662 



INDEX. 



changes of plumage of birds in 

 relation to, 456. 



Seasons, inheritance at corre- 

 sponding, 224. 



Sebituani, African chief, trying to 

 alter a fashion, 570. 



Sebright Bantam, 233. 



Secondary sexual characters, 203; 

 relations of polygamy to, 212; 

 transmitted through both sexes, 

 221; gradation of, Tn birds, 424. 



Sedgwick, W., on hereditary ten- 

 dency to produce twins, 44. 



Seemann, Dr., on the different ap- 

 preciation of music by different 

 peoples, 564; on the effects of 

 music, 566. 



Seidlitz, on horns of reindeer, B02. 



Selasphorus platycercus, acumin- 

 ate first primary of the male, 

 373. 



Selby, P. J., on the habits of the 

 black and red grouse, 215. 



Selection, double, 221. 



of male by female birds, 399, 



416. 



, methodical, of Prussian 



grenadiers, 28. 



, sexual, explanation of, 



205, 209, 216; influence of, on the 

 coloring of Lepidoptera, 317. 



, sexual and natural, con- 

 trasted, 221. 



Self-command, habit of, inherited, 

 112; estimation of, 115. 



Self-consciousness, in animals, 80. 



Self-preservation, instinct of, 108. 



Self-sacrifice, by savages, 109; es- 

 timation of 115. 



Semilunar fold, 17. 



Semnopithecus, 149; long hair on 

 the heads of species of, 146, 598. 



chrysomelas, sexual differ- 

 ences of color in, 533. 



comatus, ornamental hair 



on the head of, 544. 



frontatus, beard, &c., of, 



546. 



nasica, nose of, 146. 



nemseus, coloring of, 546. 



rubicundus, ornamental hair 



on the head of, 543. 



Senses, inferiority of Europeans 

 to savages in the, 32. 



Sentinels, among animals, 97, 104. 



Serpents, instinctively dreaded by 

 apes and monkeys, 65, 69. 



Serranus, hermaphroditism in, 

 157. 



Sex, inheritance limited by, 225. 



Sexes, relative proportions of, in 

 man, 237, 252; probable relation 

 of the, in primeval man, 5S5. 



Sexual characters, secondary, 203; 

 relations of polygamy to, 212; 

 transmitted through both sexes, 

 221; gradation of, in birds, 424. 



and natural selection, con- 

 trasted, 221. 



Sexual characters, effects of the 

 loss of, 226; limitation of, 226. 



• differences in man, 8. 



selection, explanation of, 



205, 209, 216; influence of, on the 

 coloring of Lepidoptera, 315; ob- 

 jections to, 490; action of, in 

 mankind, 589. 



■ similarity, 251. 



Shaler, Prof., sizes of sexes in 



whales, 511. 

 Sharks, prehensile organs of male, 



327. 



Sharpe, Dr., Europeans in the 

 tropics, 190. 



• , R. B., on Tanyslptera Syl- 

 via, 445; on Ceryle, 451; on the 

 young male of Dacelo Gaudich- 

 audi, 461. 



Shaw, Mr., on the pugnacity of 

 the male salmon, 328. 



, J., on the decorations of 



birds, 377. 



Sheep, danger-signals of, 97; sex- 

 ual differences in the horns of, 

 225; horns of, 229, 501; domestic, 

 sexual differences of, late de- 

 veloped, 232; numerical propor- 

 tion of the sexes in, 241; inheri- 

 tance of horns by one sex, 501; 

 effect of castration, 502; mode 

 of fighting of, 504; arched fore- 

 heads of some, 528. 



Merino, loss of horns in fe- 

 males of, 226; horns of, 230. 



Shells, difference in form of, in 

 male and female Gasteropoda, 

 259; beautiful colors and shapes 

 of, 260. 



Shield-drake, pairing with com- 

 mon duck, 409; New Zealand, 

 sexes and young of, 473. 



Shooter, J., on the Kafllrs, 574; on 

 the marriage customs of the 

 KafBrs, 593. 



Shrew mice, odor of, 524. 



Shrike, Drongo, 454. 



Shrikes, characters of young, 

 459. 



Shuekard, W. E., on sexual differ- 

 ences in the wings of Hymenop- 

 tera, 274. 



Shyness of adorned male birds, 

 397. 



Siagonium, proportions of the 

 sexes in, 249; dimorphism in 

 males of, 296. 



Slam, proportion of male and fe- 

 male births in, 239. 



Siamese, general beardlessness of 

 the, 555; notions of beauty of 

 the, 573; hairy family of, 596. 



Sidgwick, H., on morality in hy- 

 pothetical bee community, 96; 

 our actions not entirely directed 

 by pain and pleasure, 116. 



Siebold, C. T. von, on the pro- 

 portion of sexes in the Apus, 

 251; on the auditory apparatus 



