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664

* natives of, of their extinction, 191; practice of tattooing in, 576; aversion of natives of, to hairs on the face, 581; pretty girls engrossed by the chiefs in, 595.
 * Newton, A., on the throat-pouch of the male bustard, 373; on the difference between the females of two species of Oxynotus, 470; on the habits of the Phalarope, dotterel, and godwit, 477.
 * Newts, 348.
 * Nicholson, Dr., on the non-immunity of dark Europeans from yellow fever, 195.
 * Nictitating membrane, 17, 161.
 * Nidification, of fishes, 344; relation of, to colour, 453, 456; of British birds, 454.
 * Night-heron, cries of the, 368.
 * Nightingale, arrival of the male before the female, 212; object of the song of the, 368.
 * Nightingales, new mates found by 408.
 * Nightjar, selection of a mate by the female, 416; Australian, sexes of 479; coloration of the, 491.
 * Nightjars, noise made by some male, with their wings, 376; elongated feathers in, 384, 403.
 * Nilghau, sexual differences of colour in the, 535.
 * Nilsson, Prof., on the resemblance of stone arrow-heads from various places, 179; on the development of the horns in the reindeer, 234.
 * Nipples, absence of, in Monotremata, 162.
 * Nitsche, Dr., ear of fœtal orang, 17.
 * Nitzsch, C. L., on the down of birds, 390.
 * Noctuæ, brightly-coloured beneath, 315.
 * Noctuidæ, coloration of, 313.
 * Nomadic habits, unfavourable to human progress, 133.
 * Nordmann, A., on Tetrao urogalloides, 405.
 * Norfolk island, half-breeds on, 190.
 * Norway, numerical proportion of male and female births in, 243.
 * Nose, resemblance of, in man and the apes, 153; piercing and ornamentation of the, 575; very flat, not admired in negroes, 582; flattening of the, 583.
 * Nott and Gliddon, on the features of Rameses II., 168; on the features of Amunoph III., 168; on skulls from Brazilian caves, 168; on the immunity of negroes and mulattoes from yellow fever, 193; on the deformation of the skull among American tribes, 583.
 * Novara, voyage of the, suicide in New Zealand, 117.
 * Nudibranch Mollusca, bright colours of, 264.
 * Numerals, Roman, 144; origin of, 264.
 * Nunemaya, natives of, bearded, 349, 560.
 * Nut-hatch of Japan, intelligence of, 410.


 * Obedience, value of, 130.
 * Observation, powers of, possessed by birds, 411.
 * Occupations, sometimes a cause of diminished stature, 31; effect of, upon the proportions of the body, 31.
 * Ocelli, absence of, in female Mutillidæ, 274.
 * of birds, formation and variability of the, 427.
 * Ocelot, sexual differences in the colouring of the, 534.
 * Ocyphaps lophotes, 402.
 * Odonata, 254.
 * Odonestis potatoria, sexual difference of colour in, 316.
 * Odour, correlation of, with colour of skin, 197; emitted by snakes in the breeding-season, 352; of mammals, 528.
 * Œcanthus nivalis, difference of colour in the sexes of, 289.
 * pellucidus, 289.
 * Ogle, Dr. W., relation between colour and power of smell, 18.
 * Oidemia, 491.
 * Olivier, on sounds produced by Pimelia striata, 306.
 * Omaloplia brunnea, stridulation of, 303.
 * Onitis furcifer, processes of anterior