(_Pileopsis Ungarica_.)
The _Pileopsis Ungarica_ is extremely elegant both in its form and
markings; it is of a delicate white, slightly tinged, internally, with
rose-colour. The animal attaches itself to rocks, between high and low
water mark, and very rarely, if ever, changes its situation, unless
removed by accident, when it is driven about by the waves, until the
creature, being thrown on a rock in a favourable situation, attaches
itself firmly to the surface.
[Illustration: _Pileopsis Ungarica._]