Contributions to the Theory of Natural Selection

numbers that die annually, 30 (#x2_x_2_i18);

mimicry among, 103 (#x3_x_3_i53);

dull colour of females, 114 (#x4_x_4_i3);

nidification as affecting colour of females, 116 (#x4_x_4_i5);

refusing the gooseberry caterpillar, 119 (#x4_x_4_i7);

the highest in rank and organization, 137 (#x4_x_4_i33);

dimorphism in, 155 (#x4_x_4_i51);

why peculiar nest built by each species, 215 (#x6_x_6_i40)-219 (#x6_x_6_i46);

build more perfect nests as they grow older, 224 (#x6_x_6_i64), 227 (#x6_x_6_i69);

alter and improve their nests, 226 (#x6_x_6_i69);

sexual differences of colour in, 239 (#x7_x_7_i13).

Bombus hortorum, 90 (#x3_x_3_i34).

Bombycilla, garrula, colours and nidification of, 255 (#x7_x_7_i70).

Bombylius, 98 (#x3_x_3_i43).

Brain of the savage but slightly less than that of civilized man, 336 (#x9_x_9_i56);

size of, an important element of mental power, 335 (#x9_x_9_i54);

of savage races larger than their needs require, 338 (#x9_x_9_i57), 343 (#x9_x_9_i62);

of man and of anthropoid apes compared, 338 (#x9_x_9_i57).

Broca, Professor Paul, on the fine crania of the cave men, 337 (#x9_x_9_i56).

Bryophila glandifera and B. perla protectively coloured, 63 (#x2_x_2_i67).

Bucerotidæ, sexual colouring and nidification of, 241 (#x7_x_7_i20).

Bucconidæ, sexual colouring and nidification of, 241 (#x7_x_7_i20).

Buff-tip moth, resembles a broken stick, 62 (#x2_x_2_i66).

Buildings of various races do not change, 213 (#x6_x_6_i40).

Buprestidæ, resembling bird’s dung, 57 (#x2_x_2_i60);

similar colours in two sexes, 114 (#x4_x_4_i3).

Butterflies, value of, in studying “natural selection,” 131 (#x4_x_4_i29);

varieties of, in Sardinia and Isle of Man, 178 (#x5_x_5_i31).

CACIA anthriboides, 94 (#x3_x_3_i37).

Callizona acesta, protective colouring of, 59 (#x2_x_2_i64).

Calornis, 239 (#x7_x_7_i13).

Capitonidæ, sexual colouring and nidification of, 241 (#x7_x_7_i20).

Capnolymma stygium, 94 (#x3_x_3_i37).

Carabidæ, special protection among, 72 (#x3_x_3_i9);

similar colouring of two sexes, 114 (#x4_x_4_i3).

Cassidæ, resemble dew drops, 58 (#x2_x_2_i62).

Caterpillars, mimicking a poisonous snake, 99 (#x3_x_3_i44);

gaudy colours of, 117 (#x4_x_4_i5);

various modes of protection of, 118 (#x4_x_4_i7);

gooseberry caterpillar, 119 (#x4_x_4_i7);

Mr. Jenner Weir’s observations on, 119 (#x4_x_4_i7);

Mr. A. G. Butler’s observations on, 121 (#x4_x_4_i10).

Celebes, local modifications of form in, 170 (#x5_x_5_i11);

probable cause of these, 176 (#x5_x_5_i28);

remarkable zoological peculiarities of, 195 (#x6_pgepubid00060)-199 (#x6_x_6_i15).

Centropus, sexual colouring and nidification of, 242 (#x7_x_7_i26).

Cephalodonta spinipes, 92 (#x3_x_3_i36).

Ceroxylus laceratus, imitates a moss-covered stick, 64 (#x2_x_2_i68).

Certhiola, sexual colouring and nidification of, 244 (#x7_x_7_i38).

Cethosia æole, 172 (#x5_x_5_i18);