PLATE XVir. 

 [Proc. Wash. Acad. Sci., Vol. Ill, PI. L.] 



Fig. I. Laminaria caneifolia "] . h.^. 



2. Mesogloia simplex sp. nov. 



3. " " section (X lOO). 



4. " " (X400)- 



[462] (226) 



