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 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 L. coccinea. 



31. Lepralia coccinea, Lr. Fleming. 



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

 Nulliporapoli/morphay Isle of Man, Prof. E. Eorbes; Corn- 

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

 Andrew's, Prof. Read; Ealmouth, Dr. Cocks; dredged off 

 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. 



32. Lepralia ciliata. (Plate XYIII. fig. 66.) 



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

 This is one of the most common of our Lepralias, and 



