i. 125;

on the hermaphroditism of the remote progenitors of the vertebrata, i. 207.

_Gelasimus_, use of the enlarged chela of the male, i. 331; pugnacity of males of, i. 333; proportions of the sexes in a species of, i. 315; rational actions of a, i. 334; difference of colour in the sexes of a species of, i. 336.

GEMMULES, sexual selection of, i. 285.

GENESIS, i. 318.

GENIUS, ii. 328; hereditary, i. 111.

GENIUS, fertility of men and women of, i. 171.

GEOFFROY-SAINT-HILAIRE, Isid., on the recognition of women by male quadrumana, i. 13; on the occurrence of a rudimentary tail in man, i. 29; on monstrosities, i. 113; on animal-like anomalies in the human structure, i. 125; on the correlation of monstrosities, i. 130; on the distribution of hair in man and monkeys, i. 149; on the caudal vertebrae of monkeys, i. 150; on correlated variability, i. 151; on the classification of man, i. 186; on the long hair on the heads of species of _Semnopithecus_, i. 192; on the hair in monkeys, i. 194; on the development of horns in female deer, ii. 244; and F. Cuvier, on the mandrill, ii. 293; on Hylobates, ii. 318, 320.

GEOGRAPHICAL distribution, as evidence of specific distinctions in man, i. 218.

GEOMETRAE, brightly coloured beneath, i. 397.

_Geophagus_, frontal protuberance of male, ii. 13, 20; eggs hatched by the male, in the mouth or branchial cavity, ii. 200.

GEORGIA, change of colour in Germans settled in, i. 246.

_Geotrupes_, stridulation of, i. 380, 382.

GERBE, M., on the nest-building of _Crenilabrus massa_ and _C. melops_, ii. 19.

GERLAND, Dr., on the prevalence of infanticide, i. 94; ii. 344, 364; on the extinction of races, i. 237, 238.

GERVAIS, P., on the hairiness of the gorilla, i. 149; on the mandrill, ii. 293.

GESTURE-LANGUAGE, i. 232.

GHOST-MOTH, sexual difference of colour in the, i. 399, 402.

GIBB, Sir D., on differences of the voice in different races of men, ii. 330.

GIBBON, Hoolock, nose of, i. 192.

GIBBONS, voice of, ii. 276.

GIRAFFE, mute, except in the rutting season, ii. 274; its mode of using the horns, ii. 250.

GIRAUD-TEULON, on the cause of short sight, i. 118.

GLANDERS, communicable between man and the lower animals, i. 11.

GLANDS, odoriferous, in mammals, ii. 279, 281.

_Glareola_, double moult in, ii. 80.

_Glomeris limbata_, difference of colour in the sexes of, i. 340.

GLOWWORM, female, apterous, i. 255; luminosity of the, i. 345.

GNATS, dances of, i. 349.

GNU, sexual differences in the colour of the, ii. 289.

GOAT, male, wild, falling on his horns, ii. 249; male, odour emitted by, ii. 279; male, wild, crest of the, ii. 282; Berbura, mane, dewlap, &c., of the male, ii. 284; Kemas, sexual difference in the colour of the, ii. 289.

GOATS, sexual differences in the horns of, i. 283; horns of, i. 289, ii. 246; domestic, sexual differences of, late developed, i. 293; beards of, ii. 282; mode of fighting of, ii. 249, 250.

GOAT-SUCKER, Virginian, pairing of the, ii. 49.

GOBIES, nidification of, ii. 20.

GOD, want of the idea of, in some races of men, i. 65.

GODRON, M., on variability, i. 112; on difference of stature, i. 115; on the want of connexion between climate and the colour of the skin,