Plants, tendrils of, [107].

Plates of baleen, [40].

Platypus, [175].

Pleiades, [193].

Plesiosaurus, [106], [133], [178].

Pleurodont dentition, [148].

Pleuronectidæ, [37], [166].

Plotosus, [147].

Poisoning apparatus, [66].

Poisonous serpents, [50].