KONGL. SV. VET. AKADEMIENS HANDLINGAK. BAND. 20. N:0 5. 317 



Syn. Bryopsis plumosa Ashm. Alg. Ha3'es, p. 96. 

 » » Croai.l. Fl. Disc. p. 460. 



« » Kleen, Nordl. Alg. p. 40. 



Habitat. On the north coast of Norway it grew in rock-pools in the litoi^al zone, 

 scattered, attached to stones or Lithothamnion polymorphura. The Norwegian .specimens 

 collected in July and August are sterile and very feebly developed. 



Geogr. Distrib- Known from the Norwegian Polar Sea and Baffin Bay. In the 

 latter region it goes far north wards, being reported by Ashmead from Smith Sound 

 between Lat. N. 78° and 82°. 



Localities: The Norwegian Polar Sea: Nordlanden, rather rare at Fleinvajr and 

 Röst. 



Baffin Bay: The west coast of Greenland, exact locality unrecorded; Smith Sound. 



Fam. CHARACIACEiE (Näg.) Witte. 



Gotl. och Öl. Alg. p. 32; N^g, Gått. einz. Alg. p. 64, excl. gen. 



Gen. Oharacium Al. Braun. 



in KiJTZ. Spec. Alg. p. 208. 



Characium Marinum nob. 



Descr. et Fii/. Characium spec. Kjellm. Spetsb. Thall. 2, p. 57 et t. 4, fig. 10. 



Habitat. Of this alga, for which I think tit now to propose a special name, I 

 have found only one individual. This was attached to Pylaiella litoralis and furnished 

 M'ith ripe zoospores, when taken in the month of October. 



Locality: The Greenland Sea: Musselba}' on the north coast of Spitzbergen. 



Gen. Codiolum Al. Braun. 



Alg. unic. p. 19. 



Codiolum Longipes Foslie. 



Aret. Havalg. p. 11. 

 Descr. et Fig. Godiolum longipes Poslie 1. c. et t. 2, fig. 4. 

 Esssico. » » » in Witte. et Nordst. Alg. exsioo. N:o 458. 



Addition to the descrii}tion of the species. The stipe does not always pass into the 

 club-head so without a limit, as appears in the ligures of Foslie. Among the speci- 

 mens kindly coramunicated to me by Foslie there are several that accord nearly with 

 C. gregarium Al. Braun in regard to the shape of the club-head. I think 1 ought to 

 point out this fact, because it shows that C. longipes is a species very slightly diffe- 

 rentiated from C. gregarium. 



