726 



INDEX 



Tortoises, 66 



Toucans, 421 



Touch-cells. 106, 107* 



Toiicli corpuscles, 107* 



Toxodontia. (iOH 



Tiabecuhv, 75* 



Trabeculce, lieart, 279 



Trabecular regions, 76* 



Trachea — See Respiratory organs 



'J'mchiinis, 227 



Trnchypterus, 233 



Trminlidd', 631 



Transverse process — See Vertebra 



Trapezium, 456 — See Limb-skeleton of 



Mammalia 

 Trapezoid, 456— See Limb-skeleton of 



Mammalia 

 Tree-frogs, 297, 298, 302 

 Tree-porcupines, 475 

 Tree Kangaroos, 496 

 Tree-snakes, 335, 367 

 Treviranus, 677 

 Triassic period, 639 

 Trirhechidd', 484 — See Walruses 

 Trirhosurm, 583 

 Triconodont, 561* 

 Trigeminal ganglion, 104* 

 Trigeminal nerve, 104, 160, 

 Tritor, 192* 

 Trituberculata, 561* 

 Trochanter lesser, great, 323, 457 : 



third, 457 

 TrochUid(v, 417, 436, 443 

 Trochlea, 456 

 Trochlear nerve, 104" 

 Trogones, 417 

 Trogons, 417 

 Trophoblast, 588* 

 Tropidonof Hs natrix, 348 

 Trout, 198, 220, 227— See Salmo fario 

 Trunk, of Balanoglossus, 3 : Craniata, 



67 : Elephant, 505* 

 Trunk of spinal nerve, 99* 

 Tryrion, 187 

 Try<jonorhina, 173, 181 

 Tuatara, 339 — See Hatteria 

 Tuber cinereiun, 471* 

 Tu})ercular facet, 448 

 Tuberculum olfactorium, 254* 

 Tumblers, 378 

 Tunic of Urochorda, 15 

 Tunicates — see Urochordata 

 Tunicine, 14 

 Turbinal bone, .331 

 Turbinals, 405 



Turbinares, 415, 426, 434, 436, 442 

 Turbot, 221, 241 

 Tnrdido-, 417 

 Turdus, 425 

 Turke3' buzzards, 416 

 Tnrnix, 416 

 Turtles, 336, 341, 357, 359, 360, 368, 370 



Turtnr, 416 



Tusks— See Teeth 



Tympanic bone, 453, 511 



Tympanic bulla, 45(i 



Tympanic cavitj-, 286 



'l\vmpanic membrane, 265, 315 



Tympano-eustachian fossa, 319 



TympaiHim of svrinx, 398 



Tyiidall, J , 68ti 



TytMopUhf, 349 



Tv()lilos()lcof Asiidia, 16. 19 : 1'ctromvzon, 



'130, 134 

 Typotheria, 6US 



c 



V. 



LNA, 82*, 83— See Limij-skeleton 



Ulnare, 83* — See Limb-skeleton 



Umbilical cord, 595* 



Umbilicus, inferior and superior, 381* 



Unau, 498 



Unciform. 456 — See Limb-skeleton of 

 Mammalia 



Uncinates of Reptiles, 344* : Pigeons, 

 386. 387* : Birds, 425 



Ungulata, 48 1^ 490, 501, 536-544, 564, 

 571, 575, 576, 606 



Ungulata vera, 481*, 505, 541, 544, 598 



Unguligrade, 481* 



Upper arm, 69, 314 



UpnpUht, 417 



Uraohus 595* 



Urethra, 474 



Urinary bladder, 120"* 



Urinary tubules, 117* 



Unio, 621 



Urinogenital organs, of Craniata, 117, 

 118: Petromyzo7i, 134, 135 : Myxinoids, 

 141 : Dogfish, 163, 164, 165, 166 : 

 Klasmobranchii, 180: Holocephali, 195, 

 196 : Trout, 215 : Teleostomi, 239, 

 240, 241 : Ceratodus, 254, 255 : Frog, 

 286, 287, 288 : Amphibia, 308. 309 : 

 Lizzard, 332. 333: Reptilia. 362: 



^ Pigeon, 407. 408: Aves, 435: Rabbit, 



"""473, 474, 475 : Mammalia, 582-585 



Urinogenital organs, development of, 119 



Urochorda, 14 : Example, 14 : Distinctive 

 characters and classification, 21 : 

 Systematic position of Plxample, 24 : 

 (feneral features, 24: Enteric canal, 

 29 : Heart, 29 : Nervous system and 

 sense-organs. 30 : Renal organ, 30 : 

 Reproductive system, 31 : Develo})- 

 nientand metamorphosis, 31 : Distribu- 

 tion, &c., 42: Affinities, 42 



Urodanun. 397* 



Urodela. 293*, 294, 296, 297, 298, 299, 

 300, 302. 303, 304, 305, 306, 308,. 309, 

 310, 312 



Uro-hval, 207 



