576 



SEMN0P1THECUS. 



INDEX. 



S1TANA. 



Semnopithecus nasica, nose of, 150. 



nemceus, colouring of, 551. 



rulncundus, ornamental hair ou 



the head of, 548. 



Senses, inferiority of Europeans tc 

 savages in the, 33. 



Sentinels, among animals, 100, 107. 



Serpents, instinctively dreaded by 

 apes and monkeys, 67, 71. 



Serranus, hermaphroditism in, 161. 



Sex, inheritance limited by, 230. 



Sexes, relative proportions of, in man, 

 242, 558 ; probable relation of the, 

 in primeval man, 591. 



Sexual characters, secondary, 207 ; 

 relations of polygamy to, 217 ; 

 transmitted through both sexes, 

 226 ; gradation of, in birds, 430. 



and natural selection, con- 

 trasted, 226. 



characters, effects of the loss of 



231 ; limitation of, 231. 



— differences in man, 8. 



— selection, explanation of, 209, 

 213, 220 ; influence of, on the 

 colouring of Lepidoptera, 319 ; ob- 

 jections to, 495 ; action of, in man- 

 kind, 595. 



similarity, 255. 



Shaler, Prof., sizes of sexes in whales, 



516. 

 Sharks, prehensile organs of male, 



331. 

 Sharpe, Dr., Europeans in the tropics, 



195. 

 , R. B., on Tanysiptera sylvia, 



451 ; on Ceryle, 457 ; on the young 



male of Dacelo Gaudichaudi, 467. 

 Shaw, Mr., on the pugnacity of the 



male salmon, 332. 

 , J., on the decorations of birds, 



382. 

 Sheep, danger-signals of, 100 ; sexual 



differences in the horns of, 230 ; 



horns of, 235, 505 ; domestic, sexual 



differences of, late developed, 237 ; 



numerical proportion of the sexes 



in, 246 ; inheritance of horns by 



one sex, 505 ; effect of castration, 



506 ; mode of fighting of, 508 ; 



arched foreheads of some, 532. 

 Merino, loss of horns in females 



of, 231 ; horns of, 235. 

 Shells, difference in form of, in male 



and female Gasteropoda, 262 , 



beautiful colours and shapes of, 

 264. 



Shield-drake, pairing with a common 

 duck, 414; New Zealand, sexes and 

 young of, 479. 



Shooter, J., on the Kaffirs, 579 ; on 

 the marriage-customs of the Kaffirs, 

 598. 



Shrew-mice, odour of, 528. 



Shrike, Drongo, 461. 



Shrikes, characters of young, 465. 



Shuckard, W. E., on sexual differ- 

 ences in the wings of Hymenoptera, 

 277. 



Shyness of adorned male birds, 403. 



Siagonium, proportions of the sexes 

 in, 253 ; dimorphism in males of, 

 299. 



Siam, proportion of male and female 

 births in, 245. 



Siamese, general beardlessness of the. 

 560 ; notions of beauty of the, 578 ; 

 hairy family of, 601. 



Sidgwick, H., on morality in hypo- 

 thetical bee community, 99 ; our 

 actions not entirely directed by 

 pain and pleasure, 120. 



Siebold, C. T. von, on the proportion 

 of sexes in the Apus, 255 ; on the 

 auditory apparatus of the stridu- 

 lant Orthoptera, 283. 



Sight, inheritance of long and short, 

 33. 



Signal-cries of monkeys, 87. 



Silk-moth, proportion of the sexes 

 in, 250, 251; Ailanthus, Prof. 

 Canestrini, on the destruction of 

 its larvae by wasps, 251 ; differ- 

 ence of size of the male and fe- 

 male cocoons of the, 278 ; pairing 

 of the, 318. 



Simiadse, 152 ; their origin and divi- 

 sions, 165. 



Similarity, sexual, 225. 



Singing of the Cicadae and Fulgoridse, 

 281 ; of tree-frogs, 350 ; of birds, 

 object of the, 368. 



Sirenia, nakedness of, 56. 



Sirex juvencus, 292. 



Siricidse, difference of the sexes m, 

 292. 



Siskin, 394; pairing with a canary, 

 415. 



Sitana, throat-pouch of the males of, 

 355, 358. 



