140 KJELLMAN, THE ALG OF THE ARCTIC SEA, 
is in the southern part of the Norwegian Polar Sea. The most northern place where 
it has been met with is the north-west coast of Spitzbergen about Lat. N. 79° 45’. 
Localities: The Norwegian Polar Sea: Nordlanden, common and abundant; Fin- 
marken at Maasé, Gjesver, and Talvik, rather local and scanty. 
The Greenland Sea: the west coast of Spitzbergen, local and scarce. 
The White Sea, rare (?). 
The Murman Sea, local and scarce. 
Fam. SQUAMARIACE (Zanarp.) Hauck. 
Meeresalg. p. 13; ZANARD. Synops. p. 133, sec; J. G. Ac. Spec. Alg. 2, p. 485; lim. mut. 
Gen. Peyssonnelia Dcsne. 
Pl, Arab. p. 168; sClass; jp. 114° 
Peyssonnelia Dubyi Crovan. 
Ann. d. Se. p. 368. 
Descr. Peyssonnelia Dubyi J. G. AG. p. 384. 
Fig. » » Hany. Phye: Brit. t. 1. 
Syn. Peyssonnelia Dubyi Dickie, Alg. Sutherl. 1, p. 142. 
» » Kuen, Nordl. Alg. p. 15. 
Habitat. It has been found in very deep water off the arctic coast of Norway. 
Here it is sterile during the latter part of the summer. On the coast of Bohuslan it 
develops reproductive organs in great numbers in winter. In Baffin Bay it has been 
taken, according to Dickm, in 12—15 fathoms water, attached to stones. 
Geogr. Distrib This alga is known from the southern part of the Norwegian 
Polar Sea and from Baffin Bay. Its most northern locality is Cape Adair on the east 
coast of Baffin Land about Lat. N. 71°. ; 
Localities: The Norwegian Polar Sea: Nordlanden, scattered and rather scarce. 
Baffin Bay: Cape Adair. 
Gen. Petrocelis J. G. Aa. 
Spec. Alg. 2, p. 489. 
Petrocelis Middendorffi (Rurr.) nob. 
Cruoria Middendorffi Rupr. Alg. Och. p. 329. 
Descr, Cruoria Middendorffi Rurr. 1. ¢. sub Cruoria peilita. 
Fig. » pellita » » +t. 18, fig. a—b. 
Remark on the species. On the coast of Finmarken I have found a species of 
Petrocelis, agreeing very well with that from the Ochotsh Sea described and figured 
