ii. 345, 347;

compression of the feet of, ii. 352.

CHINSURDI, his opinion of beards, ii. 341, 349.

_Chlamydera maculata_, ii. 70.

_Chloeon_, pedunculated eyes of the male of, i. 341.

_Chloephaga_, coloration of the sexes in, ii. 178.

_Chlorocoelus Tanana_ (figured), i. 355.

CHORDA DORSALIS, i. 207.

CHOUGH, red beak of the, ii. 227.

CHROMIDAE, frontal protuberance in male, ii. 13; sexual differences in colour of, ii. 20.

_Chrysemys picta_, long claws of the male, ii. 28.

_Chrysococcyx_, characters of young of, ii. 185.

_Chrysomela cerealis_, bright colours of, i. 367.

CHRYSOMELIDAE, stridulation of, i. 379.

_Cicada pruinosa_, i. 351.

_Cicada septendecim_, i. 351.

CICADAE, songs of the, i. 350; rudimentary sound-organs in females of, i. 359.

CICATRIX of a burn, causing modification of the facial bones, i. 147.

_Cichla_, frontal protuberance of male, ii. 13.

CIMETIERE du Sud, Paris, i. 28.

_Cincloramphus cruralis_, large size of male, ii. 43.

_Cinclus aquaticus_, ii. 170.

CINGALESE, Chinese opinion of the appearance of the, ii. 345.

CIRRIPEDES, complemental males of, i. 255.

CIVILISATION, effects of, upon natural selection, i. 170; influence of, in the competition of nations, i. 239.

CLANGING of Geese, &c., ii. 51.

CLAPAREDE, E., on natural selection applied to man, i. 137.

CLARKE, on the marriage-customs of the Kalmucks, ii. 373.

CLASSIFICATION, i. 188.

CLAUS, C., on the sexes of _Saphirina_, i. 336.

CLEFT-PALATE, inherited, i. 121.

_Climacteris erythrops_, sexes of, ii. 206.

CLIMATE, i. 115; cool, favourable to human progress, i. 167; power of supporting extremes of, by man, i. 237; want of connexion of, with colour, i. 241.

CLOACA, existence of a, in the early progenitors of man, i. 207.

CLOACAL passage existing in the human embryo, i. 16.

CLUB, origin of the, i. 234.

CLUCKING of fowls, ii. 51.

_Clythra 4-punctata_, stridulation of, i. 379.

COBRA, ingenuity of a, ii. 31.

_Coccus_, i. 186.

COCCYX, i. 29, 30; in the human embryo, i. 16; convoluted body at the extremity of the, i. 30; imbedded in the body, i. 151.

COCHIN-CHINA, notions of beauty of the inhabitants of, ii. 345, 347.

COCK, game, killing a kite, ii. 44; blind, fed by its companions, i. 77; comb and wattles of the, ii. 98; preference shown by the, for young hens, ii. 121; game, transparent zone in the hackles of a, ii. 136.

COCK of the rock, ii. 100.

COCKATOOS, ii. 226, 228, 230; nestling, ii. 109; black, immature plumage of, ii. 188.

COELENTERATA, absence of secondary sexual characters in, i. 321.

COFFEE, fondness of monkeys for, i. 12.

COLD, supposed effects of, i. 116; power of supporting, by man, i. 237.

COLEOPTERA, i. 366; stridulant organs of, discussed, i. 381.

COLLINGWOOD, C., on the pugnacity of the butterflies of Borneo,