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; on dimorphism in Agrion; on the want of pugnacity in male dragon-flies; colour of ghost-moth in the Shetland Islands.

M'Lennan, Mr., on infanticide; on the origin of the belief in spiritual agencies; on the prevalence of licentiousness among savages; on the primitive barbarism of civilised nations; on traces of the custom of the forcible capture of wives; on polyandry.

Macnamara, Mr., susceptibility of Andaman islanders and Nepalese to change.

M'Neill, Mr., on the use of the antlers of deer; on the Scotch deerhound; on the long hairs on the throat of the stag; on the bellowing of stags.

Macropus, courtship of.

Macrorhinus proboscideus, structure of the nose of.

Magpie, power of speech of; vocal organs of the; nuptial assemblies of; new mates found by; stealing bright objects; young of the; coloration of the.

Maillard, M., on the proportion of the sexes in a species of Papilio from Bourbon.

Maine, Sir Henry, on the absorption of one tribe by another; a desire for improvement not general.

Major, Dr. C. Forsyth, on fossil Italian apes; skull of Bos etruscus; tusks of miocene pigs.

Makalolo, perforation of the upper lip by the.

Malar bone, abnormal division of, in man.

Malay, Archipelago, marriage-customs of the savages of the.

Malays, line of separation between the Papuans and the; general beardlessness of the; staining of the teeth among; aversion of some, to hairs on the face.

Malays and Papuans, contrasted characters of.

Male animals, struggles of, for the possession of the females; eagerness of, in courtship; generally more modified than female; differ in the same way from females and young.

Male characters, developed in females; transfer of, to female birds.

Male, sedentary, of a hymenopterous parasite.

Malefactors.

Males, presence of rudimentary female organs in.

Males and females, comparative numbers of; comparative mortality of, while young.

Charles Darwin

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