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INDEX 



Water-lizards, 365 



Water opossum, 494 



Water-voles, 506 



Water-newt, 294 



Weasels, 181, 484, 571 



Weaver, 227 



W T eber, Max, 684 



Weberian apparatus, 238* 



Webs, 266, 422 



Weismann, A., 689 



Weka, 444 



Wells, W. C., 683 



\Vhale-bone See Baleen 



Whalebone Whales, 480, 501, 516, 531, 



533, 557, 567, 606 

 Whales See Cetacea, 479 

 Wheel-organ of Amphioxus, 45* 

 White, Gilbert, 675 

 White matter, 98*, 99 

 Whiting, 221 

 Wiegmann, 681 

 Willemoes-Suhm, 684 

 Willughby, F., 672 

 Wing of Birds, 379, 380 

 Wing-coverts See Pterylosis, 385 

 Wolff, C. F., 674 

 Wolffianbody, 118*, 119 

 Wolffian duct, 119, 120* 

 Wombats, 479, 496, 521, 524, 562 

 Woodpeckers, 417, 422, 429, 434 

 Wotton, Edward, 668 

 Wrasse, 222, 225, 234 , 



.ENOPHAXES, 679 



Xenopua, 294, 298, 303, 304 

 Xenosauridce, 369 

 Xiphiplastron, 347 

 Xiphi-sternum, 272, 273 



AK, 638 

 Yolk -plug, 256, 290 

 Yolksac, 185, 216, 256 

 Yolk cells, 288* 



Z: 



_ iEBRA, 482, 503, 599 

 Zeuglodon, 605, 640 

 Zeuglodonta See Archrvoceti 

 Zoarces, 241 

 Zona radiata, 587* 

 Zonary placenta, 595* 

 Zoo-geographical regions, 628, 634 : Re- 

 lations of, 634 

 Zonuridcf.y 369 

 Zyywna, 170 

 Zygantrum, 343* 

 Zygapophysis, 201*, 247 

 Zygomatic arch, 511* 

 Zygomatic process, 452 

 Zygosphene, 343* 





R. CLAY AND SONS, LTD., BREAD STHKKT HILL, K.C., AND BTTNGAY, SITFKi)I.K f 

 J 



