Porpitae, bright colours of some.
Portax picta, dorsal crest and throat-tuft of; sexual differences of colour in.
Portunus puber, pugnacity of.
Potamochoerus pencillatus, tusks and facial knobs of the.
Pouchet, G., the relation of instinct to intelligence; on the instincts of ants; on the caves of Abou-Simbel; on the immunity of negroes from yellow fever; change of colour in fishes.
Pouter pigeon, late development of the large crop in.
Powell, Dr., on stridulation.
Power, Dr., on the different colours of the sexes in a species of Squilla.
Powys, Mr., on the habits of the chaffinch in Corfu.
Pre-eminence of man.