KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 20. N:0 5. 193 



Localities: The Noncegian Polar Sea: Nordlanden at Bodö; Finmarken at North 

 Cape pretty plentifnl. 



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



Gen. Erythrotrichla Aresch. 



Phyc. Scaud. p. 435. 



Erythrotrichia ceramicola (Lyngb.) Aresch. 



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

 Descr. Erytlirotiiehia ceramicola Aresch. 1. c. 

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



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



Hahitat. Kleen has found this species growing on litoral algfe. 

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



Series PUOOIDE.^ (Ag.) J. G. Ag. 

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



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



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



Gen. Himanthalia Lyngb. 



Hydr. Dan. p. 36. 



Himanthalia lorea (L.) Lyngb. 

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

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

 Fig. a .) Harv. Phyc. Brit. tab. 78. 



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



Syn. Eucus lorens Gunn. Fl. Norv. 2, p. 125. 

 i) » Wg. Fl. Lapp. p. 499. 



Himanthalia lorea J. G. Ag. Enum. 



» » Aresch, Phyc. Scand. p. 259. 



» » Kleen, Nordl. Alg. p. 31. 



Ulva pruniforrais Gunn. Fl. Norv. 2. p. 89; ex parte. 



Hahitat. This alga generally grows gregarious within the lower part of the litoral 

 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 ene foot in length. 



K. Vet. Akad. Handl. Bd 20. K:o 5. ""^ 



