358 HISTORY OF BRITISH ZOOPHYTES. 
**Harth has not a plain 
So boundless or so beautiful as thine ; 
The eagle’s vision cannot take it in; 
The lightning’s glance, too weak to sweep its space, 
Sinks half-way o’er it like a wearied bird: 
It is the mirror of the stars, where all 
Their hosts within the concave firmament, 
Gay marching to the music of the spheres, 
Can see themselves at once.” — Campbell. 
Genus XVII. ESCHARA, fay. 
Gen. Char. Polypidom membrano-calcareous, inflexible, brittle, 
expanding in the form of foliaceous porous lamelle, variously 
folded, and anastomosing, and consisting of two layers of oppo- 
site cells: cells immersed, coalescent, horizontal to the plane of 
the axis, opening on both surfaces in quincuncial pores, protected 
with an operculum.—Johuston. 
1. Escuara rotiacza, Stony Foliaceous Coralline, 
Dillenius. 
Hab. In deep water. Sussex, Dillenius; Isle of Wight, 
Ellis; Cornwall, Borlase and Couch; Devonshire, Dr. Cold- 
stream. When in Devonshire I received specimens of it 
from Mrs. Gulson, Exmouth, and Miss Cutler, Budleigh 
Salterton. 
