ii. 341;

on the distinctive characters of the coiffure of central African tribes, ii. 342; on the coiffure of Arab women, ii. 353.

"BALZ" of the Black-cock, ii. 45, 100.

BANTAM, Sebright, i. 259, 294.

BANTENG, horns of, ii. 247; sexual differences in the colours of the, ii. 289.

BANYAI, colour of the, ii. 346.

BARBARISM, primitive, of civilised nations, i. 181.

BARBS, filamentous, of the feathers, in certain birds, ii. 74.

BARR, Mr., on sexual preference in dogs, ii. 272.

BARRINGTON, Daines, on the language of birds, i. 55; on the clucking of the hen, ii. 51; on the object of the song of birds, ii. 52; on the singing of female birds, ii. 54; on birds acquiring the songs of other birds, ii. 55; on the muscles of the larynx in song-birds, ii. 55; on the want of the power of song by female birds, ii. 163.

BARROW, on the widow-bird, ii. 98.

BARTLETT, A. D., on the tragopan, i. 270; on the development of the spurs in _Crossoptilon auritum_, i. 290; on the fighting of the males of _Plectropterus gambensis_, ii. 46; on the knot, ii. 82; on display in male birds, ii. 87; on the display of plumage by the male _Polyplectron_, ii. 89; on _Crossoptilon auritum_ and _Phasianus Wallichii_, ii. 93; on the habits of _Lophophorus_, ii. 121; on the colour of the mouth in _Buceros bicornis_, ii. 129; on the incubation of the cassowary, ii. 204; on the Cape Buffalo, ii. 250; on the use of the horns of antelopes, ii. 251; on the fighting of male wart-hogs, ii. 266; on _Ammotragus tragelaphus_, ii. 282; on the colours of _Cercopithecus cephus_, ii. 291; on the colours of the faces of monkeys, ii. 310; on the naked surfaces of monkeys, ii. 377.

BARTRAM, on the courtship of the male alligator, ii. 29.

BASQUE language, highly artificial, i. 61.

BATE, C. S., on the superior activity of male crustacea, i. 272; on the proportions of the sexes in crabs, i. 315; on the chelae of crustacea, i. 330; on the relative size of the sexes in crustacea, i. 332; on the colours of crustacea, i. 335.

BATES, H. W., on variation in the form of the head of Amazonian Indians, i. 111; on the proportion of the sexes among Amazonian butterflies, i. 309; on sexual differences in the wings of butterflies, i. 345; on the field-cricket, i. 353; on _Pyrodes pulcherrimus_, i. 367; on the horns of Lamellicorn beetles, i. 370, 371; on the colours of _Epicaliae_, &c., i. 388; on the coloration of tropical butterflies, i. 391; on the variability of _Papilio Sesostris_ and _Childrenae_, i. 402; on male and female butterflies inhabiting different stations,