BASILORNIS, 196. BATES, Mr., first adopted the word mimicry," 75; his observations on Leptalis and Heliconidæ, 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.
BIRDS, 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. BOMBYLIUS, 98.
BRAIN 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
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. BUCEROTIDÆ, sexual colouring and nidification of, 241. BUCCONIDÆ, sexual colouring and nidification of, 241.
BUFF-TIP moth, resembles a broken stick, 62.
BUILDINGS of various races do not change, 213.
BUPRESTIDE, resembling bird's dung, 57; similar colours in two sexes, 114. BUTTERFLIES, value of, in studying "natural selection," 131; varie- ties of, in Sardinia and Isle of Man, 178.
CACIA anthribɔides, 94. Callizona acesta, protective colour- ing of, 59. CALORNIS, 239.
CAPITONIDÆ, sexual colouring and nidification of, 241. Capnolymma stygium, 94. CARABIDÆ, special protection among, 72; similar colouring of two sexes, 114. CASSIDE, 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.
CELEBES, 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. Cephalodonta spinipes, 92. Ceroxylus laceratus, imitates a moss-covered stick, 64. CERTHIOLA, sexual colouring and nidification of, 244. Cethosia æole, 172; biblis, 172. CETONIADE, how protected, 73; similar colours of two sexes, 114.
CEYCOPSIS, 196. Charis melipona, 96. CHEMATOBIA, wintry colours of this genus, 62.
Chlamys pilula, resembles dung of caterpillars, 58.
CHRYSIDIDÆ, how protected, 72. CHRYSOMELIDÆ, similar colouring of two sexes, 114. CICINDELA, adaptive colour of va- rious species of, 57. Cilix compressa, resembles bird's dung, 63.
CLADOBATES, mimicking squirrels, 107.
CLASSIFICATION, form of true, 6;
circular, inadmissible, 8; quina- rian and circular, of Swainson, 46; argument from, against Mr. Darwin, 295.
CLIMACTERIS, sexual colouring and
nidification of, 243. COCCINELLIDÆ, how protected, 72;
similar colouring of sexes, 114. COEXISTING Varieties, 159. Collyrodes lacordairei, 95.
COLOUR, 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. COMPSOGNATHUS, 300. Condylodera tricondyloides, 97. CONSCIOUSNESS, origin of, 360;
Professor Tyndall on, 361; not a product of complex organiza- tion, 365.
CORRELATION of growth, 310. Corynomalus sp., 92.
COTINGIDÆ, sexual colouring and nidification of, 244.
CRATOSOMUS, a hard weevil, 94.
CRICKETS mimicking sand wasps, 98.
CRYPTODONTIA, 299. Cucullia verbasci, 120. CURCULIONIDE, often protected by hard covering, 71; similar co- lours of two sexes, 114. Cuviera squamata, 258. Cyclopeplus batesii, 92. CYNOPITHECUS, 196. Cynthia arsinoë, 172.
DANAIDÆ, the subjects of mimi- cry, 85, 86.
Danais erippus, 88; chrysippus, 112; sobrina, 179; aglaia, 179; tytia, 180.
DARWIN, Mr., his principle of uti- lity, 47; on cause of colour in flowers, 127, 262; on colours of caterpillars, 118; on sexual co- louration, 260; his metaphors liable to misconception, 269; criticism of, in North British Review, 291.
DESERT animals, colours of, 49, 50. DIADEMA, species of, mimic Danai- dæ, 86, 87: female with male colouration, 112. Diadema misippus, 112; D. ano- mala, 113.
Diaphora mendica, 89. DICNYODONTIA, 299. DICROURUS, 253.
Diloba cæruleocephala, 120. DIMORPHISM, 145; in beetles, 155; in birds, 155; illustrated, 157. DINOSAURIA, 298.
DIPTERA mimicking wasps and bees, 97.
Doliops curculionides, 94.
DOMESTICATED animals, their essen- tial difference from wild ones, 38-41.
DRUSILLA, mimicked by three ge- nera, 181.
Drusilla bioculata, 180. DYTISCUS, dimorphism in, 155.
EGYPTIAN architecture, intro- duced, 225.
Elaps fulvius, E. corallinus, E. lem- niscatus, 101; E. mipartitus, E. lemniscatus, E. hemiprichii, 102. ENODES, 196.
ENNOMUS, autumnal colours of this genus, 62.
Eos fuscata, dimorphism of, 155. EQUUS, 299.
Eronia tritea, 172; valeria, 172. Eroschema poweri, 93.
ERYCINIDE mimic Heliconidæ, 84. Erythroplatis corallifer, 92. ESTRELDA, sexual colouring and nidification of, 243.
EUCNEMIDE, mimicking a Malaco- derm, 93.
Eudromias morinellus, 251. Euglossa dimidiata, 98. EUMORPHIDE, a protected group, 72; imitated by Longicorns, 92. EUPLOA, local modifications of co- lour in, 173.
