KONGL. SV. VET. AKADKMIENS HANIJLINGAK. BAND 20. N:0 5. 193 



Localities: The Norwegian Polar Sea: Nordlanden at Bodo; Finmarken at North 

 Cape pretty plentiful. 



Baffin Bay: found drifting in Davis Strait; no special place noted. 



Gen. Erythrotrichia Aresch. 



Phyc. Scand. p. 435. 



Erythrotrichia ceramicola (Lyngb.) Aresch. 



1. c. p. 436. Conferva ceramicola Lyngb. Hydr. Dan. p. 144. 

 Descr. Erythrotrichia ceramicola Aresch. 1. c. 

 Fig. Bangia ceramicola Haev. Phyc. Brit. t. 317. 



Syn. Erythrotricliia ceramicola Kleen, Nordl. Alg. p. 24. 



Habitat. Kleen has found this species growing on literal algae. 

 Locality:. The Norwegian Polar Sea: Nordlanden, pretty common. 



Series PUOOIDEJE (Ag.) J. G. Ag. 

 Alg. Med. p. 24; Ag. Syst. Alg. p. XXXV; lira. mut. 



Fam. FUCACE^ (Ag.) J. G. Ag. 



Spec. Alg. 1, p. 180; Ag. 1. c. p. XXXVII; lim. mut. 



Gen. Himauthalia Lyngb. 



Hydr. Dan. p. 36. 



Hiraanthalia lorea (L.) Lyngb. 

 1. c. Fucus loreus L. Syst. Nat. Ed. 12, 2, p. 716. 

 Descr. Himanthalia lorea J. G. Ag. Spec. Alg. 1, p. 196. 

 Fig. » » Harv. Phyc. Brit. tab. 78. 



Exsicc. » » Aresch. Alg. Scand. exsicc. N:o 2 et 251. 



Syn. Fucus loreus Ghnn. F1. Nory. 2, p. 125. 

 « « Wg. F1. Lapp. p. 499. 



Himanthalia lorea J. G. Ag. Enum. 



•> » Aresch, Phyc. Scand. p. 259. 



» » Kleen, Nordl. Alg. p. 31. 



Ulva pruniformis Gunn. F1. Norv. 2. p. 89; ex parte. 



Habitat. This alga generally grows gregarious within the lower part of the literal 

 region. At Nordlanden it is sterile in May; at the beginning of June the receptacles 

 commence to develop and within a few weeks attain more than one foot in length. 



K. Vet. Akad. Handl. Bd 20. N:o 6. •^ J 



