moulting of Anthus, 392; on the moulting of bustards, plovers, and Gallus bankiva, 392; on the Indian honey-buzzard, 424; on sexual differences in the colour of the eyes of hornbills, 425; on Oriolus melanocephalus, 460; on Palœornis javanicus, 461; on the genus Ardetta, 461; on the peregrine falcon, 461; on young female birds acquiring male characters, 461; on the immature plumage of birds, 465; on representative species of birds, 468; on the young of Turnix, 476; on anomalous young of Lanius rufus and Colymbus glacialis, 482; on the sexes and young of the sparrows, 483; on dimorphism in some herons, 484; on the ascertainment of the sex of nestling bullfinches by pulling out breast-feathers, 484; on orioles breeding in immature plumage, 484; on the sexes and young of Buphus and Anastomus, 486; on the young of the blackcap and blackbird, 487; on the young of the stonechat, 487; on the white plumage ofAnastomus, 493; on the horns of Bovine animals, 505; on the horns of Antilope bezoartica, 507; on the mode of fighting of Ovis cycloceros, 508; on the voice of the Gibbons, 527; on the crest of the male wild goat, 531; on the colours of Portax picta, 535; on the colours of Antilope bezoartica, 536; on the colour of the Axis deer, 536; on sexual difference of colour in Hylobates hoolock, 537; on the hog-deer, 546; on the beard and whiskers in a monkey becoming white with age, 559.
- Boar, wild, polygamous in India, 217; use of the tusks by the, 513; fighting of, 518.
- Boardman, Mr., Albino birds in U. S., 419.
- Boitard and Corbié, MM., on the transmission of sexual peculiarities in pigeons, 230; on the antipathy shewn by some female pigeons to certain males, 418.
- Bold, Mr., on the singing of a sterile hybrid canary, 369.
- Bombet, on the variability of the standard of beauty in Europe, 596.
- Bombus, difference of the sexes in, 292.
- Bombycidæ, coloration of, 313; pairing of the, 318; colours of, 318.
- Bombycilla carolinensis, red appendages of, 461.
- Bombyx cynthia, 278; proportion of the sexes in, 250, 253; pairing of, 318.
- mori, difference of size of the male and female cocoons of, 278; pairing of, 318.
- Pernyi, proportion of sexes of, 253.
- Yamamai, 278; M. Personnat on, 251; proportion of sexes of, 253.
- Bonaparte, C. L., on the call-notes of the wild turkey, 375.
- Bond, F., on the finding of new mates by crows, 408.
- Bone, implements of, skill displayed in making, 49.
- Boner, C., on the transfer of male characters to an old female chamois, 504; on the habits of stags, 515; on the pairing of red deer, 522.
- Bones, increase of, in length and thickness, when carrying a greater weight, 32.
- Bonizzi, P., difference of colour in sexes of pigeons, 230.
- Bonnet monkey, 151.
- Bonwick, J., extinction of Tasmanians, 183, 184.
- Boomerang, 145.
- Boreus hyemalis, scarcity of the male, 254.
- Bory St. Vincent, on the number of species of man, 174; on the colours of Labrus pavo, 342.
- Bos etruscus, 505.
- gaurus, horns of, 505.
- moschatus, 529.
- primigenius, 501.
- sondaicus, horns of, 505; colours of, 536.
- Botocudos, 144; mode of life of, 197; disfigurement of the ears and lower lip of the, 575.
- Boucher de Perthes, J. C. de, on the antiquity of man, 2.
- Bourbon, proportion of the sexes in a species of Papilio from, 250.
