Bustards, occurrence of sexual differences and of polygamy among the; love-gestures of the male; double moult in.

Butler, A.G., on sexual differences in the wings of Aricoris epitus; courtship of butterflies; on the colouring of the sexes in species of Thecla; on the resemblance of Iphias glaucippe to a leaf; on the rejection of certain moths and caterpillars by lizards and frogs.

Butterfly, noise produced by a; Emperor; meadow brown, instability of the ocellated spots of.

Butterflies, proportion of the sexes in; forelegs atrophied in some males; sexual difference in the neuration of the wings of; pugnacity of male; protective resemblances of the lower surface of; display of the wings by; white, alighting upon bits of paper; attracted by a dead specimen of the same species; courtship of; male and female, inhabiting different stations.

Buxton, C., observations on macaws; on an instance of benevolence in a parrot.

Buzzard, Indian honey-; variation in the crest of.

Cabbage butterflies.

Cachalot, large head of the male.

Cadences, musical, perception of, by animals.

Caecum, large, in the early progenitors of man.

Cairina moschata, pugnacity of the male.

Californian Indians, decrease of.

Callianassa, chelae of, figured.

Callidryas, colours of sexes.

Callionymus lyra, characters of the male.

Callorhinus ursinus, relative size of the sexes of; courtship of.

Calotes maria.

Calotes nigrilabris, sexual difference in the colour of.

Cambridge, O. Pickard, on the sexes of spiders; on the size of male Nephila.

Camel, canine teeth of male.

Campbell, J., on the Indian elephant; on the proportion of male and female births in the harems of Siam.

Campylopterus hemileucurus.

Canaries distinguishing persons.

Canary, polygamy of the; change of plumage in, after moulting; female, selecting the best singing male; sterile hybrid, singing of a; female, singing of the; selecting a greenfinch; and siskin, pairing of.

Cancer pagurus.

Canestrini, G., on rudimentary characters and the origin of man; on rudimentary characters; on the movement of the ear in man; of the variability of the vermiform appendage in man; on the abnormal division of the malar bone in man; on abnormal conditions of the human uterus; on the persistence of the frontal suture in man; on the proportion of the sexes in silk-moths; secondary sexual characters of spiders.

Canfield, Dr., on the horns of the Antilocapra.

Canine teeth in man, diminution of, in man; diminution of, in horses; disappearance of, in male ruminants; large in the early progenitors of man.

Canines, and horns, inverse development of.

Canoes, use of.

Cantharis, difference of colour in the sexes of a species of.

Cantharus lineatus.

Capercailzie, polygamous; proportion of the sexes in the; pugnacity of the male; pairing of the; autumn meetings of the; call of the; duration of the courtship of; behaviour of the female; inconvenience of black colour to the female; sexual difference in the coloration of the; crimson eye-cere of the male.

Capitonidae, colours and nidification of the.

Capra aegagrus, crest of the male; sexual difference in the colour of.

Capreolus Sibiricus subecaudatus.

Caprice, common to man and animals.

Caprimulgus, noise made by the males of some species of, with their wings.

Caprimulgus virginianus, pairing of.

Carabidae.

Carbonnier, on the natural history of the pike; on the relative size of the sexes in fishes; courtship of Chinese Macropus.

Carcineutes, sexual difference of colour in.

Carcinus moenas.

Cardinalis virginianus.

Carduelis elegans, sexual differences of the beak in.

Carnivora, marine, polygamous habits of; sexual differences in the colours of.

Carp, numerical proportion of the sexes in the.

Carr, R., on the peewit.

Carrier pigeon, late development of the wattle in the.

Carrion beetles, stridulation of.

Carrion-hawk, bright coloured female of.

Carus, Prof. V., on the development of the horns in merino sheep; on antlers of red deer.

Charles Darwin

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