228 KJELLMAN, THE ALG^ OF THE ARCTIC SEA. 



February. During the latter part of the winter the sorus is formed of paraphyses and 

 void or abnorinously developed zoosporangia. In summer I have found only sterile 

 specimens both on the coasts of Spitzbergen and on the west coast of Novaya Zemlya. 

 I have collected individuals with young zoosporangia at the end of August in the Kara 

 Sea and in the middle of September in the Siberian Sea. 



Geogr. Distrib. The present species is probably circumpolar in the Arctic Sea 

 proper. HoAvever, it is not known as yet from the American Arctic Sea. I have found 

 it in the greatest abundancy on the north-west coast of Spitzbergen. Here it attains 

 a high degree of luxuriancy. In the southern part of the Siberian Sea it is small 

 of size. The most northern point where it has been found is Musselbay on the north 

 coast of Spitzbergen Lat. 79° 53'. 



Localities: The Greenland Sea: the north and west coasts of Spitzbergen, local, 

 but rather abundant. 



The Murinan Sea: the west coast of Novaya Zemlya from Matotshin Shar to 

 Karmakulbay, local and rather scarce. 



The Kara Sea: Uddebay and Actinia Bay, at both places scarce. 



The Siberian Sea: Irkaypi and Koljutshin Isle, pretty plentiful. 



Baffin Bay: the west coast of Greenland: Jakobshavn and Rittenbenk, scarce. 



Laminaria cuneifolia J. G. Ag. 

 Lam. p. 10. 

 Descr. Laminaria cuneifolia J. G. Ag. 1. c. et Gronl. Lam. och Puc. p. 14. 

 Syn. Laminaria caperata Dickie, Alg. Nares, p. 6 (?). 



cuneifolia J. G. Ag. Gronl. Alg. p. 110. 



» Gobi, Algenfl. Weiss. Meer. p. 75 (?). 



saccharina (?) Asum. Alg. Hayes, p. 96 (?). 



» Croall, F1. Disc. p. 457 (?). Cfr. J. G. Ag. Gronl. Lam. och Fuc. p. 14. 



» Dickie, Alg. Sutherl. 1, p. 140.(?) Alg. Cumberl. p. 237.1'?) Cfr. J. G. Ag. 1. c. 



Remark on the species. In the eastern part of the Siberian Sea I found a Lami- 

 naria abundant which I think belongs to L. cuneifolia J. G. Ag. In the shape, colour, 

 consistency, and anatomical structure of the lamina and in the shape and position of 

 the sorus it accords with specimens from Greenland determined by J. G. Agakdh. It 

 differs from them, it seems, by smaller size and somewhat longer stipe. The length 

 of the stipe varies between 4 and 15 cm., in most cases not exceedinor 10 cm. In 

 almost all the Siberian specimens that I succeeded in collecting, the lamina was in 

 course of being exchanged, so that I am not clear as to what size it attains in the 

 Siberian Sea. Judging from remaining fragments of the old lanjina and those few 

 specimens with developed lamina that I have seen, it does not become so large here 

 as on the coasts of Greenland. When the new lamina has made some progress in 

 growth, the plant with regard to this part bears a delusive resemblance to L. solidun- 

 gula. From other species of Laminaria the present species appears to be well diffe- 

 rentiated. It is distinguished from the common arctic L. Agardhii by possessing lacunae 



