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.
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