Its proper range is certainly beyond the limits of the Arctic Sea. The most northern 

 point where it has been taken is Westfjord in Nordlanden. 



Localities: The Soricegian Polar Sea: Nordlanden scarce on the shores of Westfjord. 



Baffin Bay: the coast of Greenland; the special locality is not noted. 



Gen. Stupocaulon Ktxz. 



Phyc. gener. p. 293. 



Stupocaulon scoparium (L.) Kutz. 



1. c. Conferva scoparia L. Spec. 1^1. Ed. 2, p. 1636. 

 Descr. Stupocaulon scoparium Ktttz. Spec. Alg. p. 466. 

 Fig. « » Tab. Phyc. 5, t. 96. 



Si/ii. Stupocaulon scoparium Zeller, Zweite d. Polarf. p. S4. 



Locality: This species is said by Zeller 1. c. to have been brought home from 

 Greenland by the second German Polar expedition, probably from Sabine Island on 

 the east coast. I have not seen any specimens. 



