34 M. FOSLIE. [1903 



been made in Ellesmereland and N. Kent during the Fram-Expedition 

 led by Mr. Sverdrup 1898 — 1902, namely in the following places: 

 Odedalerne in the Havnefjord in a river-bed in gravel mixed with 

 clay, together with large numbers of mussels, e. g. My a truncata, 

 Saxicava rugosa, Astarte elliptica, etc., about 5 meter above 

 the level of the sea (Simmons!); the Neve Bay (Nevebugten) 

 in a river-bed together with mussels (Simmons!); the Reindeer 

 Bay (Renbugten) in a river-bed (Is a ch sen!); N.Kent, bay on the 

 south-side in a layer of clay about 3 meter above the level of the sea 

 together with Mya, Saxicava, Balanus, Serpula, etc. (Simmons!). 



7. Lithothamnion colliculosum Fosl. 1 ) 



Gontrib. II (1891), p. 8, partim, Norw. Lithoth. (1895, p. 75, partim, Rev. 

 Syst. Surv. Melob. (1900), p. 11. 



f. iypica. 



Frond at first saxicolous, crustlike, with wart-like excrescences 

 which arise into erect, subcylindrical, short branches 2—3,5 mm. 

 in diameter, either simple or bifid, often with wartlike processes and 

 frequently crowded; afterwards the crust sometimes disappears (being 

 attacked by animals) and the branches become more elongated,, 

 repeatedly subdichotomously divided, subcylindrical or subcom- 

 pressed, with rounded ends, the frond finally lying loose at the 

 bottom, almost inverted plate-shaped and up to about 12 cm. in 



!) On the urgency of Dr. F. Borgesen to give him a list of the boreal- 

 arctic Lithothamnia and their distribution, I submitted them to a revision 

 somewhat hurried, and I was not able to go through the whole material 

 thoroughly. I am sorry to state that in consequence the number and the 

 limitation of the species in the pamphlet present are to some extent dis- 

 agreeing with the survey I sent to Dr. Borgesen last spring. Cp. 

 Jonsson and Borgesen. The Distribution of the Marine Algae of 

 the arctic Sea and of the northermost part of the Atlantic. — Botany of 

 the Faeroes. Appendix (Copenhagen 1905). The number of Norwegian spe- 

 cies has now become larger. Besides a few new species, indeed some 

 forms of species of the said list have been here admitted as species inde- 

 pendent, viz. L. colliculosum, L. intermedium, L. breviaxe, L. soriferum, 

 L. nodulosum and L. Granii. I much regret the alteration, which, however, 

 will hardly disturb, in a degree worth mentioning, the understanding of the 

 survey of the geographical distribution of the algae given by Messrs. 

 Jonsson and Borgesen. 



