INDEX.

Collyrodes lacordairei, 95.
Colour, in animals, popular theories of, 47; frequent variations of, in domesticated animals, 48; influenced by need of concealment, 49; in deserts, 49, 50; in Arctic regions, 50, 51; nocturnal, 51; tropical, 52; special modifications of, 52; different distribution of, in butterflies and moths, 58; of autumnal and winter moths, 62; white, generally dangerous and therefore eliminated, 66; why it exists so abundantly although often injurious, 69; influenced by need of protection, 113; of female birds, 114; in relation to nidification of birds, 116; gaudy colours of many caterpillars, 117; in nature, general causes of, 126; local variations of, 173; sexual differences of, in birds, 239; in female birds, how connected with their nidification, 240, 246; more variable than structure or habits, and therefore more easily modified, 249; of flowers, as explained by Mr. Darwin, 262; often correlated with disease, 316.
Compsognathus, 300.
Condylodera tricondyloides, 97.
Consciousness, origin of, 360; Professor Tyndall on, 361; not a product of complex organization, 365.
Correlation of growth, 310.
Corynomalus sp., 92.
Cotingidæ, sexual colouring and nidification of, 244.
Cratosomus, a hard weevil, 94.
Crickets mimicking sand wasps, 98.
Cryptodontia, 299.

357