KONGL. SV. VET. AKADEMIENS HANDLINGAE. BAND. 20. N:0 5. 249 



Ralfsia verrucosa (Aresch.) J. G. Ag. 



Spec. Alg. 1, p. 62. Cruoria verrucosa Ahesch. Alg. Pugill. p. 264. 

 Descr. Ealfsia verrucosa J. G. Ag. 1. c. 

 Fig. » » KtJTz. Tab. Phyc. 9, t. 77. 



Syn. Ealfsia verrucosa Kleen, Nordl. Alg. p. 33; ex parte. 



Habitat. It is literal, attached to stones or shells. It prefers sheltered bays, 

 but grows also on exposed coasts. In the Polar Sea it lives scattered in small numbers 

 and has only been found sterile here. 



Geogr. Distrib. Known only from the Norwegian Polar Sea. Its northernmost 

 place of occurrence is the south coast of Magero about Lat. N, 71°. 



Localities: The Norwegian Polar Sea: Nordlanden, common according to Kleen; 

 Finmarken scarce on the south coast of MagerO. 



Fam. CHORDARIACE^ (Ag.) Fael. 



New. Engl. Alg. p. 83; Ag. Syst. Alg. p. XXXVI; lim. mut. 



Gen. Chordaria (Ag.) J. G. Ag. 



Alg. Syst. 2, p. 62; Ag. Syn. Alg. p. XII; lim. raut. 



Chordaria flagelliformis Mull. 

 PL Dan. t. 650. 



f. typica. 



Descr. Chordaria flagelliformis J. G, Ag. Spec. Alg. 1, p. 66; excl. var. 



Fig. » » Haev. Phyc. Brit. t. 111. 



Exsicc. » » Aresch. Alg. Scand. exsioc. N:o 97. 



f. chordceformis Kjellm. 

 Spetsb. Thall. 2, p. 28. 

 Descr. et Fig. Chordaria flagelliformis f. chordseformis Kjellm. 1. c. at t. 1, fig, 13 — 15. 



f. ramusculifera Kjellm. 

 1. c. p. 29. 

 Descr. et Fig. Chordaria flagelliformis f. ramusculifera Kjellm. 1. c. et t. 1, fig. 10 — 12. 

 Syn. Chordaria divaricata Gobi, Algenfl. Weiss. Meer. p. 70, huio formte proxima. 



f. subsimplex Kjellm. 



Descr. et Fig. Chordaria flagelliformis f. subsimplex Kjellm. 1 c. et t. 1, fig. 16 — 18. 



Syn. Chordaria divaricata Gobi, Algenfl. Weiss. Meer. p. 69; sec. spec. 



» flagelliformis Aresch. Phyc. Scand. p. 366. 



» » J. G. Ag. Spetsb. Alg. Progr. p. 2; Bidr. p. 11; Gronl. Alg. p. 110. 



» » Croall, pi. Disc. p. 458. 



» » Dickie, Alg. Cumberl. p. 237; Alg. Sutherl. 1, p. 141; Alg. Nares p. 7. 



» » Gobi, 1. c. p. 70. 



K. Vet. Akad. Hnndl. Band. 20. N:o 5. oZ 



