118 
L. CIL1ATA. Encrusting; cells inflated, slightly roughs 
apertures round, contracted, armed with about six bristle* 
on the distal and lateral margins. PI. xxii., fig. 10. 
Berenicea utriculata, Fleming’s Brit. An., p. 533. R e ' 
pralia ciliata, Johnston’s Brit. Zooph., p. 279, pi. 34, fig. 
Hab. On stones and shells, from near low water mark to 
deep water. Whitsand bay, Polperro, Goran, &c. 
This species is membrano-calcareous, encrusting, tbin» 
white, and spreading in a circular manner from about one inch 
to one and half inch in diameter. The cells are distant, or not 
in contact, ovato-globose and semi-erect. The apertures ar® 
terminal, contracted and armed with from five to seven teeth 
or spines on the distal and lateral margins. These spine* 
from their brittleness, are commonly distroyed in preserved 
specimens, and most have but their mutilated remains. 
L. TRISPINOSA. Encrusting; cells oval, closely * r ' 
ranged; surface roughish; apertures terminal, armed with 
three long conoidal spines on the distal margins. 
Lepralia Trispinosa, Johnston’s Brit. Zooph., p. 280/ 
pi. 34, fig. 5. 
Hab. On stones and shells from deep water, rare- 
Polperro. 
Encrusting, thin membrano-calcareous, and white b°| 
freckled with yellow'. The cells are elongated and oval, 
horizontal and radiating. The apertures are raised, ovoi l, » 
with a notch on the proximal, and armed with three 1°°^ 
conical spines on the distal lip. 
L. IMMERSA. Encrusting ; cells oval, immersed ; a P er * 
tures oval, with a tooth on the proximal and from five 1 
seven spines on the distal lip. 
Berenicea immersa, Fleming’s Brit. An., p. 533. h. ,IJl 
mersa, Johnston’s Brit. Zooph., p. 280. PI. xxxiv., fig. 8' 
Hab. On stones a few miles from the shore. Polperro* 
This is encrusting, irregular, and much thicker then 
ciliata, which it somewhat resembles. It is rough, 
minutely granular, and of a yellowish amber colour. 
cells are ovato-globose, and immersed; the apertures 
nearly circular, hut slightly transversely ovoid, armed wl 
a blunt tooth on the proximal and several spines on 
distal lip. The spines arc brittle and consequently are * 
queutly destroyed or injured. 
MEMBRANIPORA. g . 
Generic Character : Polypidom encrusting, niembr 3 ® 
calcareous, spreading irregularly, formed of a siDgle W 
