LEPRALIA. 323 



30. LEPRALIA BALLII. 



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 niucro 

 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 L. coccinea. 



31. LEPRALIA COCCINEA, Dr. Fleming. 



Hab. On the under side of stones, Dr. Fleming; on 

 Nullipora polymorpha, Isle of Man, Prof. E. Forbes; Corn- 

 wall, Mr. Peach ; Isle of Wight, Mr. Thompson ; near St. 

 Andrew's, Prof. Bead; Falmouth, Dr. Cocks; dredged off 

 the Tees, Lieut. Thomas, E.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. 



32. LEPRALIA CILIATA. (Plate XYII1. fig. 66.) 



Hab. Parasitical on seaweeds, rocks, and shells ; common. 

 This is one of the most common of our Lepr alias, and 



