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attraction of male deer by the voice of the female.

King and Fitzroy, on the marriage-customs of the Fuegians.

King-crows, nidification of.

Kingfisher, racket-shaped feathers in the tail of a.

Kingfishers, colours and nidification of the; immature plumage of the; young of the.

King Lory, immature plumage of the.

Kingsley, C., on the sounds produced by the Umbrina.

Kirby and Spence, on sexual differences in the length of the snout in Curculionidae; on the courtship of insects; on the elytra of Dytiscus; on peculiarities in the legs of male insects; on the relative size of the sexes in insects; on the Fulgoridae; on the habits of the Termites; on difference of colour in the sexes of beetles; on the horns of the male lamellicorn beetles; on hornlike processes in male Curculionidae; on the pugnacity of the male stag-beetle.

Kite, killed by a game-cock.

Knot, retention of winter plumage by the.

Knox, R., on the semilunar fold; on the occurrence of the supra-condyloid foramen in the humerus of man; on the features of the young Memmon.

Koala, length of the caecum in.

Kobus ellipsiprymnus, proportion of the sexes in.

Kolreuter, on the sterility of hybrid plants.

Koodoo, development of the horns of the; markings of the.

Koppen, F.T., on the migratory locust.

Koraks, marriage customs of.

Kordofan, protuberances artificially produced by natives of.

Korte, on the proportion of sexes in locusts; Russian locusts.

Kovalevsky, A., on the affinity of the Ascidia to the Vertebrata.

Kovalevsky, W., on the pugnacity of the male capercailzie; on the pairing of the capercailzie.

Krause, on a convoluted body at the extremity of the tail in a Macacus and a cat.

Kupffer, Prof., on the affinity of the Ascidia to the Vertebrata.

Labidocera Darwinii, prehensile organs of the male.

Labrus, splendid colours of the species of.

Labrus mixtus, sexual differences in.

Labrus pavo.

Lacertilia, sexual differences of.

Lafresnaye, M. de, on birds of paradise.

Lamarck, on the origin of man.

Lamellibranchiata.

Lamellicorn beetles, horn-like processes from the head and thorax of; influence of sexual selection on.

Lamellicornia, stridulation of.

Lamont, Mr., on the tusks of the walrus; on the use of its tusks by the walrus; on the bladder-nose seal.

Lampornis porphyrurus, colours of the female.

Lampyridae, distasteful to mammals.

Lancelet.

Landois, H., gnats attracted by sound; on the production of sound by the Cicadae; on the stridulating organ of the crickets; on Decticus; on the stridulating organs of the Acridiidae; stridulating apparatus, in Orthoptera; on the stridulation of Necrophorus; on the stridulant organ of Cerambyx heros; on the stridulant organ of Geotrupes; on the stridulating organs in the Cleoptera; on the ticking of Anobium.

Landor, Dr., on remorse for not obeying tribal custom.

Language, an art; articulate, origin of; relation of the progress of, to the development of the brain; effects of inheritance in production of; complex structure of, among barbarous nations; natural selection in; gesture; primeval; of a lost tribe preserved by a parrot.

Languages, presence of rudiments in; classification of; variability of; crossing or blending of; complexity of, no test of perfection or proof of special creation; resemblance of, evidence of community of origin.

Languages and species, identity of evidence of their gradual development.

Lanius, characters of young.

Lanius rufus, anomalous young of.

Lankester, E.R., on comparative longevity; on the destructive effects of intemperance.

Lanugo of the human foetus.

Lapponian language, highly artificial.

Lark, proportion of the sexes in the; female, singing of the.

Larks, attracted by a mirror.

Lartet, E., comparison of cranial capacities of skulls of recent and tertiary mammals; on the size of the brain in mammals; on Dryopithecus; on pre-historic flutes.

Larus, seasonal change of plumage in.

Larva, luminous, of a Brazilian beetle.

Larynx, muscles of the, in songbirds.

Lasiocampa quercus, attraction of males by the female; sexual difference of colour in.

Latham, R.G., on the migrations of man.

Latooka, perforation of the lower lip by the women of.

Laurillard, on the abnormal division of the malar bone in man.

