806 



INDEX 



mouth in Buceros bicomis, 549; on 

 the incubation of the cassowary, 616; 

 on the Cape Buffalo, 651 ; on the use 

 of the horns of antelopes, 657 ; on 

 the fighting of male wart-hogs, 6tl ; 

 on Ammotragus tragelaphus, 686 ; on 

 the colors of Cercopithecus cephus, 

 694; on the colors of the faces of 

 , monkeys, 111; oa the naked sur- 

 faces of monkeys, 772. 



Bartram, on the courtship of the male 

 alligator, 456. 



Basque language, highly artificial, 127. 



Bate, C. S., on the superior activity of 

 male Crustacea, 292 ; on the propor- 

 tions of the sexes in crabs, 338 ; on 

 the chelae of Crustacea, 352; on the 

 relative size of the sexes in Crustacea, 

 355; on the colors of Crustacea, 357. 



Bateman, Dr. , tendency to imitation in 

 certain diseased states, 1 04; on Apha- 

 sia, 124. 



Bates, H. W., on variation in the form 

 of the head of Amazonian Indians, 

 49; on the proportion of the sexes 

 among Amazonian butterflies, 330 ; 

 on sexual difierences in the wings of 

 butterflies, 365 ; on the field-cricket, 

 372; on Pyrodes pulcherrimus, 386; 

 on the horns of Lamellicorn beetles, 

 887-389 ; on the colors of Epiealiae, 

 etc. , 403 ; on the coloration of tropi- 

 cal butterflies, 406 ; on the variability 

 of Papilio sesostris and childrense, 

 417 ; on male and female butterflies 

 inhabiting different stations, 418 ; on 

 mimicry, 422 ; on the caterpillar of a 

 Sphinx, 424 ; on the vocal organs of 

 the umbrella-bird, 485; on the tou- 

 cans, 635; on Brachyurus calvus, 

 711. 



Batokas, knocking out two upper in- 

 cisors, 740. 



Batrachia, 453 ; eagerness of male, 292. 



Bats, scent-glands, 683; sexual differ- 

 ences in the color of, 690; fur of 

 male frugivorous, 690. 



Battle, law of, 194; among beetles, 392 ; 

 among birds, 468 ; among mammals, 

 646 et seq. ; in man, 723. 



Beak, sexual difference in the forms of 

 the, 467 ; in the color of the, 496. 



Beaks of birds, bright colors of, 634. 



Beard, development of, in man, 717; 

 analogy of the, in man and the quad- 

 nuuana, 718; variation of the de- 



velopment of the. In different races 

 of men, 719; estimation of, among 

 bearded nations, 748; probable ori- 

 gin of the, 775. 



Beard, in monkeys, 202; of mammals, 

 686. 



Beautiful, taste for the, in birds, 530; 

 in the quadrumana, 698. 



Beauty, sense of, in animals, 128; ap- 

 preciation of, by birds, 533 ; influence 

 of, 738, 741 ; variability of the stand- 

 ard of, 767. 



Beavan, Lieut., on the development of 

 the horns in Cervus Eldi, 308. 



Beaver, instinct and intelligence of the, 

 97-98 ; voice of the, 681 ; castoreum 

 of the, 683. 



Beavers, battles of male, 646. 



Beohstein, on female birds choosing the 

 best singers among the males, 478; 

 on rivalry in song birds, 479; on the 

 singing of female birds, 480 ; on birds 

 acquiring the songs of other birds, 

 481 ; on pairing the canary and sis- 

 kin, 536; on a sub-variety of the 

 monk pigeon, 552 ; on spurred hens, 

 579. 



Beddoe, Dr., on causes of difference in 

 stature, 53. 



Bee-eater, harsh cry of, 482. 



Bees, 137 ; pollen-baskets and stings 

 of, 91; destruction of drones and 

 queens by, 145 ; female, secondary 

 sexual characters of, 275; proportion 

 of sexes, 336; difference of the sexes 

 in color and sexual selection, 383-384. 



Beetle, luminous larva of a, 365. 



Beetles, 385 ; size of the cerebral gan- 

 glia in, 80; dilatation of the fore 

 tarsi in male, 363; blind, 385-386; 

 stridulation of, 394. 



Belgium, ancient inhabitants of, 242. 



Bell, Sir C, on emotional muscles in 

 man, 20; "snarling muscles," 64; 

 on the hand, 77. 



BeU, T., on the numerical proportion 

 of the sexes in moles, 325; on the 

 newts, 453; on the croaking of the 

 frog, 455 ; on the difference In 

 the coloration of the sexes in Zoo- 

 toca vivipara, 464; on moles fight- 

 ing, 646. 



Bell-bird, sexual difference in the color 

 of the, 501. 



Bell-birds, colors of, 635. 



Belt, Mr.; on the nEtkedness of tropicd 



