Pipra deliciosa.
Pirates stridulus, stridulation of.
Pitcairn island, half-breeds on.
Pithecia leucocephala, sexual differences of colour in.
Pithecia Satanas, beard of; resemblance of, to a negro.
Pits, suborbital, of Ruminants.
Pittidae, nidification of.
Placentata.
Plagiostomous fishes.
Plain-wanderer, Australian.