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670
polygenists.
INDEX.
puff-birds.

domestication, 220; supposed increase of female births by, 245; in the stickleback, 332.

  • Polygenists, 176.
  • Polynesia, prevalence of infanticide in, 592.
  • Polynesians, wide geographical range of 29; difference of stature among the, 31; crosses of, 173; variability of, 174; heterogeneity of the, 192; aversion of, to hairs on the face, 581.
  • Polyplectron, number of spurs in, 364; display of plumage by the male, 396; gradation of characters in, 431; female of, 471.
  • —— chinquis, 397, 432.
  • —— Hardwickii, 432.
  • —— malaccense, 432, 433.
  • —— Napoleonis, 432, 433.
  • Polyzoa, 262.
  • Pontoporeia affinis, 266.
  • Porcupine, mute, except in the rutting season, 526.
  • Pores, excretory, numerical relation of, to the hairs in sheep, 198.
  • Porpitœ, bright colours of some, 260.
  • Portax picta, dorsal crest and throattuft of, 530; sexual differences of colour in, 535, 543.
  • Portunus puber, pugnacity of, 269.
  • Potamochœrus penicillatus, tusks and facial knobs of the, 520.
  • Pouchet, G., the relation of instinct to intelligence, 67; on the instincts of ants, 147; on the caves of Abou-Simbel, 168; on the immunity of negroes from yellow fever, 193; change of colour in fishes, 344.
  • Pouter pigeon, late development of the large crop in, 238.
  • Powell, Dr., on stridulation, 281.
  • Power, Dr., on the different colours of the sexes in a species of Squilla, 271.
  • Powys, Mr., on the habits of the chaffinch in Corfu, 248.
  • Pre-eminence of man, 48
  • Preference for males by female birds, 414, 420; shewn by mammals, in pairing, 522.
  • Prehensile organs, 209.
  • Presbytis entellus, fighting of the male, 562.
  • Preyer, Dr., on function of shell of ear, 14; on supernumerary mammæ in women, 37.
  • Prichard, on the difference of stature among the Polynesians, 31; on the connection between the breadth of the skull in the Mongolians and the perfection of their senses, 34; on the capacity of British skulls of different ages, 55; on the flattened heads of the Colombian savages, 575; on Siamese notions of beauty, 578; on the beardlessness of the Siamese, 581; on the deformation of the head among American tribes and the natives of Arakhan, 583.
  • Primary sexual organs, 207.
  • Primates, 149, 205; sexual differences of colour in, 537.
  • Primogeniture, evils of, 135.
  • Prionidæ, difference of the sexes in colour, 294.
  • Proctotretus multimaculatus, 358.
  • —— tenuis, sexual difference in the colour of, 358.
  • Profligacy, 137.
  • Progenitors, early, of man, 160.
  • Progress, not the normal rule in human society, 133; elements of, 141.
  • Prong-horn antelope, horns of, 234.
  • Proportions, difference of, in distinct races, 167.
  • Protective colouring in butterflies, 312; in lizards, 358; in birds, 473, 489; in mammals, 542.
  • —— nature of the dull colouring of female Lepidoptera, 321, 322, 324.
  • —— resemblances in fishes, 344.
  • Protozoa, absence of secondary sexual characters in, 260.
  • Pruner-Bey, on the occurrence of the supra-condyloid foramen in the humerus of man, 22; on the colour of negro infants, 557.
  • Prussia, numerical proportion of male and female births in, 243.
  • Psocus, proportions of the sexes in, 254.
  • Ptarmigan, monogamous, 219; summer and winter plumage of the, 390, 392; nuptial assemblages of, 406; triple moult of the, 462; protective coloration of, 473.
  • Puff-birds, colours and nidification of the, 455.