362 TT A. Setchell — Classification and Geographica 



15 species and Japan has 13, but they have only 1 species in com- 

 mon. Ochotsk has 7 species in common with Alaska while Japan 

 has but 3, Ochotsk has . 5 species in common with the northern 

 Atlantic, and Arctic, and Japan has 3. Ochotsk has no Ecklonieae 

 while Alaska has, and Japan has neither Macrocyste?e nor Lessonieae 

 while Ochotsk has both. Ochotsk is to be compared with the 

 southern Pacific on account of the possession of Macrocystis and a 

 species of Lessonia peculiar to it, while Japan is to be compared 

 with the southern Pacific on account of its possession of 3 species 

 of EcMonia, none of which, however, are found anywhere else. 



The relations between the algae of the Sea of Ochotsk and 

 Behring Sea are discussed by Kjellman in the Botanisches Central- 

 blatt,^ where he expresses the opinion that the Sea of Ochotsk is 

 only a more southern part of the same province with the Behring 

 Sea.' 



We find therefore that, in the most northern part of the Pacific 

 Ocean, we have a kelp-flora which is partly Asiatic, partly Ameri- 

 can, while the more southern districts, both on the Asiatic, and on 

 the American sides have marked peculiarities which separate them 

 both from one another and from the more northern part. We find 

 also that this northern part of the northern Pacific has a consider- 

 able similarity to the northern Atlantic and Arctic in regard to its 

 kelp-flora, while it possesses two genera and one species in common 

 with the southern Pacific. 



The Southern Pacific Districts of the most prominence are three, 

 A^iz: those of Fuegia, of Australia, and of the Cape of Good Hope. 

 Their characteristics are, briefly, as follows : Fuegia is the j^lace 

 where the Macrocystis forms are most abundant; is also the only 

 place where the species of Lessonia are found in any considerable 

 abundance and luxuriance; but the species of Ecklonia are either 

 very scanty or are entirely wanting. Australia abounds in forms of 

 Ecklonia, Macrocystis is also fairly abundant there, but Lessonia 

 species are entirely wanting. The Cape of Good Hope is the home 

 of the largest species of Ecklonia (M huccinalis (L.), Hornem.) and 

 possesses also the Australian species Macrocystis is abundant, par- 

 ticularly at the Agulhas Bank,^ but less abundant than at Cape 

 Horn or on the coasts of Australia.* The Cape of Good Hope how- 



1 Bd. xli, pp. 168-170 and 198-199, 1890. 



'^ Loc. cit, p. 199. 



3 Cf. Hooker, Antarctic Flora, Ft. 2. p. 465. 



^ Cf. Martens, Die Freussische Expeditonen nach Ost-Asien. Die Tange, p. 40, 1366 