Lawrence, W., on the superiority of savages to Europeans in power of sight; on the colour of negro infants; on the fondness of savages for ornaments; on beardless races; on the beauty of the English aristocracy.

Layard, E.L., on the instance of rationality in a cobra; on the pugnacity of Gallus Stanleyi.

Laycock, Dr., on vital periodicity; theroid nature of idiots.

Leaves, autumn, tints useless.

Lecky, Mr., on the sense of duty; on suicide; on the practice of celibacy; his view of the crimes of savages; on the gradual rise of morality.

Leconte, J.L., on the stridulant organ in the Coprini and Dynastini.

Lee, H., on the numerical proportion of the sexes in the trout.

Leg, calf of the, artificially modified.

Legitimate and illegitimate children, proportion of the sexes in.

Legs, variation of the length of the, in man; proportions of, in soldiers and sailors; front, atrophied in some male butterflies; peculiarities of, in male insects.

Leguay, on the occurrence of the supra-condyloid foramen in the humerus of man.

Lek of the black-cock and capercailzie.

Lemoine, Albert, on the origin of language.

Lemur macaco, sexual difference of colour in.

Lemuridae, ears of the; variability of the muscles in the; position and derivation of the; their origin.

Lemurs, uterus in the.

Lenguas, disfigurement of the ears of the.

Leopards, black.

Lepidoptera, numerical proportions of the sexes in the; colouring of; ocellated spots of.

Lepidosiren.

Leptalides, mimicry of.

Leptorhynchus angustatus, pugnacity of male.

Leptura testacea, difference of colour in the sexes.

Leroy, on the wariness of young foxes in hunting-districts; on the desertion of their young by swallows.

Leslie, D., marriage customs of Kaffirs.

Lesse, valley of the.

Lesson, on the birds of paradise; on the sea-elephant.

Lessona, M., observations on Serranus.

Lethrus cephalotes, pugnacity of the males of.

Leuciscus phoxinus.

Leuckart, R., on the vesicula prostatica; on the influence of the age of parents on the sex of offspring.

Levator claviculae muscle.

Libellula depressa, colour of the male.

Libellulidae, relative size of the sexes of; difference in the sexes of.

Lice of domestic animals and man.

Licentiousness a check upon population; prevalence of, among savages.

Lichtenstein, on Chera progne.

Life, inheritance at corresponding periods of.

Light, effects on complexion; influence of, upon the colours of shells.

Lilford, Lord, the ruff attracted by bright objects.

Limosa lapponica.

Linaria.

Linaria montana.

Lindsay, Dr. W.L., diseases communicated from animals to man; madness in animals; the dog considers his master his God.

Linnaeus, views of, as to the position of man.

Linnet, numerical proportion of the sexes in the; crimson forehead and breast of the; courtship of the.

Lion, polygamous; mane of the, defensive; roaring of the.

Lions, stripes of young.

Lips, piercing of the, by savages.

Lithobius, prehensile appendages of the female.

Lithosia, coloration in.

Littorina littorea.

Livingstone, Dr., manner of sitting of gorilla; on the influence of dampness and dryness on the colour of the skin; on the liability of negroes to tropical fevers after residence in a cold climate; on the spur-winged goose; on weaverbirds; on an African night-jar; on the battle-scars of South African male mammals; on the removal of the upper incisors by the Batokas; on the perforation of the upper lip by the Makalolo; on the Banyai.

Livonia, numerical proportion of male and female births in.

Lizards, relative size of the sexes of; gular pouches of.

Lloyd, L., on the polygamy of the capercailzie and bustard; on the numerical proportion of the sexes in the capercailzie and blackcock; on the salmon; on the colours of the sea-scorpion; on the pugnacity of male grouse; on the capercailzie and blackcock; on the call of the capercailzie; on assemblages of grouse and snipes; on the pairing of a shield-drake with a common duck; on the battles of seals; on the elk.

Lobivanellus, wing-spurs in.

Local influences, effect of, upon stature.

Lockwood, Mr., on the development of Hippocampus.

Lockwood, Rev. S., musical mouse.

Locust, bright-coloured, rejected by lizards and birds.

Locust, migratory; selection by female.

