131 
Ij'om Sark, so that, though rare it will probably be found 
throughout the English channel. 
ESCHARA. Ray. 
Generic Character: Polypidom inembrano-calcareons ; in- 
flexible, brittle, expanding in the form of foliaceous porous 
lamellae, variously folded and anastomosing, and consisting 
of two layers of opposite cells: cells immersed, eoalesent, 
horizontal to the plane of axis; opening on both surfaces 
in quincuncial pores protected with an operculum. Poly- 
pes ascidian. 
STONY FOLIACEOUS CORALLINE. E. Foliacea. 
Membrano-calcareons, in thin waved plates like the bor- 
ders of a lady’s cap; plates frequently uniting; cells on 
both sides of the folds. 
Stony Foliaceous Coralline, Ellis’ Coral., p. 71, no. 3, 
Ph 30, fig. a A B C. Borlase, p. 239, pi. 24, fig. 6. Esehara 
fetiformis, Raii, Synop., vol. 1, p. 31. Fleming’s Brit. An., 
P' 531. Millepora foliacea, Ellis and Solander’s Zooph,, 
P- 133. Turton’s Lin., vol. 4, p. 636. Millepora fascialis, 
"tewart’s Elem., vol. 2, p. 427. Esehara foliacea, John- 
son’s Brit. Zooph., p. 297, pi. 40. 
Uab. About two miles N. N. W. of the Eddy stone, very 
c °nunon. Off the Deadman point occasionally ; mid-channel, 
Co *nmon. Falmouth bay, Miss Vigurs. 
^ This is the largest of all the Cornish, and probably of the 
^ r, tish corals. Dr. Johnston says it “attains a large size 
*ing often three or four inches high and from twelve to 
v enty jn jt s greatest diameter.” But this, even, is small 
°uipared with many specimens procured on the Cornish 
the largest I ever saw' was hooked up by a fisherman 
j the Eddystone in the Autumn of 1843, it measured seven 
. l L 't four inches in circumference, and a foot and three quar- 
j® rs in depth. It is, however, most commonly found in a much 
tjtnbler form. When li virig it is of a delicate flesh colour 
C '.'ell turns to a light brown in death. It is a very thin and 
v 'aceons species, resembling a sheet of paper waved into 
c ari ou s folds. The plaits or folds frequently unite and form 
^nous passages through the mass. The cells are small, 
. t* arranged on both surfaces of the sheet; on the older 
'lions they are recognized by the small round apertures 
"‘“cuncially arranged: the surfaces being made even by 
^ °areous deposit. When living it is slightly elastic, but 
t Q en dead it is exceedingly brittle; breaking on the least 
ai) c j'- Beside this foliaceous or plaited form, there is 
f t,'s ler ’ not no t' ce d by authors ; an encrusting form which 
entbles the Flustra bullata of Linnmus. This is found 
