INDEX 



861 



Tenthredinidae, proportions of the sexes 



in, 335 ; fighting habits of male, 383 ; 



difEerence of the sexes in, 383. 

 Tephrodomis, young of, 604. 

 Terai, in India, 242. 

 Termites, habits of, 382. 

 Terns, white, 636 ; and black, 63T. 

 , seasonal change of plumage in, 



636. 

 Terror, common action of, upon the 



lower animals and man, 99. 

 Testudo elegans, 456. 



nigra, 456. 



Tetrao cupido, battles of, 477; sexual 



difEerence in the vocal organs of, 



483. 

 . phasianellus, dances of, 492 ; du- 

 ration of dances of, 523. 



scoticus, 587, 600, 608. 



tetrix, 587, 600, 608; pugnacity 



of the male, 412. 

 umbellus, pairing of, 477; battles 



of, 477 ; drumming of the male, 487. 



urogalloides, dances of, 523. 



urogaliuB, pugnacity of the male, 



412. 

 urophasianus, inflation of the 



cesophagus in the male, 483. 

 Thamnobia, young of, 604. 

 Thaumalea pieta, display of plumage 



by the male, 512. 

 Thecia, sexual differences of coloring 



in species of, 405. 



rubi, protective coloring of, 407. 



Thecophora fovea, 402. 



Theognis, G-recian poet, on selection in 



mankind, 50. 

 Theridion, slridulation of males of, 361. 

 '— Irneatum, 360. 

 Thomisus citreus, and T. floricolens, 



diiference of color in the sexes of, 



359. 

 Thompson, J. H., on the battles of 



sperm-whales, 647. 

 W., on the coloring of the male 



char during the breeding season, 



442 ; on the pugnacity of the males 



of Gtallinula chloropus, 468; on the 



finding of new mates by magpies, 



526; on the finding of new mates 



by Peregrine falcons, 527. 

 Thorax, processes of, in male beetles, 



387. 

 Thorell, T., on the proportion of the 



sexes in spiders, 337. 



Deacentr— ' 



Thombaok, difEerence in the teeth of 

 the two sexes of the, 436. 



Thoughts, control of, 166. 



Thrush, pairing with a blackbird, 535; 

 colors and nidiflcation of the, 587. 



Thrushes, characters of young, 587, 

 599. 



Thug, remorse of a, 159. 



Thumb, absence of, in Ateles, Oolobus, 

 and Hylobates, 76. 



Thury, IT., on the numerical propor- 

 tion of male and female birtha 

 among the Jews, 320. 



Thylacinus, possession of the marsj^ial 

 sac by the male, 216. 



Thysanura, 368. 



Tibia, dilated, of the male Orabo cri- 

 brarius, 364. 



and femur, proportions of, in the 



Aymara Indians, 56. 



Tierra del Puego, marriage-customs of, 

 769. 



Tiger, colors and markings of the, 704. 



Tigers, depopulation of districts by. in 

 India, 70. 



Tillus elongatiis, difEerence of color in 

 the sexes of, 386. 



Timidity, variability of, in the same 

 species, 99. 



Tiueina, proportion of the sexes in, 

 329. 



Tipula, pugnacity of male, 369. 



Tits, sexual difEerence of color in, 590. 



Toads, protective colors of, 453 ; male, 

 treatment of ova by some, 218 ; male, 

 ready to breed before the female, 

 281. 



Todas, infanticide and proportion of 

 sexes among the, 338 ; practice poly- 

 andry, 338, 763 ; choice of husbands 

 among the, 763. 



Toe, great, condition of, in the human 

 embryo, 28. 



Tomicus villosus, proportion of the 

 sexes in, 335. 



Tomtit, blue, sexual difference of color 

 in the, 590. 



Tonga Islands, beardleasness of the 

 natives of, 721, 748. 



Tooke, Home, on language as an art, 

 120-121. 



Tools, flint, art of grinding rough, 195; 

 use of, universal, 195 ; used by mon- 

 keys, 114-116; use and manufacture 

 of, 74-75. 

 ■Vol. IL— 19 



