INDEX 



479 



Cassidae, resemble dew-drops, 42 

 Caterpillars, mimicking a poisonous 



snake, 70 



gaudy colours of, 82 



various modes of protection of, 



83 



gooseberry caterpillar, 84 

 Mr. Jenner Weir's observations 



on, 84 

 Mr. A. G. Butler's observations 



on, 85 



Cattleyas, 257 



Cecropias, trees inhabited by ants, 285 

 Celebes, large and peculiarly formed 



butterflies of, 385 



white-marked birds of, 388 

 Centipedes, 291 

 Centropus, sexual colouring and nidifi- 



cation of, 125 

 Cephalodonta spinipes, 66 

 Ceroxylus laceratus, imitates a moss- 

 covered stick, 47 

 Certhiola, sexual colouring and nidifi- 



cation of, 127 

 Cetoniadse, how protected, 53 



similar colours of two sexes, 80 

 Chaffinch, curious nest built by, in 



New Zealand, 111 

 Chameleon, cause of changes of its 



colour, 347 

 Chameleons, 303 

 Charis melipona, 68 

 Chematobia, wintry colours of this 



genus, 45 



Chemical action changes colours, 357 

 Chili, humming-birds of, 324 

 Chiroptera, 307 

 Chlamys pilula, resembles dung of 



caterpillars, 42 



Chrysididse, how protected, 52 

 Chrysobactron Rossii, 408 

 Chrysomelidae, similar colouring of 



two sexes, 80 

 Cicindela, adaptive colour of various 



species of, 42 

 Cilix compressa, resembles bird's 



dung, 46 



Cladobates, mimicking squirrels, 76 

 Claparede, M., criticism on Mr. 



Wallace's views as to origin of man, 



205 (note) 

 Clark, Rev. Hamlet, on leaf-cutting 



ants, 282 



Classification, form of true, 6 

 circular, inadmissible, 7 

 quinarian and circular, of Swain- 

 son, 34 



argument from, against Mr. Dar- 

 win, 162 

 Climacteris, sexual colouring and 



nidification of, 126 

 Climate of Equator, general features 



of, 229 



Climates of Timor, Angola, and Scot- 

 land compared, 227 

 Climbing plants of tropical forests, 

 246 



uses of, 247 

 Coccinellidae, how protected, 52 



similar colouring of sexes, 80 

 Cockatoos, 293 



Cocos islands visited by Darwin, 456 

 Collyrodes lacordairei, 67 

 Coloration of tropical birds, 300 

 Colour, in animals, popular theories 

 of, 36 



frequent variations of, in domes- 

 ticated animals, 36 

 influenced by need of conceal- 

 ment, 37 

 in deserts, 37 

 in arctic regions, 37, 38 

 nocturnal, 38 

 tropical, 38 



special modifications of, 39 

 different distribution of, in butter- 

 flies and moths, 43 

 of autumnal and winter moths, 45 

 white, generally dangerous and 



therefore eliminated, 48 

 why it exists so abundantly 



although often injurious, 50 

 influenced by need of protection, 



80 



of female birds, 80 

 in relation to nidification of birds, 



81 



gaudy colours of many cater- 

 pillars, 82 



in nature, general causes of, 88 

 sexual differences of, in birds, 123 

 in female birds, how connected 

 with their nidification, 124, 128 

 more variable than structure or 

 habits, and therefore more 

 easily modified, 130 



