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INDEX 



Water-Iizarda, 365 



Water opossum, 494 



Water-voles, 506 



Water-newt, 294 



Weasels, 181, 484, 571 



Weaver, 227 



Weber, Max, 684 



Weberian apparatus, 238* 



Webs, 266, 422 



Weismann, A., 689 



Weka, 444 



Welle, W. C.,683 



Whale-bone — See Baleen 



Whalebone Whales, 480, 501, 516, 531, 



533, 557, 567, 606 

 Whales — See Cetaeea, 479 

 Wheel-organ of Amphioxus, 45* 

 White, Gilbert, 675 

 White matter, 98*, 99 

 Whiting, 221 

 Wiegmann, 681 

 Willemoea-Suhm, 684 

 Willughby, F., 672 

 Wing of Birds, 379, 380 

 Wing-coverta — See Pterylosis, 385 

 Wolff, C. F., 674 

 Wolffian body, 118*, 119 

 Wolffian duct, 119, 120* 

 Wombats, 479, 496, 521, 524, 562 

 Woodpeckers, 417, 422, 429, 434 

 Wotton, Edward, 668 

 Wrasse, 222, 225, 234 



X. 



i^ENOPHANES, 679 

 Xe■|^opua, 294, 298, 303, 304 

 Xenosauridce, 369 

 Xiphiplastron, 347 

 Xiphi-sternum, 2Y2, 273 



Y. 



Y 



. AK, 638 

 Yolk -plug, 256, 290 

 Yolksac, 185, 216, 256 

 Yolk cells, 288* 



z. 



Jebra, 482, 503, 599 



Zeuglodon, 605, 640 



Zeuglodonta — See Arehieoceti 



Zoarces, 241 



Zona radiata, 587* 



Zonary placenta; 595* 



Zoo-geographical regions, 628, 634 : Re- 

 lations of, 634 



Zonuridrf, 369 



Zyycfna, 170 



Zygantrum, 343* 



Zygapophyais, 201*, 247 



Zygomatic arch, 511* 



Zygomatic process, 452 



Zygosphene, 343* 



R. CLAV -AND SONS, LTD., BREAD STREET HILL, E.C., AND BUNGAY, SUFFOLK. 



