noticed this plant is Kiitzing, who describes what he regards as 
the same from the shores of the Adriatic, but it would be satis- 
factory to have specimens from each locality compared together 
before deciding on their identity. 
Fig. 1. Tufts of CALOTHRIX CHSPITULA, growing on a piece of rock:—the natu- 
ral size. 2. Portion of the tuft. 3. Part of the same, more separated :—both 
magnified, 4. Filaments :—more highly magnified. 
