326 HISTORY OF BRITISH ZOOPHYTES. 
38. Lupratia Gatrym, Bush. (Plate XVIII. fig. 71.) 
Hab. Discovered by Mrs. Gatty, of Hcclesfield, on Phy/- 
lophora rubens, from Sidmouth and Jersey. 
The following description is from the pen of Mrs. Gatty. 
«A delicate and beautiful Leprala, of transparent tex- 
ture, found hitherto only on Phyllophora rubens; and 
being usually surrounded by patches of other varieties of 
its race of larger size, it is very apt to be overlooked. Its 
very minute size is, however, an almost sure guide by which 
to find it; and when once seen through a tolerably good 
lens, it can never be mistaken for any of its relatives. The 
commonest observer, who can see it at all, will see that the 
centre of each cell is ornamented with a rich pattern, whereas 
other Lepralia are either dotted all over the cell, or round 
the sides, leaving the centre plain, or across the cell in 
lines. The pattern of J. Gattye, therefore, thrown as it is 
on the middle of the cell, is a very characteristic feature. 
There are two other characters which separate it entirely 
from other species; but these require a stronger glass to 
detect them. At the foot of each of the five spines that 
surround the mouth or aperture, there is a black ring. (See 
the Plate.) [This is supposed by Mr. Busk to be a flexible 
joint, similar to that of Crisia denticulata.| And below 
