BRITISH ZOOPHYTES. 251 



The zoa3cia iu tliis species somewliat resemble tliose 

 of the preceding, but they have a row of small tuber- 

 cles just inside the margin, a tubercle terminating each 

 of the ci'oss ribs. The cells are barrel-shaped. 



5. C. GATTYJ5, Biish Plate XX. fig. 5. 



Lepralia Gattyi© {BusJc, D. L.), Lepralia Steindach- 

 neri {Heller). 



Hab. : Sidmouth {Mrs. Gatty), Gruernsey {T. E.), 

 Hastings {Miss Jelly) . 



In Dr. LandsborougVs '' Popular History of British 

 Zoophytes " is the following description by its dis- 

 coverer, Mrs. Gatty : — " The centre of each cell is 

 ornamented with a rich pattern, and this is a very 

 characteristic feature. At the foot of each of the five 

 spines that surround the mouth or aperture is a black 

 ring, and below the mouth there is on each side a 

 single fine spine, which may be compared, perhaps, to 

 a qat^s whisker (a vibraculum). In the middle of all 

 there is a knob or projection (more or less obvious in 

 different individuals), and round this " umbo-like " 

 projection there is a circle of small dots or punctures. 

 From this circle emanate rays or raised lines, between 

 each of which there is to be found a dot or puncture, 

 larger in size than those of the other circle. These 

 rays and stars are alternate, and so form a circle outside 

 the circle that surrounds the umbo." 



Genus II. Membraniporella, 8mitt. 



Zoarium incrusting, or rising into free, foliaceous 

 expansions, with a single layer of cells. Zooecia closed 

 in front by a number of flattened calcareous ribs more 

 or less consolidated. — T. H. 



1. M. NiTiDA, Johnston. Plate XX. fig. 6. 



