Pleodont lizards, [648].

Plesiosaurus, [662], [671].

Pleurodont reptiles, [648].

Pleurotoma, [425].

Pleurotomaria flammigera, [427].

Plicatula inflata, [400].

Plieninger, M., researches of, [805].

Pliocene deposits, [24].

Pliosaurus, [673].

Plumstead, Kent, [395], [406].