Page:Descent of Man 1875.djvu/653

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* Cyaxalcyon, sexual difference in colours of, 457; immature plumage of, 467.
 * Cychurs, sounds produced by, 304.
 * Cycnia mendica, sexual difference of, in colour, 316.
 * Cygnus ferus, trachea of, 374.
 * olor, white young of, 482.
 * Cyllo Lela, instability of the ocellatcd spots of, 428.
 * Cynanthus, variation in the genus, 423.
 * Cyinipidæ, proportions of the sexes in, 254.
 * Cynocephalus, difference of the young from the adult, 8; male, recognition of women by, 8; polygamons habits of species of, 217.
 * chacma. 70.
 * gelada, 81.
 * hamadryas, 81, 590; sexual difference of colour in, 537.
 * leucophus, colours of the sexes of, 533.
 * mormon, colours of the male, 538, 540, 5.30.
 * porcarius, mane of the male, 521.
 * Cypridina, proportions of the sexes in, 255.
 * Cyprinidæ, proportion of the sexes in the, 249.
 * , Indian, 343.
 * Cyprinodontidæ, sexual differences in the, 335, 337.
 * Cyprinus auratus, 342.
 * Cypris, relations of the sexes in, ‘255.
 * Cyrtodactylus rubidus, 354.
 * Cystophara cristata, hood of, 528.

D.


 * Dacelo, sexual difference of colour in, 457.
 * Guudichaudi, young male of, 457.
 * Dal-ripa, a kind of ptarmigan, 248.
 * Damalis albifrons, peculiar markings of, 544.
 * pygarga, peculiar markings of, 543.
 * Dampness of climate, supposed influence of, on the colour of the skin, 32, 193.
 * Danaidæ, 308.
 * Dances of birds, 380.
 * Dancing, universality of, 178.
 * Daniell, Dr., his experience of residence in West Africa, 195.
 * Darfur, protuberances artificially produced by natives of, 574.
 * Darwin, F., on the stridulation of Dermestes murinus, 302.
 * Dasychira pulibunda, sexual difference of colour in, 316.
 * Davis, A. H., on the pugnacity of the male stag-beetle, 300.
 * , J. B., on the capacity of the skull in various races of men, 54; on the beards of the Polynesians, 560.
 * Death-rate higher in towns than in rural districts, 139.
 * Death-tick, 306.
 * De Candolle, Alph., on a case of inherited power of moving the scalp, 13.
 * Declensions, origin of, 91.
 * Decoration in birds, 381.
 * Decticus, 285.
 * Deer, 233; development of the horns in, 233; spots of young, 464, 546; horns of, 503, 506; use of horns of, 510, 518; horns of a, in course of modification, 511; size of the horns of, 515; female, pairing with one male, whilst others are fighting for her, 522; male, attracted by the voice of the female, 537; male, odour emitted by, 529.
 * , Axis, sexual difference in the colour of the, 537.
 * , fallow, different coloured herds of, 540.
 * , Mantchurian, 546.
 * , Virginian, 546; Colour of the, not affected by castration, 535; colours of, 536.
 * Deerhound, Scotch, greater size of the male, 237, 516.
 * Defensive organs of mammals, 518.
 * De Geer, C., on a female spider destroying a male, 273.
 * Dekay, Dr., on the bladder-nose seal, 528.
 * Delorcnzi, G., division of malar bone, 39.
 * Demerara, yellow fever in, 194.
 * Dendrocygna, 465.
 * Dendropila frontalis, young of, 487.