666 



INDEX. 



56; variability of, In species of 

 Macacus and In baboons, 56; 

 presence of, in the early progen- 

 itors of man, 156; length of, in 

 pheasants, 439, 445, 446; difference 

 of length of the, in the two 

 sexes of birds, 445. 



Tait, Lawson, on the effects of 

 natural selection on civilized na- 

 tions, 130. 



Tanager, scarlet, variation in the 

 male, 418. 



Tanagra sestiva, age of mature 

 plurhage in, 478. 



rubra, 418; young of, 483. 



Tanais, absence of mouth in the 

 males of some species of, 204; 

 relations of the sexes in, 251; 

 dimorphic males of a species of, 

 262. 



Tankerville, Earl, on the battles 

 of wild bulls, 497. 



Tanysiptera, races of, determined 

 from adult males, 463. 



Sylvia, long tail-feathers of, 



445. 



Taphroderes distortus, enlarged 

 left mandible of the male, 274. 



Tapirs, longitudinal stripes of 

 young, 459, 541. 



Tarsi, dilatation of front, in male 

 beetles, 273. 



Tarsius, 152. 



Tasmania, half-castes killed by 

 the natives of, 166. 



Tasmanians, extinction of, 179. 



Taste, in the Quadrumana, 536. 



Tattooing, 174; universality of, 

 569. 



Taylor, G., on Quiscalus major, 

 244. 



Tea, fondness of monkeys for, 7. 



Tear-sacks, of Ruminants, 525. 



Teebay, Mr., on changes of plu- 

 mage in spangled Hamburgh 

 fowls, 224. 



Teeth, rudimentary incisor, in 

 Ruminants, 11; posterior molar, 

 in man, 19; wisdom, 20; diversity 

 of, 25; canine, in the early pro- 

 genitors of man, 156: canine, of 

 male mammals, 498; in man, re- 

 duced by correlation, 557; stain- 

 ing of the, 569; front, knocked 

 out or filed by some savages, 

 569. 



Tegetmeier, Mr., on the transmis- 

 sion of colors in pigeons by one 

 sex alone, 226; numerical pro- 

 portion of male and female 

 births in dogs, 240; on the 

 abundance of male pigeons, 242; 

 on the wattles of game-cocks, 

 398; on the courtship of fowls, 

 411; on the loves of pigeons, 412; 

 on dyed pigeons, 412; blue dragon 

 pigeons, 440. 



Tembeta, S. American ornament, 

 570. 



Temper, in dogs and horses, in- 

 herited, 67. 



Tench, proportions of the sexes in 

 the, 245; brightness of male, dur- 

 ing breeding season, 336. 



Tenebrionidse stridulation of, 299. 



Tennent, Sir J. E., on the tusks of 

 the Ceylon Elephant, 503, 510; 

 on the frequent absence of beard 

 in the natives of Ceylon, 555; on 

 the Chinese opinion of the as- 

 pect of the Cingalese, 572. 



Tennyson, A., on the control of 

 thought, 119. 



Tenthredinidffi, proportions of 

 the sexes in, 250; fighting habits 

 of male, 289; difference of the 

 sexes in, 289. 



Tephrodornis, young of, 462. 



Terai, in India, 177. 



Termites, habits of, 288. 



Terns, white, 488; and black, 489. 



• , seasonal change of plumage 



in, 488. 



Terror, common action of, upon 

 the lower animals and man, 67. 



Testudo elegans, 347. 



nigra, 346. 



Tetrao cupido, battles of, 363; sex- 

 ual difference in the vocal or- 

 gans of, 367. 



■ ■ phasianellus, dances of, 375; 



duration of dances of, 400. 



scotlcus, 449, 459, 465. 



tetrix, 449, 459, 465; pugnacity 



of the male, 359. 



umbellus, pairing of, 363; 



battles of, 363; drumming of the 

 male, 371. 



— urogalloides, dances of, 400. 



urogallus, pugnacity of the 



male, 359. 



urophasianus, inflation of 



the Eesophagus in the male, 368. 



Thamnobia, young of, 462. 



Thaumalea picta. display of plu- 

 mage by the male, 391. 



Thecla, sexual differences of col- 

 oring in species of, 307. 



rubi, protective coloring of, 



308. 



Thecophora fovea, 305. 



Theognis, selection in mankind, 28. 



Theridion, stridulation of males 

 of, 270. 



— lineatum, 269. 



Thomisus citreus, and T. flori- 

 colens, difference of color in the 

 sexes of, 268. 



Thompson, J. H., on the battles 

 of sperm-whales, 496. 



. W., on the coloring of the 



male char during the breeding 

 season, 337; on the pugnacity of 

 the males of Gallinula chloro- 

 pus, 357: on the finding of new 

 mates by magpies, 402; on the 

 finding of new mates by Pere- 

 grine falcons, 402. 



Thorax, processes of, in male 

 beetles, 292. 



Thorell, T., on the proportion of 

 the sexes in spiders, 251. 



