Part 45

STALACHTIS, a genus of Erycinidae, the object of mimicry, 84.

STINGING insects generally conspicuously coloured, 72.

STREPTOCITTA, 196.

STURNIDAE, sexual colouring and nidification of, 244.

STURNOPASTOR, 239.

ST. HELENA, 10.

Streptolabis hispoides, 93.

STRUGGLE for existence, 28, 33.

SURVIVAL of the fittest, law of, stated, 33; its action in determining colour, 67.

SWAINSON'S circular and quinarian theory, 45.

SYLVIADAE, sexual colouring and nidification of, 245.

SYNAPTA, 258.

TACHORNIS phoenicobea, 228.

Tachyris hombronii, 172; ithome, 172; lycaste, 172; lyncida, 172; nephele, 172; nero, 172; zarinda, 172.

TANAGRIDAE, sexual colouring and nidification of, 245.

TAPIR, 299.

TELEPHORI, similar colouring of two sexes, 114.

TEMPERATE and cold climates favourable to civilization, 318.

THECODONTIA, 299.

THERATES, mimicked by Heteromera, 95.

Thyca descombesi, 172; hyparete, 172; rosenbergii, 172; zebuda, 172.

TIGER, adaptive colouring of, 52.

TIMES newspaper on Natural Selection, 296.

TOOLS, importance of, to man, 314.

TREE FROGS, probable mimicry by, 103.

TRICONDYLA, 97.

TRIMEN, Mr., on rank of the Papilionidae, 136.

TRISTRAM, Rev. H., on colours of desert animals, 50.