INDEX 



505 



Urethra, 150 

 Urochordata, 425 

 Urodaeum, 125 

 Urodela, 435 

 Uromastix, 405 

 Uropygial gland, 117 

 Uterus, 149, 351 



— masculinus, 149 

 Utricle, 39, 114, 395 



Vagina, 149 



Vagus nerve, 26, 47, 155, ^56, 367, 



368, 370, 386 

 Valvula, 74, 376 

 Varanus, skull of, 104, 297 

 — , temperature of, 405 

 Vas deferens, 55, 86, 99, 113, 149, 



190, 349 

 Vasa efferentia, 55, 86, 98, 111, 190, 



221, 349 

 Vegetative pole, 161, 172 

 Velum, 8, 28, 170 



— trans versum, 41 

 Ventral aorta, 13, 30, 58, 331 



— nerves, 4, 365 



— ribs, 83, 307 



Ventricle of heart, 30, 58, 98, 109, 



127, 147, 33i 

 Ventricles of brain, 41, 86 

 Vermiform appendix, 146, 346 

 Vermis, 131 



Vertebral plate, 4, 26, 181, 270 

 Vertebrarterial canal, 121, 308 

 Vestibule, 149 

 Vidian nerve, 387 



Villi, of intestine, 146 

 — . of trophoblast, 251 

 Visceral arch, 48, 49, 271, 356 



— lobe, 368 



— motor component, 365 



— muscles, 55, 271, 357, 368 



— sensory component, 365 

 Vitelline membrane, 161, 172, 198, 



227 



— veins, 216 

 Vitreous humour, 24 

 Vocal cords, 146, 342 

 Voluntary muscles, 55, 270, 364, 370 

 Vomer, 135, 297, 300 



Warm-blooded animals, 404 

 Webbed feet, 449 

 Weberian ossicles, 340 

 Wheel-organ, 8, 170 

 White matter, 42, 366 



— meat, 122 



— rami, 385 



Wolffian duct, 55, 86, 98, in, 130, 

 149, 189, 220, 349 



Xiphisternum, 142 



Yellow spot, 394, 472 



Yolk, 161, 172, 198, 240, 247 



Yolk-sac, 213, 229, 231, 247 



Zona pellucida, 227 



— radiata, 198 

 Zygapophysis, 72, 307 

 Zygomatic process, 135 



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 LONDON AND BECCLES 



