Pheasant, Golden, display of plumage by the male; age of mature plumage in the; sex of young, ascertained by pulling out head-feathers.
Pheasant, Kalij, drumming of the male.
Pheasant, Reeve's, length of the tail in.
Pheasant, Silver, triumphant male, deposed on account of spoiled plumage; sexual coloration of the.
Pheasant, Soemmerring's.
Pheasant, Tragopan, display of plumage by the male; marking of the sexes of the.
Pheasants, period of acquisition of male characters in the family of the; proportion of sexes in chicks of; length of the tail in.
Philters, worn by women.
Phoca groenlandica, sexual difference in the coloration of.
Phoenicura ruticilla.
Phosphorescence of insects.
Phryganidae, copulation of distinct species of.
Phryniscus nigricans.
Physical inferiority, supposed, of man.
Pickering, on the number of species of man.
Picton, J.A., on the soul of man.
Picus auratus.
Picus major.
Pieris.
Pigeon, female, deserting a weakened mate; carrier, late development of the wattle in; pouter, late development of crop in; domestic, breeds and sub-breeds of.
Pigeons, nestling, fed by the secretion of the crop of both parents; changes of plumage in; transmission of sexual peculiarities in; Belgian, with black-streaked males; changing colour after several moultings; numerical proportion of the sexes in; cooing of; variations in plumage of; display of plumage by male; local memory of; antipathy of female, to certain males; pairing of; profligate male and female; wing-bars and tail-feathers of; supposititious breed of; pouter and carrier, peculiarities of, predominant in males; nidification of; Australian; immature plumage of the.
Pigs, origin of the improved breeds of; numerical proportion of the sexes in; stripes of young; tusks of miocene; sexual preference shewn by.
Pike, American, brilliant colours of the male, during the breeding season.
Pike, reasoning powers of; male, devoured by females.
Pike, L.O., on the psychical elements of religion.
Pimelia striata, sounds produced by the female.
Pinel, hairiness in idiots.
Pintail, drake, plumage of; pairing with a wild duck.
Pintail Duck, pairing with a widgeon.
Pipe-fish, filamentous; marsupial receptacles of the male.
Pipits, moulting of the.
Pipra, modified secondary wing-feathers of male.
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.
Planariae, bright colours of some.
Plantain-eaters, colours and nidification of the; both sexes of, equally brilliant.
Plants, cultivated, more fertile than wild; Nageli, on natural selection in; male flowers of, mature before the female; phenomena of fertilisation in.
Platalea, change of plumage in.
Platyblemus.
Platycercus, young of.
Platyphyllum concavum.
Platyrrhine monkeys.
Platysma myoides.
Plecostomus, head-tentacles of the males of a species of.
Plecostomus barbatus, peculiar beard of the male.
Plectropterus gambensis, spurred wings of.
Ploceus.
Plovers, wing-spurs of; double moult in.
Plumage, changes of, inheritance of, by fowls; tendency to analogous variation in; display of, by male birds; changes of, in relation to season; immature, of birds; colour of, in relation to protection.
Plumes on the head in birds, difference of, in the sexes.
Pneumora, structure of.
Podica, sexual difference in the colour of the irides.
Poeppig, on the contact of civilised and savage races.
Poison, avoidance of, by animals.
Poisonous fruits and herbs avoided by animals.
Poisons, immunity from, correlated with colour.
Polish fowls, origin of the crest in.
Pollen and van Dam, on the colours of Lemur macaco.
Polyandry, in certain Cyprinidae; among the Elateridae.