INDEX 



727 



Urolophus cruciatus, 171 



Urolophus testaceus, 174 



Uropygiutn, 380* 



Urostyle. of Salmo, 202 : Frog, 266, 267 : 



Amphibia, 298 

 Ursidee, 484 See Bears 

 Ursus, 569 



Ursus americanns, 547 

 Ursus ferox, 546 

 Use-inheritance, 660* 

 Uterine crypts, 476, 594 

 Uterus See Urinogenital organs 

 Uterus masculinus, 550, 474* 

 Utriculus, 115* 



V. 



AGINA, of Elasmobranchii, 180 : Rab- 

 bit, 475 : Mammalia, 584 



Vagus ganglion, 106 



Vagus nerve, 106* 



Valve of Thebesius, 463* 



Valve of Vieussens, 472*, 470 



Vampire Bats, 600 



Vane, 381 



Varanus, 362 



Variation, 650, 651* 



Vasa efferentia, 120, 121* 



Vascular system of Balanoglossus, 4, 6 : 

 Ascidia, 18, 19: Urochorda, 29: Am- 

 phioxus, 51, 52: Craniata, 90-96: 

 Lamprey, 130 : Dogfish, 154 : Elasmo- 

 branchii, 178: Holocephali, 193 : Trout, 

 212: Teleostomi, 212 : Ceratodus, 251, 

 252: Frog, 278, 279, 280, 281, 282, 

 283 : Amphibia, 305, 306, 307 : Lizard, 

 324, 325, 326 : Reptilia, 358, 359 : 

 Pigeon, 401, 402, 403: Birds, 434: 

 Rabbit, 462-466 : Mammalia, 574 



Vaso-dentine, 85* 



Vaso-ganglion, 235 See Red-glands 



Veins, Amphioxus, 51 : Craniata, 93 

 See Vascular system 



Velar tentacles, Amphioxus, 47, 49 



Velum, Amphioxus, 47, 49 : Petromyzon, 

 129 



Velum interpositum, 471* 



Velum transversum, 329, 330 



"Velvet," 502* 



Venomous snakes, 367 



Ventricles See Brain, 100 



Ventral aorta, Amphioxus, 51. Dogfish, 

 155 



Ventral fissure, 98*, 99 



Ventral root of spinal nerve, 99* 



Ventral shield of Pteraspis, 261 



Ventral shield of Snakes, 342 



Ventricle, 90 See Heart 



Vermiform appendix, 462 



Vermis, of 



Vertebra, 7 



Vertebral column, 2* : Euchorda, 44 : 

 Craniata, 73, 74 : Petromyzon, 125 : 

 126: Myxinoids, 140: Dogfish, 146, 

 147, 148 : Elasmobranchii, 172, 174 : 

 Holocephali, 190, 191 : Trout, 201, 

 202 : Teleostomi, 229 : Ceratodus, 247, 

 248 : Frog, 266, 267 : Amphibia, 298, 

 299 : Lizard, 315, 316 : Reptilia, 

 343, 344, 345 : Pigeon, 385, 386, 387 : 

 Birds (Neornithes) 424: Rabbit, 447, 

 448 : Mammalia, 510 : Prototheria. 

 516 : Metatheria, 521 : Edentata, 524 : 

 Cetacea, 531, 532 : Sirenia, 534 : 

 Ungulata, 536 : Carnivora, 544 : 

 Roclentia, 547 : Insectivora, 549 : 

 Chiroptera, 550 : Primates, 552 



Vertebral formula, 387 



Vertebral plate, 121*, 184 



Vertebral rib See Rib, 438 



Vertebral theory of skull, 640, 641 



Vertebraterial canal, 447 



Vertebraterial foramen, 385*, 386 



Vertebrata, 44 



Vesalius, 669 



Vesicles of Savi, 179* 



Vespertilio, 485 



Vestibule, Amphioxus, 45* 



Vestibule, of Rabbit, 475* 



Vexillum See Feather, 381 



Vibrissse, 446, 490 



Vicq d'Azyr, 675 



Villi, of embryo Mammals, 592, 594 



Vipers, 335, 356 



Virginian opossum, 494 



Visceral arch, visceral bar, visceral 

 skeleton Craniata, 76*, 77 



Visceral sensory fibres, 116* 



Visceral motor fibres, 116* 



Viscero-branchial vessel, 20 



Vitreous chamber, 112* 



Vitreous humour, 110, 112* 



Viverra, 641 



Viverridce, 484, 599 



Viviparous Blenny, 241 



Vocal sacs, 266, 309 



Vocal chords, 278 



Voles, 629 



Vomer, 80* See Skull 



Vomerine teeth Holocephali, 192* : 

 Trout, 210 



Vultur, 416, 425, 428 



Vultures, 416, 425, 428 



Vulva of Rabbit, 447, 475 



W 



ALLAKY, 492, 522 



Wallace, A. R., 683, 684, 689 

 Wallace's line, 630 

 Walruses, 484, 506, 569, 599 

 Warning characters, 297, 657* 



