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of the Bushwomen, 598.
 * Burke, on the number of species of man, 174.
 * Burmese, colour of the beard in, 558.
 * Burton, Capt., on negro ideas of female beauty, 579; on a universal ideal of beauty, 582.
 * Bushmen, 64.
 * Bushwoman, extravagant ornamentation of a, 577.
 * Bushwomen, hair of, 167; marriage-customs of, 598.
 * Bustard, throat-pouch of the male, 373; humming noise produced by a male, 377; Indian, ear-tufts of, 384.
 * Bustards, occurrence of sexual differences and of polygamy among the, 219; love-gestures of the male, 380; double moult in, 390, 392.
 * Butler, A. G., on sexual differences in the wings of Aricoris epitus, 277; courtship of butterflies, 307; on the colouring of the sexes in species of Thecla, 310; on the resemblance of Iphias glaucippe to a leaf, 313; on the rejection of certain moths and caterpillars by lizards and frogs, 326.
 * Butterfly, noise produced by a, 307; Emperor, 307, 308; meadow brown, instability of the ocellated spots of, 428.
 * Butterflies, proportion of the sexes in, 250; forelegs atrophied in some male, 277; sexual difference in the neuration of the wings of, 277; pugnacity of male, 307; protective resemblances of the lower surface of, 311; display of the wings by, 314; white, alighting upon bits of paper, 317; attracted by a dead specimen of the same species, 317; courtship of, 317; male and female, inhabiting different stations, 321.
 * Buxton, C., observations on macaws, 102; on an instance of benevolence in a parrot, 411.
 * Buzzard, Indian honey-, variation in the crest of, 424.


 * Cabbage butterflies, 312.
 * Cachalot, large head of the male, 502.
 * Cadences, musical, perception of, by animals, 569.
 * Cæcum, 20; large, in the early progenitors of man, 160.
 * Cairina moschata, pugnacity of the male, 362.
 * Californian Indians, decrease of, 258.
 * Callianassa, chelæ of, figured, 267.
 * Callidryas, colours of sexes, 318.
 * Callionymus lyra, characters of the male, 335.
 * Callorhinus ursinus, relative size of the sexes of, 515; courtship of, 522.
 * Calotes maria, 358.
 * nigrilabris, sexual difference in the colour of, 357.
 * Cambridge, O. Pickard, on the sexes of spiders, 255; on the size of male Nephila, 273.
 * Camel, canine teeth of male, 502, 514.
 * Campbell, J., on the Indian elephant, 218; on the proportion of male and female births in the harems of Siam, 245.
 * Campylopterus hemileucurus, 248.
 * Canaries distinguishing persons, 412.
 * Canary, polygamy of the, 220; change of plumage in, after moulting, 238; female, selecting the best singing male, 268; sterile hybrid, singing of a, 369; female, singing of the, 370; selecting a greenfinch, 415; and siskin, pairing of, 415.
 * Canestrini, G., on rudimentary characters and the origin of man, 3; on rudimentary characters, 11; on the movement of the ear in man, 14; on the variability of the vermiform appendage in man, 21; on the abnormal division of the malar bone in man, 39; on abnormal conditions of the human uterus, 39; on the persistence of the frontal suture in man, 39; on the proportion of the sexes in silk-moths, 250, 251; secondary sexual characters of spiders, 272.
 * Cancer pagurus, 266.
 * Canfield, Dr., on the horns of the Antilocapra 234.
 * Canine teeth in man, 46; diminution of, in man, 53; diminution of, in horses, 53; disappearance of, in