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676
semnopithecus.
INDEX.
sitana.

  • Semnopithecus nasica, nose of, 150.
  • —— nemœus, colouring of, 551.
  • —— rubicundus, ornamental hair on the head of, 548.
  • Senses, inferiority of Europeans to savages in the, 33.
  • Sentinels, among animals, 100, 107.
  • Serpents, instinctively dreaded by apes and monkeys, 67, 71.
  • Serranus, hermaphroditism in, 161.
  • Sex, inheritance limited by, 230.
  • Sexes, relative proportions of, in man, 242, 558; probable relation of the, in primeval man, 591.
  • Sexual characters, secondary, 207; relations of polygamy to, 217; transmitted through both sexes, 226; gradation of, in birds, 430.
  • —— and natural selection, contrasted, 226.
  • —— characters, effects of the loss of 231; limitation of, 231.
  • —— differences in man, 8.
  • —— selection, explanation of, 209, 213, 220; influence of, on the colouring of Lepidoptera, 319; objections to, 495; action of, in mankind, 595.
  • —— similarity, 255.
  • Shaler, Prof., sizes of sexes in whales, 516.
  • Sharks, prehensile organs of male, 331.
  • Sharpe, Dr., Europeans in the tropics, 195.
  • ——, R. B., on Tanysiptera sylvia, 451; on Ceryle, 457; on the young male of Dacelo Gaudichaudi, 467.
  • Shaw, Mr., on the pugnacity of the male salmon, 332.
  • ——, J., on the decorations of birds, 382.
  • Sheep, danger-signals of, 100; sexual differences in the horns of, 230; horns of, 235, 505; domestic, sexual differences of, late developed, 237; numerical proportion of the sexes in, 246; inheritance of horns by one sex, 505; effect of castration, 506; mode of fighting of, 508; arched foreheads of some, 532.
  • —— Merino, loss of horns in females of, 231; horns of, 235.
  • Shells, difference in form of, in male and female Gasteropoda, 262; beautiful colours and shapes of, 264.
  • Shield-drake, pairing with a common duck, 414; New Zealand, sexes and young of, 479.
  • Shooter, J., on the Kaffirs, 579; on the marriage-customs of the Kaffirs, 598.
  • Shrew-mice, odour of, 528.
  • Shrike, Drongo, 461.
  • Shrikes, characters of young, 465.
  • Shuckard, W. E., on sexual differences in the wings of Hymenoptera, 277.
  • Shyness of adorned male birds, 403.
  • Siagonium, proportions of the sexes in, 253; dimorphism in males of, 299.
  • Siam, proportion of male and female births in, 245.
  • Siamese, general beardlessness of the, 560; notions of beauty of the, 578; hairy family of, 601.
  • Sidgwick, H., on morality in hypothetical bee community, 99; our actions not entirely directed by pain and pleasure, 120.
  • Siebold, C. T. von, on the proportion of sexes in the Apus, 255; on the auditory apparatus of the stridulant Orthoptera, 283.
  • Sight, inheritance of long and short, 33.
  • Signal-cries of monkeys, 87.
  • Silk-moth, proportion of the sexes in, 250, 251; Aïlanthus, Prof. Canestrini, on the destruction of its larvæ by wasps, 251; difference of size of the male and female cocoons of the, 278; pairing of the, 318.
  • Simiadæ, 152; their origin and divisions, 165.
  • Similarity, sexual, 225.
  • Singing of the Cicadæ and Fulgoridæ, 281; of tree-frogs, 350; of birds, object of the, 368.
  • Sirenia, nakedness of, 56.
  • Sirex juvencus, 292.
  • Siricidæ, difference of the sexes in, 292.
  • Siskin, 394; pairing with a canary, 415.
  • Sitana, throat-pouch of the males of, 355, 358.