On some New British Marine Algae. 
BY 
E. A. L. BATTERS, B.A., LL.B., F.L.S. 
With Plate XI. 
URING the last few months a large number of species 
i->^have been added to the Marine Flora of Britain, and 
I propose in the present paper to give descriptions of such of 
them as have either never been previously described or have 
only been described in my preliminary note on a previous 
page of this volume h 
Buli'hamia speciosa, Batt. l.c. 
I found this species, which I have named after Mr. T. H. 
Buffham who has done so much to increase our knowledge of 
the reproductive organs of the Florideae, at Weymouth in 
1892. In September of that year I gathered a considerable 
quantity of Castagnea Griffithsiana , J. A g., in the hope of 
finding plurilocular sporangia, which up to the present time 
have not been found on that species, the systematic position 
of which must in consequence remain doubtful. Although 
I did not succeed in finding the gametangia of the Castagnea , 
my labour was not thrown away, as most of the specimens 
I then gathered were more or less covered with epiphytic 
1 Annals of Botany, Vol. ix, p. 168, 1895. 
[Annals of Botany, Vol. IX. No. XXXIV. June, 1895.] 
