&4Q 



EAGLES. 



INDEX. 



ENJLEHEART. 



Eagles, golden, new mates found by, 

 408. 



Ear, motion of the, 13; external 

 shell of the, useless in man, 14 ; 

 rudimentary point of the, in man, 15. 



Ears, more variable in men than 

 women, 224; piercing and orna- 

 mentation of the, 575. 



Earwigs, parental feeling in, 106. 



Echidna, 156. 



Echini, bright colours of some, 260. 



Echinodermata, absence of secondary 

 sexual characters in, 260. 



Echis carinata, 353. 



Ecker, figure of the human embryo, 

 10 ; on the development of the 

 gyri and sulci of the brain, 204 ; 

 on the sexual differences in the 

 pelvis in man, 557 ; on the pre- 

 sence of a sagittal crest in Austra- 

 lians, 558. 



Edentata, former wide range of, in 

 America, 169 ; absence of secondary 

 sexual characters in, 218. 



Edolius, racket-shaped feathers in, 

 384. 



Edwards. Mr., on the proportion of 

 the sexes in North American species 

 of Papilio, 250. 



Eels, hermaphroditism of, 162. 



Egerton, Sir P., on the use of the 

 antlers of deer, 510 ; on the pairing 

 of red deer, 522 ; on the bellowing 

 of stags, 526. 



Eggs, hatched by male fishes, 345. 



Egret, Indian, sexes and young of, 486. 



Egrets, breeding plumage of, 391 ; 

 white, 492. 



Ehrenberg, on the mane of the male 

 Hamadryas baboon, 521. 



Ekstrom, M., on Harelda glacialis, 

 420. 



Elachista rufocinerca, habits of male, 

 252. 



Eland, development of the horns of 

 the, 234. 



Elands, sexual differences of colour in 

 535 



Elaphomyia, sexual differences in, 280. 



Elaphrus uliginosus, stridulation of, 

 302. 



Elaps, 353. 



Elaterida;, proportions if the sexes in, 

 253. 



Elaters, luminous, 278. 



Elephant, 156 ; rate of increase of 

 the, 47 ; nakedness of the, 57 ; In- 

 dian, forbearance to his keeper, 

 104 ; polygamous habits of the, 

 218 ; pugnacity of the male, 501 ; 

 tusks of, 502, 503, 507, 515; 

 Indian, mode of fighting of the, 

 513; male, odour emitted by the, 

 529 ; attacking white or grey 

 horses, 540. 



Elevation of abode, modifying in- 

 fluence of, 35. 



Elimination of inferior individuals, 

 137. 



Elk, 507; winter change of the, 542. 



, Irish, horns of the, 515. 



El lice Islands, beards of the natives, 

 560, 581. 



Elliot, R., on the numerical pro- 

 portion of the sexes in young rats, 

 247 ; on the proportion of the 

 sexes in sheep, 246. 



, D. G., on Pclecanus erythro- 



rhynchus, 390. 

 -, Sir W., on the polygamous 



habits of the Indian wild boar, 



218. 

 Ellis, on the prevalence of infanticide 



in Polynesia, 592. 

 Elphinstone, Mr., on local differences 



of stature among the Hindoos, 31 , 



on the difficulty of distinguishing 



the native races of India, 167. 

 Elytra, of the females of Dytiscus, 



Acilius, Hydroporus, 276. 

 Emberiza, characters of young, 464. 



miliaria, 464. 



schceniclus, 41 2 ; head-feathers 



of the male, 402. 

 Embryo of man, 9, 10 ; of the dog, 10. 

 Embryos of mammals, resemblance of 



the, 25. 

 Emigration, 137. 

 Emotions experienced by the lower 



animals in common with man, 69 ; 



manifested by animals, 71. 

 Emperor moth, 315. 

 Emulation of singing-birds, 369. 

 Emu, sexes and incubation of, 478. 

 Endurance, estimation of, 118. 

 Energy, a characteristic of men, 565 

 England, numerical proportion of 



male and female births in, 242. 

 Engleheart, Mr., on the finding of 



new mates by starlings, 408. 



