820 



INDEX 



Duncan, Dr., on the fertility of early 



marriages, 186; comparative healtti 



of married and single, 189. 

 Dupont, M.., on the occarrence of the 



supra-condyloid foramen ia the hu- 

 merus of man, 41. 

 Durand, J. P., on causes of variation, 



51. 

 Dureau de la Malle, on the songs of 



birds, 121 ; on the acquisition of an 



air by blackbirds, 481. 

 Dutch, retention of their color by the, 



in South Africa, 256. 

 Duty, sense of, 134. 

 Duvaucel, female Hylobates washing 



her youQg, 100-101. 

 Dyaks, pride of, in mere homicide, 159. 

 Dynastes, large size of males of, 367. 

 Dynastini, stridulation of, 397. 

 Dytisous, dimorphism of females of, 



364; grooved elytra of the female, 



364. 



E 



Eagle, young Cercopithecus rescued 

 from, by the troop, 139-140. 



, white-headed, breeding in imma- 

 ture plumage, 625. 



Eagles, golden, new mates found by, 

 527. 



Ear, motion of the, 31; external shell 

 of the, useless in man, 32 ; rudi- 

 mentary point of the, in man, 33. 



Ears, more variable in men than 

 women, 295; piercing and orna- 

 mentation of the, 740-741. 



Earwigs, parental feeling in, 145. 



Echidna, 209. 



Echini, bright colors of some, 345. 



Echinodermata, absence of secondary 

 sexual characters in, 344. 



Echis carinata, 459. 



Eeker, figure of the human embryo, 

 27 ; on the development of the gyri 

 and sulci of the brain, 270; on the 

 sexual differences in the pelvis in 

 man, 717; on the presence of a sa- 

 gitt^ crest in Australians, 719. 



Edentata, former wide range of, in 

 America, 226; absence of second- 

 ary sexual characters in, 288. 



Edolius, racket-shaped feathers in the, 

 497. 



Edwards, Mr., on the proportion of the 



sexes in North American spedes of 

 Fapilio, 330. 



Eels, hermaphroditism of, 216. 



Egerton, Sir P., on the use of the ant- 

 lers of deer, 669; on the pairing of 

 red deer, 647; on the bellowing 

 of stags, 679. 



Eggs, batched by male fishes, 540. 



Egret, Indian, sexes and young of the, 

 627. 



Egi'ets, breeding plumage of, 631; 

 white, 636. 



Ehrenbeig, on the mane of the male 

 Hamadryas baboon, 673. 



Ekstrom, M., on Earelda glacialis, 643. 



Elachista rufocinerea, habits of male, 

 332. 



Eland, development of the horns of 

 the, 309. 



Elands, sexual differences of color in, 

 692. 



Elaphomyia, sexual differences in, 368- 

 369. 



ElaphruB uligmosus, stridulation of, 

 396. 



Elaps, 459. 



Elateridse, proportions of the sexes in, 

 335. 



Elaters, luminous, 366. 



Elephant, 209 ; rate of increase of the, 

 71; nakedness of the, 83; Indian, 

 forbearance to his keeper, 142; po- 

 lygamous habits of the, 288; pug- 

 nacity of the male, 647 ; tusks ot, 

 648, 649, 656, 656, 664; Indian, mode 

 of fighting of the, 663; male, odor 

 emitted by the, 683 ; attacking white 

 or gray horses, 698. 



Elevation of abode, modifying influenos 

 of, 57. 



Elimination of inferior individuals, 185. 



Elk, 656 ; winter change of the, 700. 



, Irish, horns of the, 665. 



EUice Islands, beards of the natives, 

 721-722, 748. 



Elliot, E., on the numerical proportion 

 of the sexes in young rats, 326 ; on 

 the proportion of the sexes in sheep, 

 324. 



, D. Gt., on Pelecanus erythro- 



rhynchuB, 603. 



, Sir W., on the polygamous habits 



of the Indian wild boar, 288. 



EUis, on the prevalence of infanticide 

 in Polynesia, 761. 



