NEW OR CRITICAL BRITISH ALG2E. 
21 
Ascocyclus globosus, Rice. Algenjl. p. 46* Atlas t. 17. 
On Cladophorce, etc. Cumbrse. 
A rather larger plant than any of the preceding, forming 
almost globular patches on Cladophorae, etc. The assimilation 
threads are branched, and the plurilocular sporangia are formed by 
the transformation of the cells of the branches. It is not clear to 
me in what way this plant differs from Kjellman’s Phceosphcerium 
punctiforme (Handbok Hafsalg, p. 41), a species founded on the 
old Linhia punctiformis , which in my opinion is an Ascocyclus (A. 
punctiformis ). 
Ralfsia pusilla, Batt. Journ. of Botany, 1892. 
When examining some specimens of As. f mundus on the fronds 
of Laminaria saccharina from Karnes Bay, Cumbr^e, I found what 
appears to be Stroemfelt’s Stragularia pusilla (Notar isia, An. iii., 
fasc. 9). It formed very minute spots hardly larger than those of the 
Ascocyclus, but the frond, consisting of several layers of cells, was 
that of a Ralfsia ; it is possible the plant may belong to Reinke’s 
genus Microsponum. 
Chorda tomentosa, Lyngb. f. subfulva , Foslie. Contrib. Mar. Alg. 
Norway, i., p. 87. 
Cumbrae (David Rob ertson). 
When at Cumbrae last year Mr. Robertson presented me with 
some specimens of Ch. tomentosa , Lyngb., which he had gathered 
in Karnes Bay some years previously. These specimens appear to 
me undoubtedly to belong to Foslie’s variety subfulva. The 
variety is smaller than the typical form (my specimens are from 
three inches to a foot long), the hairs clothing the frond are softer, 
and on drying change to a beautiful green colour instead of a dark 
brown. The sporangia and paraphyses are very much alike in both 
forms. 
Fucus Areschougii, Kjellm. Handhole Hafsalg. p. 11. 
England. 
Kjellmans founded this species partially on the Fucus Sherardi of 
Aresch., but whether this plant is identical with the F. Sherardi 
of Stackhouse’s “ Nereis Britannica ” I am unable to say. Judging 
from specimen No. 54 of Areschoug’s Algse Scandinavica, which is 
quoted by Kjellman as his F. Areschougii , the plant, is not un- 
like F. platycarpus, but is smaller, with narrower fronds, and 
roundish receptacles destitute of the margin of unchanged frond 
which characterize that species. The plant is probably common 
on our shores. 
Erythrotrichia carnea,/. Ag.,f. investiens == var. b.' aI‘6\icJ)I llhlc,. I nA 
Scand. Mar. p. 210. ~ 
Lamlash Bay, Arran. 
In this variety the fronds are swollen and irregularly bent at 
intervals, owing to one of the articulations being ciomposed of m 
than a single cell. 