Euploa midamus, 87-113, 179; E. rhadamanthus, 87, 179. Eurhinia megalonice, 172; poly- nice, 172.
EURYLÆMIDÆ, sexual colouring and nidification of, 243.
EXTINCT animals, intermediate forms of, 298.
EXTINCTION of lower races, 318.
FEMALE birds, colours of, 114; sometimes connected with their mode of nidification, 240; more exposed to enemies than the males, 248.
FEMALE, butterflies generally dull- coloured, 259.
FEMALE insects, mimicry by, 110, 259; colours of, 113. FEMALE sex, has no incapacity for
as brilliant colouration as the male, 247; in some groups re- quires more protection than the male, 258.
FISHES, protective colouring of, 55. FISSIROSTRAL birds, nests of, 238. FLOWERS, causes of colour in, 127. FLYCATCHERS, genera of, absent from Celebes, 177.
FORBES, EDWARD, objections to his theory of Polarity, 17-23. FORCE is probably all Will-force, 366.
GALAPAGOS, 10.
GALTON, Mr., on range of intellec- tual power, 339. GANOCEPHALA, 298. Gastropacha querci, protective co-
lour and form of, 62. GAUDRY, M., on fossil mammals of Greece, 299. GEOGRAPHICAL distribution, de- pendent on geologic changes, 1; its agreement with law of in- troduction of new species, 9; of allied species and groups, 12. GEOLOGICAL distribution analogous to geographical, 13.
GEOLOGY, facts proved by, 2-5. GIRAFFE, how it acquired its long neck, 42.
GLEA, autumnal colours of this genus, 62.
GOULD, Mr., on sexual plumage of Gray Phalarope, 115; on incu- bation by male Dotterell, 115. Grallina australis, 254.
GREEN birds almost confined to the tropics, 52. Gymnocerus cratosomoides, 94. Gymnocerous capucinus, 96. Gymnocerous dulcissimus, 97. GUNTHER, Dr., on arboreal snakes, 55; on colouring of snakes, 102. Gynecia dirce, 59.
HABITS, often persistent when use of them has ceased, 234; of children and savages analogous to those of animals, 235; if persistent and imitative may be termed hereditary, 235, 236. HAIRY Covering of Mammalia, use of, 344; absence of, in man re- markable, 345; the want of it felt by savages, 346; could not have been abolished by natural selection, 348.
Harpagus diodon, 107. HEILIPLUS, a hard genus of Cur- culionidæ, 94.
HELICONIDE, the objects of mimi- cry, 77; their secretions, 88; not attacked by birds, 79; some- times mimicked by other Heli- conidæ, 85.
HELLADOTHERIUM, 300. HEMIPTERA, protected by bad odour, 72.
HERBERT, Rev. W., on song of birds, 221.
HESPERIDE, probable means of protection of, 176.
HESTHESIS, longicorns resembling ants, 96.
Hestia leuconoi, 180. HEWITSON, Mr., 131. HIPPARION, 299, HIPPOTHERIUM, 299.
HISPIDE, imitated by Longicorns, 92.
HOLOTHURIDE, 258.
Homalocranium semicinctum, 101. HOOKER, Dr., on the value of the
"specific term," 165. HOUSES of American and Malay races contrasted, 213. HUXLEY, Professor, on "Physical Basis of Life," 362, on volition, 368.
HYBERNIA, wintry colours of this genus, 62, HYMENOPTERA, large number of, peculiar to Celebes, 196.
ICTERIDÆ, sexual colouring and nidification of, 244. ICTHYOPTERYGIA, 298. Ideopsis daos, 180.
IMITATION, the effects of, in man's works, 212,
INDIANS, how they travel through
trackless forests, 207. INSECTS, protective colouring of, 56: mimicking species of other orders, 97; senses of, perhaps different from ours, 202, 203. INSTINCT, how it may be best stu-
died, 201; definition of, 203;
in many cases assumed without proof, 205; if possessed by man, 206; supposed, of Indians, 207; supposed to be shown in the construction of birds' nests, 211. INTELLECT of savages compared with that of animals, 341. INTELLECTUAL power, range of, in man, 339.
Iphias glaucippe, 172.
ITHOмIA, mimicked by Leptalis, 83. Ithomia ilerdina, mimicked by four groups of Lepidoptera, 84.
JAVA, relations of, to Sumatra and Borneo, 193.
JAMAICA Swift altering position of nest, 228.
JERDON, Mr., on incubation by males in Turnix, 115.
KALLIMA inachis and Kallima paralekta, wonderful resem- blance of, to leaves, 59-61.
LAKES as cases of imperfect adapt- ation, 278.
LANIADE, sexual colouring and ni- dification of, 245. LAMARCK'S hypothesis very dif- ferent from the author's, 41. Larentia tripunctaria, 63, LAW which has regulated the in- troduction of new species, 5; confirmed by geographical dis- tribution, 9; high organization of ancient animals consistent with, 14; of multiplication in geometrical progression, 265
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