GAMMARUS. 
INDEX. 
GIBB. 
431 
on civilised nations, i. 168 ; on the 
sterility of sole daughters, i. 170 ; 
on the degree of fertility of people 
of genius, i. 171 ; on the early 
marriages of the poor, i. 173; on 
the ancient Greeks, i. 177 ; on the 
Middle Ages, i. 178; on the pro- 
gress of the United States, i. 179 ; 
on South African notions of beauty, 
ii. 347. 
4xammarus, use of the chelee of, i. 
331. 
Gammarus marinus, i, 334. 
<jANNETS, white only when mature, 
ii. 228.' 
Oanoidei, i. 204. 
Oanoid fishes, i. 212. 
Oaour, horns of the, ii. 247. 
Gap between man and the apes, i. 
200 . 
Gaper, sexes and young of, ii. 217. 
Gardner, on an example of ration- 
ality in a Gelasimus, i. 334. 
Garrulus glandarius, ii. 104. 
Gartner, on sterility of hybrid 
plants, i. 223. 
Gasteropoda, i. 324; pulmoniferous, 
courtship of, i. 324. 
•Gasterosteusj i. 271 ; nidification of, 
ii. 20. 
‘Gasterosteus leiurus, ii. 2, 14, 20. 
Gasterosteus trachurus, ii. 2. 
Gastrophora, wings of, brightly co- 
loured beneath, i. 397. 
Gauchos, want of humanity among 
the, i. 101. 
Gaudry, M., on a fossil monkey, i. 
197. 
Gama, seasonal change of plumage 
in, ii. 228. 
Geese, clanging noise made by, ii. 
51 ; pairing of different species of, 
ii. 114; Canada, selection of mates 
by, ii. 116. 
Gegenbaur, C., on the number of 
digits in the Ichthyopterygia, i. 
125 ; on the hermaphroditism of 
the remote progenitors of the ver- 
tebrata, 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 ; 
]*ational actions of a, i. 334 ; differ- 
ence 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 occur- 
rence 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 evi- 
dence of specific distinctions in man, 
i. 218. 
Geometra3, brightly coloured be- 
neath, i. 397. 
Geophagus, frontal protuberance of 
male, ii. 13, 20 ; eggs hatched by 
the male, in the mouth or bran- 
chial cavity, ii. 200. 
Georgia, change of colour in Ger- 
mans settled in, i. 246. 
Geotrupes, stridulation of, i. 380, 382. 
Gerbe, M., on the nest-building of 
Crenilahrus 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. 
