LEPRALIA. ava 
30, Lepratia Bait. 
Hab. On bivalve shells, island of Sana, Mr. Hyndman ; 
coast of Cornwall, Mr. Peach. 
This is dedicated to Robert Ball, Esq., of Dublin, an 
eminent naturalist. The cells are short and raised, thick, 
and rough with granules; the aperture wide, with a mucro 
above the upper lip, and with two ear-like open loops at the 
side. Capsules in front, rounded, granulous. It is now 
thought to be a variety of LZ. coccinea. 
31. Lepratia coccrngea, Dr. Meming. 
Hab. On the under side of stones, Dr. Fleming; ou 
Nullipora polymorpha, Isle of Man, Prof. E. Forbes; Corn- 
wall, Mr. Peach; Isle of Wight, Mr. Thompson; near St. 
Andrew’s, Prof. Read; Falmouth, Dr. Cocks; dredged otf 
the Tees, Lieut. Thomas, R.N.; on roots of Laminaria 
digitata, Saltcoats, D. L. 
“ Cells sub-cylindrical, adjacent, in divergingly bifid 
rows; mouth wide, a single blunt tooth on the outer mar- 
gin, and two or three spines on the inner.” It is pretty 
common on the coast of Ayrshire. 
O2. Lepratia ciuiata. (Plate XVIII. fig. 66.) 
Hab. Parasitical on seaweeds, rocks, and shells ; common. 
This is one of the most common of our Lepralias, and 
