INDEX 



733 



Vespa, 368, 369 ; Vespida, 364, 368. 



Vespertilio, 651. 



Vestibule, 394, 395. 



Vibrissae, 634. 



Viceroy butterfly, 352. 



Villi, 406. 



Vinegar-eel, 169. 



Viper, 539, 565 ; Vipera, 539 ; Viperida, 

 539, 565 5 Viperince, 539, 565. 



Vireo, 591; Vireonida, 591. 



Viyerridce, 653. 



Viviparous, 8p, 4.13. 



Visceral skeleton, 493, 494-495 (see skele- 

 ton). 



Vision, 286 (see sense organs). 



Vocal, cords, 483, 639 ; sacs, 484. 



Volvox, 46. 



Vomer, 493, 494. 



Vorticella, 64, 65. 



Vulpes, 653. 



Vulture, 590, 603, 604. 



Wagtail, 591. 



Waldheimia, 186. 



Walking-stick, 343, 344. 



Wallaby, 642, 648. 



Walrus, 657. 



Wapiti, 669. 



Warbler, 591, 593. 



Wasps, 364, 367, 368. 



Water, moccasin, 565, 566; striders, 348; 



vascular system, 193, 200, 205, 206, 



207. 



Wax, glands, 317; pinchers, 315, 316. 

 Waxwing, 591, 615. 

 Weasel, 655. 



Web, of spider, 375, 377'. 

 Web-foot, of frog, 479; turtle, 528. 

 Weevils, 362, 364. 

 Whalebone, 674, 675. 

 Whales, 645, 674-676. 

 Whimbrel, 607. 



Whippoorwill, 612. 



Whitefish, 444, 459-460, 475, 476. 



Wildcat, 656. 



Windpipe, 585 (see trachea). 



Wings, bastard, 576, 582 ; of birds, 616- 



617; honey-bee, 316; insects, 333; 



pigeon, 576, 577. 

 Wishbone, 580, 581. 

 Wolf, 22, 653. 

 Wolverine, 656. 

 Wombat, 649. 

 Woodchuck, 658, 659, 683. 

 Woodcock, 607. 

 Woodpecker, 591, 610, 614. 

 Worms, 353, 354, 363 ; bladder-, 164, 165 ; 



hook-, 175; thread-, 24. 

 Wren, 591, 615, 628; tit, 591. 

 Wryneck, 610. 



Xenopus, 512. 



Xiphias, 469 ; Xiphiida, 444, 469. 

 Xiphisternum, 495, 496. 

 Xiphosura, 383. 



Yak, 671. 



Yellow, fever, 356 ; -jacket, 368. 



Yoldia, 262. 



Yolk, plug, 507, 508; sac, 442. 



Zalophus, 643, 657. 

 Zamenis, 539, 561. 

 Zebra, 644, 671, 701. 

 Zenaidura, 609. 

 Zoaea, 304. 

 Zoantharia, 141. 

 Zoanthidea, 142. 

 Zocecium, 184. 

 Zoogeography, 26. 

 Zoology, 25, 26. 

 Zoothamnium, 65. 

 Zygapophysis, 493, 495. 

 Zygote, 49, 50. 



