Pvn H,i I'UitlS

192 kelliid^:.
Clark does not mention any.
Nor do we know what it
to Mittre it lives on the roots and
feeds on. According
leaves of fuci; but at Herm these sea- weeds are not
found in the spots frequented by the Galeomma. He
observes that they look like beautiful pearls, when seen
beneath the water at a depth of from three to four
fathoms. Mr. Dennis remarks,
in a note with which he
has kindly favoured me, " How surprisingly tough the
animal of Galeomma Turtoni is— quite like a limpet !
They occurred at Herm in little colonies, invariably
where a large loose piece of granite rested against the
solid rock, and never under stones which lay flat." The
shell resembles that of Lima in its composition and
structure. Mr. Norman's cabinet contains a specimen
having a longitudinal fold in the middle of the front
margin, and resembling in that respect a monstrosity of
Pisidium fontinale, which I noticed in page 26 of the first
volume of the present work.
This species is the Hiatella Poliana of Costa, H. striata
of Delle Chiaje, and Parthenope formosa of Scacchi.
Nardo states that it is the Tellina aperta of Renier.
Family VIII. KELLI'IME, {Kelliadce) Forbes
and Hanley.
Body oval or suborbicular, gelatinous : mantle open in front,
as well as in most genera on the posterior side to form an ex-
cretal tube it has ; only a single lobe, the margin
fringed with cirri :
gills 2 on each side : foot long
sile :
of which is
and exten-
byssus slight.
Shell triangular, oval, oblong or subglobose, equivalve,
more or less inequilateral, thin, variously sculptured, com-
pletely closed : epidermis slight : beaks calyciform :
cartilage
internal:
with both.
hinge furnished with cardinal or lateral teeth, or