lying among other Algae on the sand in Granville Bay; they had
a saucer-like shape, which they have lost in pressing.” They
consist merely of the secondary fronds, accidentally tom from the
firmly attached primaries, which may possibly be reached by
dredging on the coast. I have compared them with specimens
of the Mediterranean plant received from J. Agardh, and the
agreement is very perfect. There can, therefore, be no doubt of
the indentity of the species.
Never having seen the primary frond, I give the specific character
and description nearly in the words of Agardh; and our
upper figure (fig. 1) is an attempted restoration of the flattened
specimen, more faithfully represented at fig. 2.
Fig. 1. Zonaria collaris :— the natural size. 3. One of the fronds of the
same opened o u t:— the natural size. 3. Apex of frond, with its fringe. 4.
Filaments from the fringe:— both magnified.
