KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 20. N:o 5. 105 
Melobesia macrocarpa Rosan. 
Melob. p. 74. 
Descr. Melobesia macrocarpa Rosan, 1. ¢. 
Fig. » » » » +. 4, fig. 2—8 et 11—20. 
Syn. Nelobesia macrocarpa Kigen, Nordl. Alg. p. 11. 
Habitat. It has been found in the Polar Sea growing on Laminariu digitata within 
the upper part of the sublitoral zone. Here it has ripe sporangia in July and August. 
Geogr. Distrib. It is known only from the Atlantic region of the Polar Sea, on 
the coast of Norway. 
Locality: The Norwegian Polar Sea: Nordlanden. 
Melobesia Lejolisii Rosan. 
Melob. p. 62. 
Descr. Melobesia Lejolisii Rosan. 1. ec. 
Fig: » » » oF tab? i fig. 1—12., 
Syn. Melobesia spec. Kspiim. Spetsb. Thall. 1, p. 4. (?) 
Habitat. It occurs fastened to Ptilota plumosa (and P. pectinata?) and accordingly 
belongs to the sublitoral zone. I have seen specimens with conceptacles of sporangia 
from Greenland, but I have no information as to the time of the year when they were taken. 
Geogr. Distrib. It is known with certainty from the arctic region of the Polar 
Sea, and it may be supposed with pretty great certainty to occur also within the At- 
lantic region of it. Besides this, its distribution is uncertain. I have seen specimens 
from Greenland belonging surely to this species, and this may possibly be the case also 
with those sterile specimens which I found once on the north coast of Spitzbergen. 
Localities: The Greenland Sea: the northern coast of Spitzbergen (?). 
Bafjin Bay: on the west coast of Greenland. 
Fam. RHODOMELACE J. G. Aa. 
Symb. p. 23; Spec. Alg. 2, p. 787. 
Gen. Odonthalia Lynas. 
Hydr. Dan. p. 9. 
Odonthalia dentata (L.) Lynas. 
l. c. Fucus dentatus L. Mant, p. 35. 
Descr. Odonthalia dentata J. G. Ag. Spec. Ale. 2;.p. 899. 
Fig. » » Harv. Phye. Brit. t. 34. 
Exsice. » » Aresco. Alg. Scand. exsicc. N:o 56. 
K. Vet. Akad. Handl B. 20. N:o 6. 14 
