INDEX 
479 
Casside, 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, 885 
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 
Cetoniadx, 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 
Chrysidide, how protected, 52 
Chrysobactron Rossii, 408 
Chrysomelide, similar colouring of 
two sexes, 80 
Cicindela, adaptive colour of various 
species of, 42 
Cilix .compressa, 
dung, 46 
Cladobates, mimicking squirrels, 76 
Claparéde, M., criticism on Mr. 
Wallace’s views as to origin of man, 
205 (note) 
Clark, Rev. Hamlet, on leaf-cutting 
ants, 282 
resembles bird’s 
Classification, form of true, 6 
circular, inadmissible, 7 
quinarian and circular, of Swain- 
son, 84 
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 
Coccinellide, 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, 87, 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 
