712 



INDEX 



Tree-frogs, 288, 289, 293 



Tree Kangaroos, 482 



Tree-snakes, 324, 356 



Treviranus, 656 



Triassic period, 619 



Trichechidce, 470- See Walruses 



Trichosurus, 567 



Triconodont teeth, 544* 



Trigeminal ganglion, 101* 



Trigeminal nerve, 101*, 154, 155, 156 



Tritor, 186*, 187 



Trituberculate molar, 544* 



Trochanter, lesser, great, 313, 444 : 

 third, 444 



Trochilidce, 404, 423, 429 



Trochlea, 442 



Trochlear nerve, 101* 



Trogones, 404 



Trogons, 404 



Trophoblast, 570* 



Tropidonotus natrix, 337 

 Trout, 192, 214, 220 See Salmo fario 

 Trunk, of Balancglossus, 3 : Craniata, 

 65 : Elephant, 490* 



Trunk of spinal nerve, 96* 

 Trunk region, 195 

 Trunk vertebra, 195 



Trygon, 181 



Trygonorhina, 168, 176 



Tuatara, 329 See Hatteria 



Tuber cinereum, 457* 



Tubercular facet, 435 



Tuberculum olfactorium, 247* 



Tumblers, 367 



Tunic, of Urochorda, 14* 



Tunicates See Urochordata 



Turicine, 14* 



Turbinal bone, 321 



Turbinals, 393 



Turbinares, 402*, 412, 421, 423, 429 



Turbot, 214, 235 



Turdidce, 404 



Turdus, 412 



Turkey-buzzards, 403 



Turnix, 403 



Turtles, 325, 331, 346, 348, 349, 357, 



358 



Turtur, 404 

 Tusks See Teeth 

 Tympanic bone, 439, 497 

 Tympanic bulla, 437, 438 

 Tympanic cavity, 277, 278 

 Tympanic membrane, 257, 305* 

 Tympano-eustachian fossa, 309 

 Tympanum of syrinx, 385 

 Tyndall, J., 665 

 Typhlopidce, 338 

 Typhlosole, of Ascidia, 15, 18* : 



Petromyzon, 125, 130 

 Typotheria, 588 



U 



Ui 



LNA, 80, 81* See Limb-skeleton 



Ulnare, 80, 81* See Limb-skeleton 



Umbilical cord, 577* 



Umbilicus, inferior and superior, 369* 



Unau, 483 



Unciform, 443 See Limb-skeleton of 

 Mammalia 



Uncinates of Reptiles, 335* : Pigeons, 

 374 : Birds, 412 



Ungulata, 467*, 476, 486, 519-528, 

 547, 553, 558, 579, 586 



Ungulata vera, 467*, 486, 490, 525, 

 527, 528, 579 



Unguligrade feet, 467* 



Unio, 601 



Upper arm, 67, 304 



Upupidcv, 404 



Urachus, 577* 



Urethra, 460 



Urinary bladder, 116* 



Urinary tubules, 113*, 114 



Uriiiogemtal organs, of Craniata, 113, 

 114, 115, 116, 117 : Petromyzon, 130, 

 131: Myxinoids, 137 : Dogfish, 158; 

 159, 160, 161 : Elasmobranchii, 174, 

 175 : Holocephali, 189. 190 : Trout, 

 208, 209 : Teleostomi, 231, 232, 233 : 

 Ceratodus, 247, 248 : Frog, 278, 279 : 

 Amphibia, 299, 300: Lizard, 322, 

 323 : Reptilia, 351 : Pigeon, 394, 

 395 : Aves, 422 : Rabbit, 459, 460, 

 461 : Mammalia, 564-567 



Urinogenital organs, development of, 

 115, 116 



Urochord-, 23* 



Urochorda, 13* : Example, 14 : Dis- 

 tinctive characters and classifica- 

 tion, 20 : Systematic position of 

 Example, 23 : General features, 23 : 

 Enteric canal, 28 : Heart, 28 : 

 Nervous system and sense organs, 

 28-30 : Renal organ, 30 : Repro- 

 ductive system, 30 : Development 

 and metamorphosis, 3040 : Dis- 

 tribution, &c., 40, 41 : Affinities, 41, 

 42 



Urodeeum, 384, 385* 

 Urodela, 284*, 285, 287, 288, 289, 290, 

 291, 293, 294, 295, 296, 298, 299, 

 300, 302 

 Uro-hyal, 201 



Urolophus cruciatiis, 166 



Urolophus testaceus, 169 

 Uropygium, 367* 



Urostyle, of Salmo, 196 : Frog, 258, 

 259 : Amphibia, 289 



Ursidce, 470, 529, 530, 551 See Bears 



Ursus, 552 



Ursus americanus, 530 



