communicated by Dr. Johnston, who gathered them near
Berwick. It appears confined to the more northern parts
of Europe, and, though specifically distinct, is nearly allied
to Zonaria squamaria of the Mediterranean. The structure
is quite different from that of true Padince, and there can
be no doubt that it belongs to a distinct genus, as indicated
by Dr. Greville in Algce Britannicce. The fructification
figured appears to be precisely like that found by Mr.
Turner on Ulva squamaria. Candour obliges us to point
out the very great resemblance which it bears to Myrio-
nema strangulans. Similar fructification is figured by Suhr
in ‘ FloraJ 1834, Part 2. t. 1, on Zonaria interrupta Ag.
The genus will, however, be well characterised by the
structure of the frond resembling that of a Thelephora, even
if the fructification should be judged doubtful : I have,
therefore, had no hesitation in dedicating it to my friend,
Mr. J . Ralfs, of Penzance, a very zealous and able Algolo-
gist.—M. J . B.
