Tenebrionidae, stridulation of.
Tennent, Sir J.E., on the tusks of the Ceylon Elephant; on the frequent absence of beard in the natives of Ceylon; on the Chinese opinion of the aspect of the Cingalese.
Tennyson, A., on the control of thought.
Tenthredinidae, proportions of the sexes in; fighting habits of male; difference of the sexes in.
Tephrodornis, young of.
Terai, in India.
Termites, habits of.
Terns, white; and black.
Terns, seasonal change of plumage in.
Terror, common action of, upon the lower animals and man.
Testudo elegans.
Testudo nigra.
Tetrao cupido, battles of; sexual difference in the vocal organs of.
Tetrao phasianellus, dances of; duration of dances of.
Tetrao scoticus.
Tetrao tetrix, pugnacity of the male.
Tetrao umbellus, pairing of; battles of; drumming of the male.
Tetrao urogalloides, dances of.
Tetrao urogallus, pugnacity of the male.
Tetrao urophasianus, inflation of the oesophagus in the male.
Thamnobia, young of.
Thecla, sexual differences of colouring in species of.
Thecla rubi, protective colouring of.
Thecophora fovea.
Theognis, selection in mankind.
Theridion, stridulation of males of.
Theridion lineatum.
Thomisus citreus, and Thomisus floricolens, difference of colour in the sexes of.
Thompson, J.H., on the battles of sperm-whales.
Thompson, W., on the colouring of the male char during the breeding season; on the pugnacity of the males of Gallinula chloropus; on the finding of new mates by magpies; on the finding of new mates by Peregrine falcons.
Thorax, processes of, in male beetles.
Thorell, T., on the proportion of sexes in spiders.
Thornback, difference in the teeth of the two sexes of the.
Thoughts, control of.
Thrush, pairing with a blackbird; colours and nidification of the.
Thrushes, characters of young.
Thug, remorse of a.
Thumb, absence of, in Ateles and Hylobates.
Thury, M., on the numerical proportion of male and female births among the Jews.
Thylacinus, possession of the marsupial sac by the male.
Thysanura.
Tibia, dilated, of the male Crabro cribrarius.
Tibia and femur, proportions of, in the Aymara Indians.
Tierra del Fuego, marriage-customs of.
Tiger, colours and markings of the.
Tigers, depopulation of districts by, in India.
Tillus elongatus, difference of colour in the sexes of.
Timidity, variability of, in the same species.
Tinca vulgaris.
Tipula, pugnacity of male.
Tits, sexual difference of colour in.
Toads, male, treatment of ova by some; male, ready to breed before the female.
Todas, infanticide and proportion of sexes; practice polyandry; choice of husbands amongst.
Toe, great, condition of, in the human embryo.
Tomicus villosus, proportion of the sexes in.
Tomtit, blue, sexual difference of colour in the.
Tonga Islands, beardlessness of the natives of.
Tooke, Horne, on language.
Tools, flint; used by monkeys; use of.
Topknots in birds.
Tortoise, voice of the male.
Tortures, submitted to by American savages.
Totanus, double moult in.
Toucans, colours and nidification of the; beaks and ceres of the.
Towns, residence in, a cause of diminished stature.
Toynbee, J., on the external shell of the ear in man.
Trachea, convoluted and imbedded in the sternum, in some birds; structure of the, in Rhynchaea.
Trades, affecting the form of the skull.
Tragelaphus, sexual differences of colour in.
Tragelaphus scriptus, dorsal crest of; markings of.
Tragopan, swelling of the wattles of the male, during courtship; display of plumage by the male; marking of the sexes of the.
Tragops dispar, sexual difference in the colour of.
Training, effect of, on the mental difference between the sexes of man.
Transfer of male characters to female birds.
Transmission, equal, of ornamental characters, to both sexes in mammals.
Traps, avoidance of, by animals; use of.
Treachery, to comrades, avoidance of, by savages.
Tremex columbae.
Tribes, extinct; extinction of.