Pvn H,i I'UitlS

60 PECTINID.E.
hinge and preventing its being too closely pressed
scars distinct. L. 2*35. B. 2-5.
: muscular
Tar. 1. lineata. Shell white, with a brown line running
down the crest of each rib. P. liaeatus, Da Costa, Brit. Conch,
p. 147, pi.
x. f. 8.
Yar. 2. tumida. Shell more swollen and deeper.
Yar. 3. elongata. Shell smaller, and longer than broad.
Habitat : Common on all sandy coasts, and gregarious,
in 6-90 fathoms. Yar. 1. Not nnfrequently found
with specimens of the usual colour, and sometimes having
a mixed hue. Var. 2. Plymouth (J. G. J.) ; Exmouth
(Clark); Cork (Humphreys). Var. 3. Loch Torridon,
Ross-shire (J. G. J.); BirterbuyBay, co. Galway (Barlee) :
rare. This species is a common fossil in the Scotch
glacial deposits, and in the Norwich, Red, and Coralline
Crag. Steenstrup informs me that he has found it in
Iceland; Mohr has recorded it from the Faroe Isles,
Weinkauff from Algeria, Forbes from the iEgean, and
M c Andrew from Madeira; and it is widely distributed
throughout the intervening seas.
This pretty and well-known species was first described
by Lister. Mr. Norman says that quantities are dredged
in the Firth of Clyde, where they are called " clams,"
for bait in the long-line fishery. When cooked they
have a rich and agreeable, but peculiar, flavour : they
are not much eaten in this country. According to
Montagu they are called " frills " or " queens " on the
South Devon coast. The fishermen on the Dorset coast
call them " squinns." In the north of France this kind
bears the name of " vanneau " or " 1"
olivette.
The
shells make pretty pincushion- cases; and in the North-
American States another species (P. concentricus) is
used for the same purpose.