Vesperugo . . 
Vestibule. . 
Vestigial structures 
ss eee 
"ee ee 
Vibrissze 
Vicugna . . 
Villi . ‘ . F 
Visceral arches . F 
clefts j 
” 
>» nerves 
Vitelline membrane of ovum 
Vitreous humour . P 
Viverra i é ‘ 
Viviparous Fishes . . . 
*8 Insects 7 
35 Lizards ‘ : 
at Verrtebrates . 
Vole : ; 7 
Volvox. ; 3 e . 
Vorticella . ‘ é ‘ 
Vulva . ‘ ‘ . 
WALKING-STICK insect 
i leaf 
Walrus 
Warm- blooded 4 
Wasps . ;! 4 . . 
Water bears . 
Water scorpion, vascular sys- 
tem of— 
"5 oe Crinoid 
- WP Holothurian 
55 As Ophiuroid . 
sy 43 sea-urchin . 
35 55 starfish 
Weasel. . . . . 
Web of Spiders 5 
Whales é 
Wheel animalcule. a : 
Zygosphene . . . 
855 
PAGE 
Whelk . é 5 ; 420 
Whip scorpions » 366 
White matter of brain . 489, 709 
»  Ofspinalcord . 489 
Wing of bat . . i 781 
» of Birds S . 663 
» Ofinsect . ‘ + 341 
», of pterodactyl . 645 
Wolf... 777 
Wolffian duct é SII 
| Wombat . . . 747 
Worms 7 7 10, II, 179 
XANTHARPYIA . 783 
Xenarthra . 750 
Xiphisternum . . 695 
Xiphosura . : ; 375 
Yapock c - 746 
Yellow cells. » 113 
Yolk 5 - 59 
>> sac : 683, 685, 728 
1» 9 Placenta. . 643, 733 
ZEBRA. ‘ 762 
Zeuglodonts. 771 
Zozea * 315 
Zoantharia 164 
Zona radiata of ovum 513 
Zoochlorellze . 113 
Zoo-geographical regions 805 
Zoonerythrin. . : » 130 
Zoophytes . qi ‘ a 137 
Zygeena ‘ . - 567 
Zygantrum . - 630 
Zygapophyses ‘ - - 700 
Zygomantic arch . + 702, 775 
