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.
Charis melipona, 96. CHEMATOBIA, wintry colours of this genus, 62.
Chlamys pilula, resembles dung of caterpillars, 58.
CHRYSIDIDE, how protected, 72. CHRYSOMELIDE, 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. COCCINELLIDE, 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.
COTINGIDE, sexual colouring and nidification of, 244.
CRATOSOMUS, a hard weovil, 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. EUPLCEA, local modifications of co- lour in, 173.
Euploa midamus, 87-113, 179; E. rhadamanthus, 87, 179. Eurhinia megalonice, 172; poly- nice, 172.
EURYLAMIDE, 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 attack:d 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 leucose, 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.
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.
ITHOMIA, 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.
LANIADÆ, 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
of limited populations, 265; of heredity, 266; of variation, 266; of change of physical con- ditions, 266; of the equilibrium of nature, 266; as opposed to continual interference, 268. LAYCOCK, Dr., on law of "uncon-
scious intelligence," 360. LEAF BUTTERFLY, appearance and habits of, 59-61. LEPIDOPTERA, especially subject to variation, 132.
LEPTALIS, species of mimic Heli- conidæ, 82; gain a protection thereby, 259.
LESTER, Mr. J. M., on wood-dove
LEVAILLANT, on formation of a nest, 224.
Limenitis archippus, 88.
Limenitis limire, 172; procris, 172. LIZARDS refusing certain moths and caterpillars, 121; devour- ing bees, 121.
LOCAL FORMS, 158.
LOCAL variation of form, 169; of colour, 173; general remarks on, 174; in Celebesian butter- flies, probable use of, 175. LOCUSTIDE, adaptive colouring of, 64.
LUMINOUSNESS of some insects a protection, 71. LYCENIDE, probable means of pro- tection of, 176.
MAMMALS, mimicry among, 107. MAN, does he build by reason or imitation, 212; his works mainly imitative, 225; antiquity of, 303, 322; difference of opinion as to
his origin, 304; unity or plural- ity of species, 305; persistence of type of, 306; importance of mental and moral characters, 312; his dignity and supremacy, 324; his influence on nature, 326; his future development, 326; range of intellectual power in, 339; rudiments of all the higher faculties in savage, 341; his feet and hands, difficulties on the theory of natural selec- tion, 349: his voice, 350; his mental faculties, 351; difficulty as to the origin of the moral sense in, 352; development of, probably directed by a superior intelligence, 359.
MANTIDE, adaptive colouring of, 64; mimicking white ants, 98. MALACODERMS, a protected group, 93.
MATTER, the nature of, 363; Mr. Bayma on, 363; is force, 365. MECHANITIS and Methona, mi- micked by Leptalis, 83. MECOCERUS, dimorphism of, 155. Mecocerus gazella, 94. MEGACEPHALON, 196.
MEGAPODIDÆ, sexual colouring and nidification of, 246.
MEROPOGON, 196. Midas dives, 97.
MIMETA, mimicking Tropidorhyn- chus, 104.
MIMICRY, meaning of the word, 74; theory of, 76; among Lepi- doptera, 77; how it acts as a protection, 80, 81; of other in- sects by Lepidoptera, 89; among
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