INDEX. 
Cxrtezses, local modifications of 
form in, 170; probable cause of 
these, 176; remarkable zoolo- 
gical peculiarities of, 195-199. 
Centropus, sexual colouring and 
nidification of, 242. 
Cephalodonia spinipes, 92. 
Ceroxylus laceratus, imitates a 
moss-covered stick, 64. 
Crrruiona, sexual colouring and 
nidification of, 244. 
Cethosia @ole, 172; biblis, 172. 
Crrontap#, how protected, 73; 
similar colours of two sexes, 
114. 
Cuycopsis, 196. 
Charis melipona, 96. 
Cuemarosia, wintry colours of this 
genus, 62. 
Chlamys pilula, resembles dung of 
caterpillars, 58. 
Curysipips, how protected, 72. 
CurysomeLips, similar colouring 
of two sexes, 114. 
CicinpeLa, adaptive colour of va- 
rious species of, 57. 
Cilix compressa, resembles bird’s 
dung, 63. 
Cuapozartes, mimicking squirrels, 
107. 
Cuassirication, form of true, 6; 
circular, inadmissible, 8; quina- 
rian and circular, of Swainson, 
46; argument from, against 
Mr. Darwin, 295. 
Cumacreris, sexual colouring and 
nidification of, 243. 
CoccineLiip2, how protected, 72; 
similar colouring of sexes, 114. 
Corxistine varieties, 159. 
Collyrodes lucordairet, 95. 
375 
Coxour, in animals, popular theo- 
ries of, 47; frequent variations 
of, in domesticated animals, 48; 
influenced by need of conceal- 
ment, 49; in deserts, 49, 50; 
in Arctic regions, 50, 51; noc- 
turnal, 51; tropical, 52; special 
modifications of, 52; different 
distribution of, in butterflies 
and moths, 58; of autumnal 
and winter moths, 62; white, 
generally dangerous and there- 
fore eliminated, 66; why it 
exists so abundantly although 
often injurious, 69; influenced 
by need of protection, 113; of 
female birds, 114; in relation to 
nidification of birds, 116; gaudy 
colours of many caterpillars, 
117; in nature, general causes 
of, 126; local variations of, 
173; sexual differences of, in 
birds, 239; in female birds, how 
connected with their nidifica- 
tion, 240, 246; more variable 
than structure or habits, and 
therefore more easily modified, 
249; of flowers, as explained by 
Mr. Darwin, 262; often corre- 
lated with disease, 316. 
Compsoenatuvs, 300. 
Condylodera tricondyloides, 97. 
Consciousness, origin of, 360; 
Professor Tyndall on, 361; not 
@ product of complex organiza- 
tion, 365. 
Correrxation of growth, 310. 
Corynomalus sp., 92. 
Cotrners, sexual colouring and 
nidification of, 244. 
Cratosomus, a hard weovil, 94. 
