Equatorial climate, uniformity of, in all | Fiji islands, pale butterflies of, 385 parts of the world, 230 local diversities of, 231 Equatorial zone, temperature of, 219 Eroschema poweri, 66 Erycinidæ mimic Heliconidæ, 60 Estrelda, sexual colouring and nidifi- Eucnemidæ, mimicking a Malaco- Eudromias morinellus, 132 Eugenes fulgens, 319 Euglossa dimidiata, 69 Eumorphidæ, a protected group, 52 Eunica and Siderone, resemblance of Euplæa midamus, 62, 79 E. rhadamanthus, 62 Eurylamidæ, sexual colouring and Evaporation and condensation, equal- Extinct animals, intermediate forms Extinction of lower races, 177 Fire-ants, 280 Fishes, protective colouring of, 41 causes of general coloration of, Fissirostral birds, nests of, 123 and insects, 266 of temperate zones brilliantly comparatively scarce in tropical attractive colours of, 400 fertilised by insects, 400 attractive odours of, 402 when sweet not conspicuously attractive grouping of, 403 when wind-fertilised not coloured, relation of colours of, to distribu- and fruits, recent views as to of Auckland and Campbell's isles, 244 Foliage, two chief types of, in tropical Forest-trees, characteristics of, in equa- | Goliath cuckoo, 297 colours of productions of, 342 Gardener, Dr., on a large water Boa, Gastropacha querci, protective colour Gaudry, M., on fossil mammals of Geiger, on ancient perception of colour, Geographical distribution, dependent its agreement with law of intro- of allied species and groups, 10 Geology, facts proved by, 3, 6 Ginger-worts, 253 Giraffe, how it acquired its long neck, Green birds almost confined to the Green, why the most agreeable colour, Grisebach, on cause of vivid colours of Guilielma speciosa, 250 Gums from equatorial forest-trees, 245 HABENARIA chlorantha, 402 of children and savages analogous of humming-birds, 316 Hairy covering of Mammalia, use of, absence of, in man remarkable, the want of it felt by savages, 195 could not have been abolished by natural selection, 196 Harpagus diodon, 75 Glacial period, man in America Heat due to condensation of atmo- during, 439 Gladstone, Mr., on the colour-sense, 413 Glæa, autumnal colours of this genus, 45 spheric vapour, 227 changes colours, 357 Heiliplus, a hard genus of Curculion- Heliconidæ, the objects of mimicry, their secretions, 56 Heliconidæ, not attacked by birds, 57 | ICTERIDE, sexual colouring and nidi- semblances of, 383 Helladotherium, 165 fication of, 127 Imitation, the effects of, in man's Hemiptera, protected by bad odour, Increase, checks to, studied by 52 Herbert, Rev. W., on song of birds, Herring-gull, change of nesting habits Hesthesis, Longicorns resembling ants, Hipparion, 164 Hispidæ, imitated by Longicorns, 65 Homalocranium semicinctum, 72 Horns of beetles, probable use of, 372 Humming-birds, number of, 312, 319 structure of, 313 colours and ornaments of, 314 motions and habits of, 316 Darwin, 458 Interference colours in animals, 358 display of ornaments by males, 320 Islands, influence of locality on colour food of, 320 nests of, 322 geographical distribution and vari- ation of, 322 of Juan Fernandez, 324 feather-tracts of, 333 resemblance of swifts to, 333 differences from sun-birds, 334 Huxley, Professor, on "Physical Basis of Life," 207 on volition, 212 Hyænictis, 165 genus, 45 in, 384 KALLIMA inachis and Kallima para- Hybernia, wintry colours of this Kerner on the unbidden guests of plants, 466 Laniadæ, sexual colouring and nidi- Locusts, richly coloured tropical, 288 fication of, 128 Larentia tripunctaria, 46 Law which has regulated the intro- confirmed by geographical distri- high organisation of ancient of limited populations, 142 of heredity, 142 of variation, 142 Longicorns, 289 Loosestrife, Darwin's researches on Lophornis ornatus, very pugnacious, Lord Howe's island, white rail in, Lowne, Mr. B. T., on nest-building of MACAWS, 293 of change of physical conditions, Madagascar, white-marked butterflies 143 of the equilibrium of nature, 143 Laycock, Dr., on law of "unconscious Leaf butterfly, appearance and habits Leopoldinia major, 252 Leptalis, species of, mimic Heliconidæ, gain a protection thereby, 137 Levaillant, on formation of a nest, Life does not imply consciousness, 209 Light, theory of, as producing colours, action of, on plants, 396 Limenitis misippus, 63 Linnet imitating African finch, 105 of, 386 insects of, ex- which incubate, 379 Male humming-birds produce a shriller Males, theory of display of ornaments Malthus, Essay on Population, 20 Malva sylvestris, M. rotundifolia, Mammalia, supposed variations of, local resemblances of, in Africa, Mammals, mimicry among, 76 his works mainly imitative, 113 origin, 167 unity or plurality of species, 168 Man, importance of mental and moral his dignity and supremacy, 181 his feet and hands, difficulties on his voice, 198 his mental faculties, 198 highly developed at very early antiquity of intellectual, 424 in America coeval with extinct in America in the glacial period, fossil remains of, in the auri- Mantidæ, adaptive colouring of, 46 tropical forms of, 286 Mantis resembling an orchis - flower, 349 Mangroves, 262 Manicaria saccifera, 249 Marmosets, 307 Marshall, Messrs., on barbets, 297 size of leaves of arctic plants, 407 Mr. Bayma on, 208 Mauritia, palm, 248 Mechanitis and Methona, mimicked Mecocerus gazella, 67 Megapodidæ, sexual colouring and Meldola, Mr. R., on variable colouring Meliphagidæ in Auckland isles prob- Mimeta, mimicking Tropidorhynchus, Mimicry, meaning of the word, 54 among Lepidoptera, 55 how it acts as a protection, 57 64 |