Part 35

CENTROPUS, sexual colouring and nidification of, 242.

Cephalodonta spinipes, 92.

Ceroxylus laceratus, imitates a moss-covered stick, 64.

CERTHIOLA, sexual colouring and nidification of, 244.

Cethosia aeole, 172; biblis, 172.

CETONIADAE, how protected, 73; similar colours of two sexes, 114.

CEYCOPSIS, 196.

Charis melipona, 96.

CHEMATOBIA, wintry colours of this genus, 62.

Chlamys pilula, resembles dung of caterpillars, 58.

CHRYSIDIDAE, how protected, 72.

CHRYSOMELIDAE, similar colouring of two sexes, 114.

CICINDELA, adaptive colour of various species of, 57.

Cilix compressa, resembles bird's dung, 63.

CLADOBATES, mimicking squirrels, 107.

CLASSIFICATION, form of true, 6; circular, inadmissible, 8; quinarian and circular, of Swainson, 46; argument from, against Mr. Darwin, 295.

CLIMACTERIS, sexual colouring and nidification of, 243.

COCCINELLIDAE, how protected, 72; similar colouring of sexes, 114.

COEXISTING varieties, 159.

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.

COTINGIDAE, sexual colouring and nidification of, 244.

CRATOSOMUS, a hard weevil, 94.