INDEX 



837 



TealidK, 196* 



Tectibranchia, 734*, 756 



Teloblast, 464* 



Telolecithal, 21 9* 



Telotrochal, 486* 



Telson, 541* 



Temnocephala, 259, 260, 269, 277, 278, 



279 

 Temnocephalea, 253% 259, 260, 269, 273, 



278, 279, 284, 287 

 Tendon, 37* 



Tentacle sheath, 210* : Roots, 155* 

 Tentacles, 32*, 91 

 Tentacular canal, 213 

 Tentaculifera, 91* : Body and tentacles, 



99, 100 : Nucleus, contractile vacuoles, 



shell, colonies, reproduction, 100, 101 

 Tentaculocyst, 155*, 172 

 Tentorium, 626* 

 Terebellct, 474 

 TerebeHidcv, 472, 474 

 Terebra, 738 

 Terebratula, 366, 368 

 Terebratididw, 367* 

 Terebratidina, 372 

 Teredo, 696, 701 

 Terga, 578* 

 Tergum, 541* 

 Termites, 633 

 Tessera, 177, 178 

 Testis See Spermary 

 Tethys, 734 

 Tetrabranchiata, 790*, 792, 795, 797, 798, 



803, 804 

 Tetramita, 71 

 Tetrarhynchus, 261, 262 

 Tetrastemma, 291 

 Thalassoplancta, 61 

 Thallasema, 499 

 Theca, 205* 



Thomson, J. Vaughan, 3 

 Thorax, of A pits, 531 : A*tacns, 541 

 ^ Peripktncta, 622 : Solpugida, 664 

 Thread-worms, 297 See Nemathel- 



minthes 



Thysanopoda, 568 

 Thysanozoon, 255 

 Thysanura, 640 

 Thurit-ofa, 95 



Ticks, 653, 661 See Acarida 

 Tiedemann's vesicle, 383*, 426 

 Tintinnidium, 94 

 Tissues, 23* 

 Tomopteris, 488 



Tooth-shells, 680 See Scaphopoda 

 Tracheae, 35*, 609, 743 

 Tracheal gills, 642, 643 

 Tracheliastes, 516 

 Trachelius, 94 

 Trachelomomiv, 71 



Trachylinae, 142* : General structure, 

 153 : Sense organs, 154 : Tentacles, 



155 : Reproductive organs, 154, 155 : 

 Development, 155, 156 



Trachymedusae, 142*, l.">4. 155, ]."><> 



Translation, 285* 



Trap-door Spider, 672 



Trapezia, 2i>'. 



Trematoda, 252*, 257, 258, 259, 260, 2(54, 

 265, 266, 267, 268, 269, 27<>, 272, 273, 

 277. 278, 279, 284, 285, 286, 287, 288 : 

 Example, 240 



Trepfo/i/ax, 233 



Triartfirit* l><'<-kii, 606 



Trichina, 310, 311 



Tmc/iimf/ft, 306, 311 



Trichiniasis, 312 



Trichocyst, 89, 93 



Trichoplax, 233 



Trichostomata, 91 



Tricladida, 252*, 253, 255, 257, 263, 264, 

 267, 268, 269, 271, 275, 276, 283, 284 



Tridacna giyas, 710 



Trigger-hair See Cnidocil 



Trit/onia, 695, 701, 710, 711 



Trilobita, 604, 605, 606, 677 



Trimorphism, 129* 



Trimyaria, 290 



Tristicothfeta, 319 



TRITON NODIFERUS, 721 : Shell. 721, 722, 

 723 : External features of soft parts, 

 723 : Foot, 724 ; Visceral spiral, 725 : 

 Mantle, 725 ; Ctenidium, 725 ; Os- 

 phradium, 726 : Digestive system, 721 i, 

 727, 728 : Vascular system, 729 : Ex- 

 cretory system, 729: Nervous systrm, 

 729, 730," 731 : Sensory organs, 731 : 

 Reproductive organs, 732 : Systematic 

 position, 734 



Tritonidw, 733, 734*, 745 



Trivium, 377*, 416 



Trochal disc, 324 



Trochelmintb.es, 322* : Appendix, 33(i 



Trocheta, 516 



Trochophore See Trochosphere 



Trocho*phrti, 32S, 332, 3.S.") 



Trochosphserida, 328* 



Trochosphere, 322, 44(> 



Trochn*, 733, 747 



Troinltidin in fnliijiinmi ni, 665 



Trophozoite, 80 



Trypanofsomes, 71, 72 



Tube-feet, 377*, 376, 39."), 4<>1 



Tnbifex, 473, 4s: { 



Tu hi fir n/.t. 4SS 



Ttfhfpor'i. 1!)."), 1!)S, 199, 203, 208, 21 o 



Tnhii/firm, 145, 153 



Tnlnlnn.i', 143 



Turbellaria, 252*, 2.')."), 256, 2:>7, 2(i2, 

 2li3, 264, 2i;r>. 266, 267, 2<is. 269, 271, 

 272, 273, 274, 275, 276, 284, 28(5 : Ex- 

 amplf. _'-'! 



Tu.-ln., 733, 747 



Typhlosole, 458*. 475, 685 



