INDEX 



485 



LABYRINTHODONTIA, 164, 165 

 Lakes as cases of imperfect adapta- 

 tion, 150 

 Lamarck's hypothesis very different 



from the author's, 31 

 Land shells, experiments on resistance 



to salt water, 469 

 Laniadse, sexual colouring and nidi- 



fication of, 128 

 Larentia tripunctaria, 46 

 Law which has regulated the intro- 

 duction of new species, 3, 6 



confirmed by geographical distri- 

 bution, 8 

 high organisation of ancient 



animals consistent with, 11 

 of multiplication in geometrical 



progression, 142 

 of limited populations, 142 

 of heredity, 142 

 of variation, 142 

 of change of physical conditions, 



143 



of the equilibrium of nature, 143 

 as opposed to continual inter- 

 ference, 144 

 Laycock, Dr. , on law of " unconscious 



intelligence," 205 

 Leaf butterfly, appearance and habits 



of, 43 



Leaf-insects, 287 

 Leopoldinia major, 252 

 Lepidoptera, diurnal, 272 

 Leptalis, species of, mimic Heliconidse, 

 59 



gain a protection thereby, 137 

 a good case of mimicry, 362 

 Leptena erastus, 382 

 Leroy, on nest-building, 108 

 Lester, Mr. J. M., on wood -dove 



and robin, 40 

 Levaillant, on formation of a nest, 



112 

 Life does not imply consciousness, 209 



(note) 



Light, theory of, as producing colours, 

 341 



action of, on plants, 396 

 supposed direct action of, on 

 colours of flowers and fruits, 

 406 



Limenitis misippus, 63 

 Linnet imitating African finch, 105 



Lizards refusing certain moths and 



caterpillars, 85 

 devouring bees, 85 

 in the tropics, 302 

 Local causes of colour-development, 



382 



Locustidae, adaptive colouring of, 46 

 Locusts, richly coloured tropical, 288 

 Longicorns, 289 

 Loosestrife, Darwin's researches on 



fertilisation of, 465 

 Lophornis ornatus, very pugnacious, 



380 

 Lord Howe's island, white rail in, 



388 

 Lowne, Mr. B. T., on nest-building of 



ring-doves in confinement, 110 

 Luminousness of some insects a pro- 

 tection, 51 



MACAWS, 293 



Madagascar, white-marked butterflies 



of, 386 



Madeira, wingless insects of, ex- 

 plained by Darwin, 470 

 Maine, ancient shell-mounds of, 435 

 Malacoderms, a protected group, 66 

 Male birds, origin of ornamental 

 plumage of, 374 



which incubate, 379 

 Male humming- birds produce a shriller 



sound, 381 

 Males, theory of display of ornaments 



by, 375 



Malthus, Essay on Population, 20 

 Maluridje, 134 

 Malva sylvestris, M. rotundifolia, 



404 



Mammalia, supposed variations of, 

 comparable to those of butterflies, 

 386 

 local resemblances of, in Africa, 



387 

 Mammals, mimicry among, 76 



in the tropics, 306 



Man, does he build by reason or imi- 

 tation, 99 



his works mainly imitative, 113 

 antiquity of, 167, 180 

 difference of opinion as to his 



origin, 167 



unity or plurality of species, 168 

 persistence of type of, 169 



