Barbados Keyhole Limpet is 3-5 cm in length. Solid, conical,
and highly elevated, with round or oval orifice at top. The surface is
rough, with a heavy assortment of radiating ribs that project at the margins
and give the shell a scalloped edge. Variable in colour and generally some
shade of green, gray, or pink with brown blotches. The interior usually
has alternating rings of dull green and white. Occurs in intertidal regions,
on rocks near low tide level.