Page:The common shells of the sea-shore (IA commonshellsofse00wood 0).pdf/35

Rh vourer of Gaper-shells, and the walrus is also able to obtain them. Even birds know the value of the Gaper-shell, and many of the larger species can disinter the molluscs with their beak, as easily as the foxes with their paws.

There is a curious structure in the hinge of this species which is worthy of notice. At the upper part of the accompanying illustration is seen part of a