INDEX 



837 



196* 



Tectibranchia, 734*, 756 

 Teloblast, 464* 

 Telolecithal, 219* 

 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* 

 Terebella, 474 

 Terebellidce, 472, 474 

 Terebra, 738 

 Terebratula, 366, 368 

 Terebratulida, 367* 

 Terebratulina, 372 

 Teredo, 696, 701 

 Terga, 578* 

 Tergum, 541* 

 Termites, 633 



', 177, 178 



Testis See Spermary 

 j"ethy#, 734 

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



803, 804 

 Tetramita, 71 



x, 261, 262 

 291 



ThalasaofioMcta, 61 

 Thallwinu, 499 

 Thec-a, 205* 



Thomson, J. Vaughan, 3 

 Thorax, of Apii3, 531 : Astacus, 541 



Periplantta, 622 : Solpugida, 664 

 Thread-worms, 297 See Nemathel- 



miuthes 



Tli y*a nopod'i , 568 

 Thyxaiiozoon, 255 

 Thysanura, 640 

 Thxrirola, 95 



Ticks, 653, 661 See Acarida 

 Tiedemanirs vesicle, 383*, 426 

 Tintinnidium, 94 

 Tissues, 23* 

 Tomopferis, 488 



Tooth-shells, 680 See Scaphopoda 

 Trachea?, 35*, 609, 743 

 Tracheal gills, 642, 643 

 Trncheliastes, 516 

 Trachelius, 94 

 T^raehelomonas, 71 



Trachylinse, 142* : General structure, 

 153 : Sense organs, 154 : Tentacles, 



155 : Reproductive organs, 154, 1">5 : 

 Development, 155, 156 

 Trachymedusse. 142*, 154, 155, 156 

 Translation, 285* 

 Trap-door Spider, 672 

 Trapezia, 209 



Trematoda, 252*, 257, 258, 259, 260, 264, 

 265, 266, 267, 268, 269, 270, 272, 273, 

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

 Example, 240 

 Treptoplax, 233 

 Triarthrus beckii, 606 

 Trichina, 310, 311 

 Trichinella, 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 gigas, 710 

 Trigger-hair See Cnidocil 

 Trigonia, 695, 701, 710, 711 

 Trilobita, 604, 605, 606, 677 

 Trimorphism, 129* 

 Trimyaria, 290 

 Tristicothceta, 319 



TRITON XODIFERUS, 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, 726, 

 727, 728 : Vascular system, 729 : Ex- 

 cretory system, 729 : Nervous system, 

 729, 730,' 731 : Sensory organs, 731 : 

 Reproductive organs, 732 : Systematic 

 position, 734 

 Tritonidce, 733, 734*, 745 

 Trivium, 377*, 416 

 Trochal disc, 324 



Trocb.elmintb.es, 322* : Appendix, 336 

 Trocheta, 516 



Trochophore See Trochosphere 

 Trochosphara, 328, 332, 335 

 Trochosphaerida, 328* 

 Trochosphere. 322, 440 

 Trochus, 733, 747 

 Trambidiiim fuliyi.Hosum, 665 

 Trophozoite, 80 

 Trypaito-iornes, 71, 72 

 Tube-feet, 377*, 376, 395, 401 

 Tubifex, 473, 483 

 Tulificid'f, 488 



Tuhipora, 195, 198, 199, 203, 208, 210 

 Tubtilaria, 145, 153 

 Tubularif*, 143 



Turbellaria, 252*, 2.55, 256, 257, 262, 

 263, 264, 265, 266, 267, 268, 269, 271, 

 272, 273, 274, 275, 276, 284, 286 : Ex- 

 ample, 236 

 Turbo, 733, 747 

 Typhlosole, 458*, 475, 685 



