INDEX 



343 



Uncinatum:, os, 245 



Ureters, 317 



Urinary organs, 318 



Urogenital sinus, 317 



Uropygial gland (eleeodochon), 129 



Urosaorals, 218 



Zona pellucida, 326 



Zoological characters, 107 ; groups, 



class, order, family, genus, species, 



110 

 Zygoma, 230 

 Zygapophysis, 202 



THE END 



Printed hy R. & R. Clark, Edinburgh 



