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.