304 HISTORY OF BRITISH ZOOPHYTES. 
Ireland, common, W. Thompson; on seaweeds, Cornwall, 
Mr. Peach; on different kinds of alge, Devonshire, Miss 
Cutler ; on Phyllophora rubens, Isle of Man, Miss S. Beever, 
from Miss Hislop; on Laminaria saccharina, coast of Ayr- 
shire, very common, D. L. 
This, though common, is a pretty species. It appears most 
frequently, with us, in roundish patches of thin calcareous 
crusts. The cells are sub-cylindrical, and pellucid, with a 
few transverse plaits; they are often almost concealed by 
a great number of globular ovarian capsules. Lieutenant 
Thomas finds two varieties in Orkney; one with the cells 
touching, and the other with the cells separate, and the 
intermediate space punctured. We received a variety from 
Miss S. Beever, with bunchy ventricose cells, which we 
at first thought L. simplex, but the cells want the thickened 
rim. 
2, Lepratia TENUIS, 4. H. Hassall. 
Hab. On rocks and shells. On Laminaria digitata, Dub- 
lin Bay, Mr. Hassall; Cornwall, Mr. Peach; on Pecten 
opercularis, off Sana Island, Mr. Hyndman; on P. varius, 
Sidmouth, Mrs. Gatty ; on Laminaria saccharina, Lamlash 
Bay, D. L. | 
The cells are ovate and long in proportion to their 
