Illustrated Index of British Shells / Containing figures of all the recent species

by G. B. Sowerby

Pholadidea, [I.] 12.

Physa, [XXI.] 12, 13.

Pileopsis, [X.] 28.

Pilidium, [X.] 24.

Pinna, [VIII.] 16.

Pisidium, [VI.] 21-28.

Planorbis, [XXI.] 18-28.

Pleurobranchus, [XX.] 29.

Pleurotoma, Mangelia.

Poromya, [II.] 1, 1*, [IX.]