68 



bottom and somewhat sheltered places, especially appearing in sounds 

 and fjords. Some specimens bearing conceptacles of sporangia 

 and in part apparently ripe sporangia have been taken in June 

 and July, and a couple of others with cystocarpic conceptacles in 

 June. 



Occurrence. Its most northerly and certainly known locality 

 is Skorpen in Kvaenangen, scarce (f. norvegica and f. saxatilis); 

 Lodingen in Nordland; Hero in Helgeland (Schreiner); Frojen, 

 scarce (f. norvegica) ; Storfosen near Bej an, scattered and apparently 

 scarce (f. norvegica, f. saxatilis, f. australis); at different places in 

 the Trondhjem Fjord, as Inderoen, Tautra, Holmberget, Rotvold, 

 Byberget, Roberg, Skjorn and Bej an, mostly local and sometimes 

 scarce sometimes abundant (f. norvegica, f. saxatilis); Sulen in 

 Sognefjord (Bo ye); Haugesund (Wittrock) local but abundant 

 (f. norvegica, f. australis); Mandal (Wille); and Nesodden in the 

 Christiania Fjord (Schreiner). 



Geogr. Distribution. Britain (Batters); France (Crouan, 

 Bo met). 



Lithothamnion divergens Fosl. mscr. 



L. fronde libera in fundo jacente, roseo-flavescente, irregula- 

 riter ramosa; ramis e centro solido, exiguo, vel axi primario egre- 

 dientibus, omnino liberis vel inferne plus minus coalitis, divergen- 

 tibus, flexuosis, teretibus, subagqualibus vel apicem versus attenuatis, 

 1.8—2.2 mm. crassis, apicibus rotundatis; conceptaculis sporangiferis 

 convexiusculis, a superficie visis diametro 300 — 350 {*■; sporangiis 

 quaternas(?) sporas foventibus, circa 120 jj. longis, 40 /a crassis. 

 Tab. 16, fig. 43—50. 



Syn. Lithothamnion norvegicum f. distans Fosl. Contrib. II, p. 7; ex parte. 



Description of the species. The more or less irregular frond 

 is in its longest diameter frequently about 2.5—4.5 cm. long. It 

 always develops itself freely on the bottom. The colour is in 

 dried specimens yellowish, or yellowish pink, towards the tip of 

 the branches often somewhat darker, with a violaceous tinge. The 

 solid central mass is insignificant, or forming a somewhat elongated 



