- Charis melipona, 96.
- Chematobia, wintry colours of this genus, 62.
- Chlamys pilula, resembles dung of caterpillars, 58.
- Chrysididæ, how protected, 72.
- Chrysomelidæ, 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.
- Coccinellidæ, how protected, 72; similar colouring of sexes, 114.
- Coexisting varieties, 159.
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