Bats, 118 Beetles, 94 abundance of, in New Forest-clear- probable use of horns of, 202 on aspects of tropical vegetation, 67 on an Acacia inhabited by ants, 89 on a leaf-like locust, 93 on the habits of humming-birds, on uneatable bright-coloured frog, on use of light of glow-worm, 205 Bill of humming-birds, 129 how many known, 124 cases of local variation of colour influence of locality on colours of, which fertilize flowers, 273, 274 and insects blown to oceanic islands, of Palearctic Region, 316 Bullock on food of humming-birds, 153 Burchell, Dr., on the "stone mes- Butterflies, abundance of, in tropical conspicuousness of in tropical colours and form of, 74 females do not choose their part- with gaily-coloured females, 204 influence of locality on colours of, Buttressed trees, 31 CALAMUS, 41 C. Callithea, imitated by species of Cata- Callithea markii, 75 Campylopterus hemileucurus,/ pugna- Cecropias, trees inhabited by ants, 89 white-marked birds of, 263 Ceylon and Malaya, resemblances of Chameleons, 113 Chameleon, cause of changes of its Chemical action changes colours, 183 Chrysobactron Rossii, 238 Clark, Rev. Hamlet on leaf-cutting Climate of Equator, general features of, Climates of Timor, Angola, and Scot- Climbing plants of tropical forests, 37 Coloration of tropical birds, 110 Colour in nature, problems of, 159 how far constant, 161 as affected by heat and light, 161 of tropical butterflies, 164 changes of, in animals produced by voluntary change of, in animals, not usually influenced by coloured Colour, the nature of, 180 a normal product of organization, as a means of recognition, 196 not caused by female selection, 198 same theory of, in animals and of flowers and their distribution, Colour, nomenclature of, formerly im- Colour-development as illustrated by Gladstone, Mr., on the colour-sense, 245 Gosse, Mr. on Jamaica humming-birds, on the pugnacity of humming-birds, on food of humming-birds, 137 Grammatophyllums, 51 Green, why the most agreeable colour, Grisebach, on cause of vivid colours of Guilielma speciosa, 42 Gums from equatorial forest-trees, 36 Local causes of colour-development, 216 Lophornis ornatus, very pugnacious, 214 Lord Howe's Island, white rail in, 264 MACAWS, 100 M. Madagascar, white-marked butterflies Madagascar once united to Africa, 325 Male birds, origin of ornamental plum- Male birds which incubate, 212 Males, theory of display of ornaments Malva sylvestris, M. rotundifolia, 233 Mammalia, supposed variations of, com- local resemblances of, in Africa, 262 of miocene period in Euro-Asia, |