1 16 
imbedded. The surface is frosted or minutely punctured- 
The apertures are oval, and armed with three triangul* 
denticles, which slightly lean over the opening ; at the dista 
margin there are three or four long slender bristles, wbic 
reatiily break off; In the newer portions these bristles ar^ 
nearly always to be found, and the mouth is terminal a n 
almost hid from view by the teeth and prominent charac e 
of the surrounding parts. 
This most nearly approaches the L. coccinea in cbaracte > 
but differs so much as to show a specific difference. 
L. VARIOLOSA. Encrusting, calcareous ; cells ov»j» 
alternate, or semi-alternate, punctured or frosted ; sep' 
rated from each other by a raised line. PI. xxii., G. 
Lepralia variolosa, Johnston’s Brit. Zoopb., p. 278, pi- 
fig. 4. 
Hab. On shells and stones, not uncommon. Polperf 0 ' 
Goran, Mr. Peach. 
Encrusting; the crust is very closely adherent, circU f 
scribed, and calcareous. It is of a yellowish flesh co 1°' 
while living, which in death changes to a sallow white* 
yellowish brown, but is very frequently of a pure wlj 1 ‘ 
The cells are oval, somewhat, imbedded, long and slig‘ l j_ 
inflated ; their surfaces are minutely punctured or fro® | af 
They are separated from each other by a raised intercell' 1 ^ 
ridge, which is marked by large depressions. The apertu 
are round, but are liable to a little irregularity on ( 
proximal lip; and on the distal margin are two long sle° l 
diverging spines, which in dried specimens, are most c°' 
monly destroyed. ^ 
L. VINCA. Calcareous, encrusting; cells ovoid, nper lll ^ 9 
round, armed, with three or more spines ; the 
between the cells marked with two rows of punctures, ' .. 
bands of smaller ones embracing the cells. PI- 55 
fig. 7. 
Hab. On stones at low water mark ; 
gissey bay. Polperro. 
common. 
This species very nearly resembles the Lepralia vat to (() 
in almost every particular. Mr, Peach first pointed °" lte r 
me, what he thought to be specific differences, and 
examining a great variety of specimens, I am incliu®^ 
adopt his view. The chief differences between the two, ' s 
that this is somewhat smaller, and whiter; the P unC c0 |l9 
between the cells larger and more raised ; and the 
appear as if bound down with chains from being surrou 
by bands of minute cells. 
