816 



INDEX 



V 



V ACUOLE, contractile, 10, 12*, 13, 14 

 46, 47, 47,68, 70, 79, 80, 91, 95, 102 

 non-contractile, 11*, 62, 95, 96 



Valenciennes, organ of, 759* 



Valvata, 402* 



Valvate pedicellarise, 380* 



Van der Hoeven, organ of, 758* 



Variation, individual, 2*, 114, 439 



Variety, 2*, 115* 



Vascular system, 35 : Nemertinea 

 286, 287 : Acanthocephala, 308 

 Phoronis, 350 : Magellania, 358 

 Brachiopoda, 362 : Starfish, 372 

 Antedon, 400 : Echinodermata, 417 

 Holothurian, 418: Nereis, 434 

 Lumbricus, 448 : Sipunculus, 487 

 Sipunculoidea, 489: Archi annelida 

 492 : Hirudo, 500 : Hirudinea, 505 

 Apus, 521 : Astacus, 539 : Crus 

 tacea, 581 : Peripatus, 592 : Peri 

 planeta, 609 : Insects, 627., ' 628 

 Scorpio, 641, 642 : Arachnida, 652 

 Mussel, 672, 673 : Pelecypoda, 688 

 Amphineura, 698 : Triton, 709, 710 

 Gastropoda, 725 : Scaphopcda, 736 

 Sepia, 744: Nautilus, 761, 763 

 Cephalopoda, 773, 774 



Vas deferens See Spermiduct 



Vegetal pole, 731 



Velarium, 169*. 179 



Velata, 402* 



Velella, 165 



Veliger, 691, 692*, 731, 734 



Velum, 136*, 137, 169, 692, 732 



Ventral plate, 601* 



Ventral surface, 43* 



Ventricle, 37* 



Venus gnidia, 681 



Venus's Flower-basket, 122 



Venus's Girdle, 220 



Vermes, 233 



Vermetes, 714 



Vermetus, 734, 735 



Vermiform embryos, 229 



Vertebral column, 4 



Vertical plane, 210* 



Vestibule, 97* 



Vibracula, 342, 345* 



Vibratile corpuscles, 392 



Virgula, 166* 



Visceral spiral, of Triton, 706 



Vitellaria, 265 



Vitelline or yolk glands, 233*, 265 



Vitelline membrane, 214 



Vitreous body, 523* 



Viviparous animals, 40* 

 Vohita, 730 

 Volvox, 74, 78, 79 



Vortex, 260 



Vorticella, 94, 95, 96, 97, 98, 99 



Vulxella, 680 



W 



ALDHhIMIA. See Magellania 

 Wallace's line, 9* 

 Wandering cells, 112 

 Wasps, 621, 632, 637 

 Water-bugs, 619 

 Water-flea, 514, 551 

 Water-pores, 399*, 417 

 Water-sac, 523 



Water-tubes, 399*, 417, 669, 670 

 Water-vascular system, 232*, 23:? 

 Whale -louse, 571* 

 Wheel -animalcules See Rot if era 

 Wheel-organ, 318 

 Whelks, 663, 714 

 White body, 750 



White substance of Schwann, 30* 

 Winter eggs, 321, 582 

 Wood-louse, 514, 554 -See Oniscu 



X 



iphosura, 646*, 650, 651, 652, 

 656, 660, 661, 662 



Y 



ELLOW CELLS See Zooranthel 

 Yellow elastic cartilage, 28* 

 Yoldia, 677 

 Yolk, 20*, 21 

 Yolk-epithelium, 776* 

 Yolk or vitelline glands, 233*, 265 

 Yolk reservoir, 240 

 Yolk-sac, 778, 779* 

 Yungia, 271 



Z, 



IEPPELIXIA, 492 

 Zilla caUophylla, 654 

 Zosea, 5S4*, 585 

 Zoantharia, 192*, 194, 198, 224 

 Zoanthus, 194, 195, 197, 199 

 Zocecium, 334* 

 Zoo -geographical regions, 8, 9 

 Zooid, 41*, 51, 76, 77, 78, 278 

 Zoology, 1* 

 Zoophyte, 129 

 Zoothamnium. 99 

 Zooxanthella, 62, 65 

 Zygophiurae, 403* 

 Zygote, 50*, 76, 78, 79*, 82. 83* 



PH1NTKJ) IX G-HKAT BK1TAIT? BT THE CORNWALL PRKSS, LTD., 

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