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.
Trichius, difference of colour in the sexes of a species of.
Trigla.
Trigonocephalus, noise made by tail of.
Trimen, R., on the proportion of the sexes in South African butterflies; on the attraction of males by the female Lasiocampa quercus; on Pneumora; on difference of colour in the sexes of beetles; on moths brilliantly coloured beneath; on mimicry in butterflies; on Gynanisa Isis, and on the ocellated spots of Lepidoptera; on Cyllo Leda.
Tringa, sexes and young of.