272 KJELLMAN, THE ALG OF THE ARCTIC SHA. 
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 Fleinver. 
Fam. SPHACELARIACE J. G. Ae. 
Alg. Med. p. 27. 
Gen. Cladostephus (Ac.) J. G. Aa. 
Spec. Alg. 1, p. 41; Ac. Syn. Alg. p. XXV; spec. excl. 
Cladostephus spongiosus (Licutr.) Ac. 
l. c. p. XXVI. Conferva spongiosa Licurr. Fl. Scot. p. 983. 
Descr. Cladostephus spongiosus J. G. Ac. Spec. Alg. 1, p. 43. 
Fig. » » Harv. Phye. Brit. 138. 
Ezsice. » » Arrscu. Alg. Scand. exsicc. N:o 172. 
Syn. Cladostephus spongiosus ArEscH. Phye. Scand. p. 388. 
» » KuirEn, Nord]. 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 Norwegian Polar Sea: Nordlanden scarce on the shores of Westfjord. 
Baffin Bay: the coast of Greenland; the special locality is not noted. 
Gen. Stupocaulon Ktrz. 
Phyc. gener. p. 293. 
Stupocaulon scoparium (L.) Korz. 
I. c. Conferva scoparia L. Spec. Pl. Ed. 2, p. 1635. 
Descr. Stupocaulon scoparium Kurz. Spec. Alg. p. 466. 
Fig. » » Tab. Phye. 0, t. 96: 
Syn. Stupocaulon scoparium Zeer, Zweite d. Polarf. p. 84. 
Locality: This species is said by Zetter |. 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. 
