816 



INDEX 



ACUOI iic, contractile, 10. 12*. 13, 14, 

 40, 47, 47, 68, 70, 79. so. 91. !ir>. 102 : 

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

 Valenciennes, organ of, 759* 



Valvata, 402* 



Valvate pedicellaria?, 380* 



Van der Hoeven, organ of, 758* 



Variation, individual, 2*, 114, 439 



Variety, 2*, 115* 



Vascular system, 35 : Nemertinea, 

 286, 287 : Acanthoeephala, 308 

 Phoronis, 350 : Matjellania, 358 

 Brachiopoda, 362 : Starfish, 372 

 Antedon, 400 : Echinodermata, 417 

 Holothurian, 418 : Nereis, 434 

 Lumbricus, 448 : Sipuncidus, 487 

 Sipunculoidea, 489 : Archi annelida 

 492 : Hirurlo, 500 : Hirudiriea, 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 : Scaphopoda, 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*, 26'. 



Vitelline membrane, 214 



Vitreous body, 523* 



Viviparous animals, 40* 



Valuta. 730 



Volvox, 74. 78. 79 



Vortex, 260 



Vorticella, 94. 95. 96. 07. 98. 99 



Vulsella. 680 



7 



W 



ALDHi'.l MIA, 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*. 233 



Whale -louse, 571 



Wheel-animalcules See Rotifera 



Wheel-organ, 318 



Whelks, 663, 714 



White body, 750 



White substance of Schwann, 30* 



Winter eggs, 321, 582 



Wood-louse, 514, 554 See Oniscus 



X 



Aiphosura, 646*, 650. 651, 652, 653, 

 656, 660, 661, 662 



ELLOW CELLS See Zoo.taitthella 

 Yellow elastic cartilage. 28* 

 Yoldia, 677 

 Yolk, 20*, 21 

 Yolk-epithelium, 776* 

 Yolk or vitelline glands, 233*, 26.', 

 Yolk reservoir, 240 

 Yolk-sac, 778. 779* 

 Yungia. 271 



JUEPPELINIA, 492 



Zilla callophylla, 654 



Zoasa, 584*. "'>""> 



Zoantharia. 192*, 194, 198. 224 



Zoanthus, 194, 195, 197, 199 



Zocecium, 334* 



Zoo -geographical regions, 8, 9 



Zooid, 41*, 51. 70. ~~. 7s. 27s 



Zoology. 1* 



Zoophyte, 129 



Zoothamnium, 99 



Zoo.rantli.ella, 62, 65 



Zygophiurse, 403* 



Zygote, 50*, 76, 78, 79*. 82. S3* 





Pit IN IK II IN UK LAI' ItiillALN BY TUK IOH N \\AI.I. PKKSS, I III. 

 Mills GAl'.niV. STAMFORD STKKKT. IDNDON. S.L.I. 