Locustidae, stridulation of the; descent of the.

Locusts, proportion of sexes in; stridulation of.

Longicorn beetles, difference of the sexes of, in colour; stridulation of.

Lonsdale, Mr., on an example of personal attachment in Helix pomatia.

Lophobranchii, marsupial receptacles of the male.

Lophophorus, habits of.

Lophorina atra, sexual difference in coloration of.

Lophornis ornatus.

Lord, J.K., on Salmo lycaodon.

Lory, King; immature plumage of the.

Lory, king, constancy of.

Love-antics and dances of birds.

Lowne, B.T., on Musca vomitoria.

Loxia, characters of young of.

Lubbock, Sir J., on the antiquity of man; on the origin of man; on the mental capacity of savages; on the origin of implements; on the simplification of languages; on the absence of the idea of God among certain races of men; on the origin of the belief in spiritual agencies; on superstitions; on the sense of duty; on the practice of burying the old and sick among the Fijians; on the immorality of savages; on Mr. Wallace’s claim to the origination of the idea of natural selection; on the former barbarism of civilised nations; on improvements in the arts among savages; on resemblances of the mental characters in different races of men; on the arts practised by savages; on the power of counting in primeval man; on the prehensile organs of the male Labidocera Darwinii; on Chloeon; on Smynthurus luteus; finding of new mates by jays; on strife for women among the North American Indians; on music; on the ornamental practices of savages; on the estimation of the beard among the Anglo-Saxons; on artificial deformation of the skull; on “communal marriages;” on exogamy; on the Veddahs; on polyandry.

Lucanidae, variability of the mandibles in the male.

Lucanus, large size of males of.

Lucanus cervus, numerical proportion of sexes of; weapons of the male.

Lucanus elaphus, use of mandibles of; large jaws of male.

Lucas, Prosper, on pigeons; on sexual preference in horses and bulls.

Luminosity in insects.

Lunar periods.

Lund, Dr., on skulls found in Brazilian caves.

Lungs, enlargement of, in the Quichua and Aymara Indians; a modified swim-bladder; different capacity of, in races of man.

Luschka, Prof., on the termination of the coccyx.

Luxury, expectation of life uninfluenced by.

Lycaena, sexual differences of colour in species of.

Lycaenae, colours of.

Lyell, Sir C., on the antiquity of man; on the origin of man; on the parallelism of the development of species and languages; on the extinction of languages; on the Inquisition; on the fossil remains of vertebrata; on the fertility of mulattoes.

Lynx, Canadian throat-ruff of the.

Lyre-bird, assemblies of.

Macacus, ears of; convoluted body in the extremity of the tail of; variability of the tail in species of; whiskers of species of.

Macacus brunneus.

Macacus cynomolgus, superciliary ridge of; beard and whiskers of; becoming white with age.

Macacus ecaudatus.

Macacus lasiotus, facial spots of.

Macacus nemestrinus.

Macacus radiatus.

Macacus rhesus, sexual difference in the colour of.

Macalister, Prof., on variations of the palmaris accessorius muscle; on muscular abnormalities in man; on the greater variability of the muscles in men than in women.

Macaws, Mr. Buxton’s observations on.

McCann, J., on mental individuality.

McClelland, J., on the Indian Cyprinidae.

Macculloch, Col., on an Indian village without any female children.

Macculloch, Dr., on tertian ague in a dog.

Macgillivray, W., on the vocal organs of birds; on the Egyptian goose; on the habits of woodpeckers; on the habits of the snipe; on the whitethroat; on the moulting of the snipes; on the moulting of the Anatidae; on the finding of new mates by magpies; on the pairing of a blackbird and thrush; on pied ravens; on the guillemots; on the colours of the tits; on the immature plumage of birds.

Machetes, sexes and young of.

Machetes pugnax, supposed to be polygamous; numerical proportion of the sexes in; pugnacity of the male; double moult in.

McIntosh, Dr., colours of the Nemertians.

McKennan, marriage customs of Koraks.

Mackintosh, on the moral sense.

MacLachlan, R., on Apatania muliebris and Boreus hyemalis; on the anal appendages of male insects; on the pairing of dragon-flies; on dragon-flies;

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