INDEX. 559 



Zeuglodon 44, 353, 356 ; dental 240 f . ; dog 379 f. ; duck 308 f. ; 



formula 426 ; dermal plates 420 frog 152 f. ; newt 139 ; turtle 



Zeuglodontidae 44 219 f. 



Zygantra, denned 199 n. ; reptiles Zygosphene, denned 199 n.; reptiles 



276 276 

 Zygapophyses, cod 84; crocodile 



CAMBRIDGE : PRINTED BY J. AND C. F. CLAY, AT THE UNIVERSITY PRESS. 



