INDEX. 785 



defining, 199; representative, of birds, 533; of birds, comparative 

 differences between the sexes of distinct, 534. 



Spectrum femoratum, difference of color in the sexes of : 328. 



Speecb, connection between the brain and- the faculty of, 99; con 

 nection of intonation with music, 653. 



" Spel " of the black-cock, 425. 



Spencer, Herbert, on the influence of food on the size of the jaws, 

 37; on the dawn of intelligence, 75; on the origin of the belief in 

 spiritual agencies, 106; on the origin of the moral sense, 139; on 

 music, 652, 653. 



Spengel, disagrees with explanation of man's hairlessness, 687. 



Sperm-whales, battles of male, 570. 



Sphingida?, coloration of the, 356. 



Sphinx, humming-bird, 359; Mr. Bates on the caterpillar of a, 369. 



Sphinx moth, musky odor of, 349. 



Spiders, 307; parental feeling in, 120; male, more active than 

 female, 250; proportion of the sexes in, 287; secondary sexual char- 

 acters of, 308; courtship of male, 308; attracted by music, 309; male, 

 small hize of, 308. 



Spilosoma menthastri, rejected by turkeys, 358. 



Spine, alteration of, to suit the erect attitude of man, 59. 



Spirits, fondness of monkeys for, 7. 



Spiritual agencies, belief in, almost universal, 106. 



Spiza cyanea and ciris, 468, 



Spoonbill, 425; Chinese, change of plumage in, 525. 



Spots, retained throughout groups of birds, 485; disappearance of, 

 in adult mammals, 623. 



Sprengel, C. K., on the sexuality of plants, 240. 



Spring- boc, horns of the, 580. 



Sproat, Mr., on the extinction of savages in Vancouver Island, 208; 

 on the eradication of facial hair by the natives of Vancouver Island, 

 662; on the eradication of the beard by the Indians of Vancouver 

 Island, 689. 



Spurs, occurrence of, in female fowls, 257, 261; development of, 

 in various species of Phasianidae, 267; of Gallinaceous birds, 412, 

 413; development of, in female Gallinacese, 511. 



Squilla, different colors of the sexes of a species of, 306. 



Squirrels, battles of male, 570; African, sexual differences in the 

 coloring of, 609; black, 616. 



Stag, long hairs of the throat of, 595; horns of the, 257, 260; 

 battles of, 571; horns of the, with numerous branches, 581; bellow, 

 ing of the, 601; crest of the, 606; beetle, numerical proportion of 

 sexes of, 286; use of jaws, 312; large size of male, 316; weapons of 

 the male, 339. 



Stainton, H. T., on the numerical proportion of the sexes in the 

 smaller moths, 283; habits of hliicldnta rvfocinerea, 284 ; on tie 

 coloration of moths, 357; on the rejection of Spilosoma menthastri by 

 turkeys, 358; on the sexes of Agrotix exclamationis, 358. 



Staley, Bishop, mortality of infant Maories, 213. 



Stallion, mane of the, 594. 



Stallions, two, attacking a third, 115; fighting, 571; small canin-e 

 teeth of, 586. 



Stansbury, Capt., observations on pelicans, 116, 



