374 
Basinornis, 196. 
Barzs, Mr., first adopted the word 
“ mimicry,” 75 ; his observations 
on Leptalis and Heliconide, 82; 
his paper explaining the theory 
of mimicry, 83; objections to 
his theory, 108; on variation, 
165; on recent immigration of 
Amazonian Indians, 214. 
Bayma, Mr., on “Molecular Me- 
chanics,” 363, 364. 
Beauty in nature, 282; not uni- 
versal, 284; of flowers useful to 
them, 285; not given for its own 
sake, 285, 
Binns, possible rapid increase of, 
29; numbers that die annually, 
30; mimicry among, 103; dull 
colour of females, 114; nidi- 
fication as affecting colour of 
females, 116; refusing the 
gooseberry caterpillar, 119; the 
highest in rank and organiza- 
tion, 137 ; dimorphism in, 155 ; 
why peculiar nest built by each . 
species, 215-219; build more per- 
fect nests as they grow older, 
224, 227; alter and improve 
their nests, 226; sexual differ- 
ences of colour in, 239. 
Bombus hortorum, 90. 
Bombycilla garrula, colours and 
nidification of, 255. 
Bomsyuivs, 98, 
Bray of the savage but slightly 
less than that of civilized man, 
336 ; size of, an important ele- 
ment of mental power, 335; of 
savage races larger than their 
needs require, 338, 343; of man 
INDEX. 
and of anthropoid apes com- 
pared, 338. 
Broca, Professor Paul, on the fine 
crania of the cave men, 337. 
Bryophila glandifera and B. perla 
protectively coloured, 63. 
Bucerotip#, sexual colouring and 
nidification of, 241. 
Bucconipa, sexual colouring and 
‘ nidification of, 241. 
Bourr-rre moth, resembles a broken 
stick, 62. 
Buiip1nes of various races do not 
change, 213. 
Bourrestip#, resembling bird’s 
dung, 57; similar colours in 
two sexes, 114, 
Burrerruizs, value of, in studying 
“natural selection,” 131; varie- 
ties of, in Sardinia and Isle of 
Man, 178. 
CACIA anthribsides, 94. 
Callizona acesta, protective colour- 
ing of, 59. 
Catornis, 239. 
Carrronipa, sexual colouring and 
nidification of, 241. 
Capnolymma stygium, 94. 
Caranipz, special protection 
among, 72; similar colouring 
of two sexes, 114. 
Cassin, resemble dew drops, 58. 
CaTERPILLARS, mimicking a poi- 
sonous snake, 99; gaudy co- 
lours of, 117; various modes of 
protection of, 118; gooseberry 
caterpillar, 119; Mr. Jenner 
Weir’s observations on, 119; 
Mr. A. G. Butler's observations 
on, 121, 
