A CATALOGUE OF THE BRITISH MARINE ALG.E 



101 



Isactis 

 Isthmoplea 



Laminaria 



Laurencia 



Leatbesia 



Leibleinia 



Leptonema 



Lithoderma 



Lithophyllum . . 



Lithothamnion 



Litosiphon 



Lomentaria . . 



Lyngbya 



Mastigocoleus. . 



Melobesia 



Merismopedia 



Mesogloia 



Microchaete 



Microcladia . . 



Microcoleus 



Microcoryne . . 



Mikrosyphar . . 



Monospora 



Monostroma . . 



Myriactis 



Myriocladia . . 



Myrioneraa 



Myriotrichia . . 



Naccaria 



Neevia 



Nemalion 



Nemastoma . . 



Nitophyllum . . 



Nodularia 



Nostoc 



Ocklockffite 



Odonthalia 



Oncobyrsa 



Oscillatoria 



Ostreobium 



Padina 



ERRATA. 



P. 25, line 17 trom top, for "Phaeospora," read " phlceospora." 



P. 72, line 6 from top, for " Flor. Ital. p. 55," read " Florid. Ital. ii. p. 55." 



