316 KJELLMAN, THE ALG OF THE ARCTIC SEA. 
(?) Gen. Bulbocoleon Princsu. 
Morph. Meeresalg. p. 8. 
Bulbocoleon Piliferum Prrnesu. 
line: 
Deser. et Fig. Bulbocoleon piliferum 1. c. et t. 1. 
Syn. Bulbocoleon piliferum Crenk. Bericht. p. 24. 
Alabitat. It lives endophytic in other alge. I have found it in Dumontia filifor- 
mis and Myrionema strangulans. I have seen only sterile individuals. 
Geogr. Distrib. Found within the Polar Sea at Nordlanden on the coast of Nor- 
way and in the White Sea. I cannot state any exact localities. 
Fam. DERBESIACEZ Tuur. 
in Le Jou. Liste Alg. Cherb. p. 14. 
Gen.. Derbesia Souirr. 
Ann. d. Se. p. 158. 
Derbesia Marina (LyneGs.) Soumr. 
1. c. Vaucheria marina Lynas. Hydr. Dan. p. 79. 
Descr. et Fig. Derbesia marina Souter, 1. c. et t. 9. fig. 1—17. 
Habitat. It grows in the Polar Sea in the deeper parts of the sublitoral zone, 
in 10—20 fathoms, attached to Lithothamnion soriferum and corals. I have found it 
only on an exposed coast, in small number. It bore almost ripe zoosporangia at the 
end of August. 
Geogr. Distrib. Known only from the Norwegian Polar Sea. 
Locality: Finmarken at Gjesver. 
Fam. BRYOPSIDE Tuur. 
In Le Jou. Liste Alg. Cherb. p. 14. 
Gen. Bryopsis Lamour. 
Ess. p. 281. 
Bryopsis Plumosa (Hups.) Ag. 
Spec. Alg. 1, p. 448. Ulva plumosa Huns. Fl. Angl. p. 571. 
Descr. et Fig. Bryopsis plumosa Harv. Phyce. Brit. t. 3. 
Exsice. » » Arescu. Alg. Scand. exsicec. N:o 422. 
