1NDE1. 



615 



Trijenophorus, 338. 

 Trichina, 347, 348, 353, 



354, 355. 



Trichocephalus, 348. 353. 

 Trichodectes, 336, f>6S. 

 Trichodes, 589, 599. 

 Trichodina, 205. 

 Trichomonas, 194. 

 Trichoptera, 564. 

 Trichosomum, 353. 

 Trichotrachelidce, 353. 

 Trigonia, 599. 

 Trilobita, 483. 

 Triphaena,'583. 

 Tristomum coccineum, 



323 



Trivium, 269. 

 Trochal disc of Rotifers, 



401. 



Trochanter, 526. 

 Troctes, 559. 

 Trogus, 595. 

 Trornbidium, 495. 

 T rypeta, 570. 

 Tube-spinners, 501 

 Tubicinella, 446. 

 Tubicolffi, 380. 

 Tubicolaria, 401, 404. 

 Tubifex, 385. 

 Tubipora, 231. 

 Tubitelse, 504. 

 Tubularia, 239. 211. 

 Tubulariae, 241. 

 Turbellaria, 309. 

 Turbinolia, 232. 

 Tylenchus, 357. 

 Type, 52. 



Type of Desor, 341. 

 Typhis, 456. 



Typhlosole of Lumbri- 



cus, 383. 



Tyroglyphus, 492. 

 Umbellula, 231. 

 Upper lip of Crustacea, 



412. 



Uroceridse, 594. 

 Uropoda of Crevettina, 



454. 

 Uterine bell of Acautho- 



cephala, 30 1. 



Uterus, 99. 



Vagina, 99. 



Vampyrella, 194. 



Vanessa. 553. 585. 



Variability, 145. 



Varieties, 141. 



Variety, Relation of to 

 species, 149. 



Vascular pore of Nema- 

 toda, 346. 



Vascular system, 59. 



Vas deferens, 99. 



Vein, 62. 



Veins, 528. 



Velarium, 252. 



Velarium of Scypho- 

 medusae, 252. 



Velella, 246, 250. 



Velcllidae, 244. 



Velia, 572. 



Venous, 73. 



Ventral plate, 545. 



Ventriculitidse, 221. 



Veretillum, 231. 



Vermes, 302. 



Vesiculas seminales, 99. 



Vesiculata, 239, 241. 



Vespa, 597. 



Vexillum, 206. 



Vibrio, 206. 



Vine-lice, 570. 



Vinegar worm, 357. 



Visceral nerves, 82. 



Vitellarium of Turbel- 

 laria, 312. 



Vocal organs, 552. 



Volvox, 195. 



Vortex, 313. 



Vortex viridis, 310. 



Vorticella, 205. 



Waffenfliegen, 577. 

 Wallace, 147. 

 Warm-blooded, 74. 

 Wasps, 597. 

 Wasserlaufer, 572. 

 Water-bugs, 571. 

 Water-fleas, 419. 

 Watermites, 495. 

 Water-scorpions, 572. 



Water-spiders, 504. 



Water-vascular system. 

 308, 311. 



Water-vascular vessels 

 of Platyhelmintb.es 75. 



Wax glands, 532. 



Weevils, 588. 



Wcizenfliege, 576. 



White ants, 559. 



White butterflies, 585. 



White coral, 232. 



Wickler, 582. 



Wings, 528. 



Winkelspinne, 504. 



Winter eggs of Rotifera, 

 403. 



Winter eggs of Turbel- 

 laria, 313. 



Winter-sleep, 74. 



Wolf-spider, 504. 



Wood-bees, 598. 



Wood-wasps, 504. 



Worm, Paste, 357. 



Worm, Vinegar, 357. 



Wotton, 133. 



Xantho, 478. 

 Xenos, 566. 

 Xiphosura, 480. 

 Xylocopa, 598. 

 Xylophaga, 589. 

 Xylophagus, 577. 

 Xylotomas, 576. 



Yolk, 111. 

 Yolk-cord, 543. 

 Yolk, Effect of, on de- 

 velopment, 120. 

 Yponomeuta, 582. 



Zerene, 583. 

 Zotea, 466. 

 Zoantharia, 231. 

 Zoanthus, 232. 

 Zoogloca, 200. 

 Zoological provinces,! 60. 

 Zoophytes, 209. 

 Zoosperms, 209. 

 Zoospores, 194, 197. 

 Zoothammium, 205. 

 Zunsler, 582. 

 Zygsena, 584. 



Printed by Hazell, Wateon, A Viney, Ld., London and Aylesbury 



