42 ON ALG.E COLLECTED AT MARION ISLAND 



CERAMIACEiE. 



Ceramium CAPENSE, Ktz. 

 Geogr. distr. Cape G. Hope. 



Centroceras clavulatum, Jjf. 



Geogr. distr. In the warmer seas of both hemispheres 



SlPHONACE^E. 



Bryopsis c^espitosa, Suhr. 

 Geogr. distr. Coast of S. Africa 



Ulvace/e 



Porphyra laciniata, Ag. 



Geog. dist. Widely spread in both hemispheres. 



XXIII. Algae collected by Mr. Moselet at Marion Island, in 



40 fathoms. By George Dice;ie, M.D., F.L.S. 



[Eead February 4, 1875.] 



This is the most southern of the group called Prince Edward's 

 Islands, and about 1100 miles south of Cape G-. Hope, lat. 45° S., 



long. 40° W. 



Sporochnace^:. 



Desmarestia viridis, Lam. 



Geog. dist. Widely distributed iu the temperate and colder seas of both 

 hemispheres. 



LaMINARTACEJE. 



■ 



Macrocystis pyrifera, Ag. 



Geogr. distr. Cape G. Hope ; Indian Ocean ; California. 



KlIODOMELACEiE. 



Dasya Berkleyi, Mont. 



Geog. distr. Auklands ; Falklands ; Cape Horn ; Coast of Chiloe ; 



Kerguelen. 



LaVRENCIACEJE. 



Cladhymenia pellucida, n. sp.? * 



Fronde lineari, tenui, membranacea, pluries pinnata, costa pellucida api- 



