Pvn H,i I'UitlS

236 LUCINID^.
rare. Montagu obtained a single valve from dredged
sand at Falmouth; Turton records it from the Land's
End and Teignmouth, although the only specimen in
his collection appears to be from the first of those locali-
ties; and I fortunately obtained in 1839 two valves
(right and left, but not a pair) by dredging in muddy
off St. Mawe's
sand, at a depth of about 15 fathoms,
Creek near Falmouth, some miles outside the harbour,
and where no ballast had ever been deposited. Mytilus
Adriaticus occurred on the same ground ; and a living
specimen of Tellina balaustina has since been got there
by trawling. Another locality is, according
to Dr.
Leach (on the authority of Dr. Knox), " southern seas
of Scotland, between Arran and Bute and the Mull of
Cantire f* but the length and height of a specimen said
to have come from that quarter are suspicious, "one
inch and threequarters." It must have been the common
West-Indian shell generally known as the Lucina
divaricata of Lamarck and L. quadripartita of D'Or-
bigny. Searles Wood has described the present species
from the Mammalian and Red Crag. Collard des
Cherres states that it has been found alive at Quelern
in Brittany ;
and it unquestionably inhabits all the seas
of Southern Europe, as well as the coasts of Madeira
and the Canaries. Dr. Gould included it in his list ;
but Stimpson considers the Massachusetts shell to be a
distinct species, and has called it Lucina strigilla.
This is the Lucina digitaria of Poli, Cardium discors
of Montagu,
Lucina undularia of Searles Wood's Cata-
logue, and L. commutata of Philippi.
A valve of a much smaller species, which is fre-
quently seen in parcels of West-Indian shells, was sent
between forty and fifty years ago by Mr. Dillwyn to
Col. Montagu for his opinion. It was marked " foreign,"