INDEX 



751 



Transverse bone, 574 



Transverse processes, 416 



Tree-frogs, 559 



Tree-shrews, 670 



Trematoda, 101, 103, 106, 112 



Trichechidae, 678, 721 



Trichechm, 678, 721 



Trichina, 131 



Trichinosis, 131 



Trichocysts, 39 



Triclada, 98, 99, 112 



Tridactyle, 349 



Trigeminal nerves, 426 



Trigla, 543 



Trionychidae, 597 



Triradiate, 88 



Triton, 522, 525, 538, 541 



Tritors, 471 



Trochanter, 236 



Trochus, 121 



Trophi, 122 



Trophozoites, 44 



Tropidonotus, 587, 591, 605 



Trout, 489, 490 



Trunk, 434, 499 



Trygon, 470, 512 



Trypanosoma, 35 



Trypsin, 429 



Tsetse-fly, 257 



Tube-feet, 327 



Tubifex, 111 



Tubipora, 71 



Tubularia, 66, 78 



Tubulipora, 376 



Tunicata, 404 



Tupaiidae, 670 



Turbellaria, 94, 96, 100, 111 



Turbot, 494 



Turdus, 635 



Turkey buzzard, 634 



Turtles, 568, 585, 591 



Tylenchus, 131 



Tylopoda, 694 



Tympanic, 641 



Tympanic bulla, 641 



Tympanic membrane, 545, 645 



Tympanum, 545, 624 



Typhlosole, 153 



Tyroglyphus, 268, 269, 282 



Ulna, 521 



Ulnare, 521 



Umbilical placenta, 664 



Umbo, 299 



Uncinate process, 584 



Uncus, 122 



Ungulata, 684, 722 



Ungulata vera, 687, 723 



Unicellular, 52 



Unio, 296, 299, 300, 302, 325 



Uniseriate, 460 



Univalve, 298 



Upper temporal arcade, 574 



Upupa, 635 



Urea, 4 



Ureter, 288, 465, 540 



Uric acid, 4, 231 



Urinary sinus, 465 



Urinogenital organs, 438, 439 



Urinogenital sinus, 465, 659 



Urochorda, 404 



Urodaeum, 627 



Urodela, 524; classification of, 542, 



560 



Urodele, 536 

 Urostyle, 547 

 Ursidae, 676, 721 

 Ursus, 676, 721 

 Uterus, 656, 658 

 Utriculus, 420 

 Uvula, 641 



Vacuole, food-, 16, 38; contractile-, 



17, 38, 39 



Vagina, 129, 295, 659 

 Vagus nerve, 427 

 Vampire, 708 

 Varanus, 572, 576, 577 

 Variation, 9 

 Varieties, 10 



Vas deferens, 129, 154, 155, 442 

 Velum, 62, 63, 121, 391, 397, 446 

 Vena azygos, 581, 655 

 Vena cava, 306, 535, 536, 654 

 Ventricle, 430, 535 

 Venus's girdle, 81 

 Vertebra, 341 



Vertebral column, 458, 523 

 Vertebrata, 385 



Vesicula seminalis, 155, 463, 465 

 Vespa, 256, 281 

 Vespertilio, 708, 725 

 Vesperugo, 708, 725 

 Vestibule, 444 

 Vibracula, 379 

 Vicuna, 696 

 Villi, 664 

 Vipera, 591, 605 

 Viperidae, 591 

 Visceral arches, 403, 431, 446, 450, 



535, 549, 550 

 Visceral ganglia, 293, 433 

 Visceral hump, 285 

 Visceral loop, 293 

 Visceral muscles, 153 

 Visceral peritoneum, 153 

 Viscous fluid, 3 

 Vitellarium, 97, 124 

 Vitreous humour, 422 

 Viverra, 678 

 Viverridae, 678 

 Viviparous, 272 



