INDEX 



731 



Tergum, 276, 277, 330. 



Termes, 340; Termites, 340. 



Tern, 590, 607, 608. 



Terra pene, 542. 



Terrapines, 541, 542, 571. 



Tcrricola, 236. 



Tessera, 132, 133. 



Test, of sea cucumber, 202, 203 ; tuni- 



cates, 390. 

 Testes, 490, 491 (see reproductive 



system) . 

 Testudinata, 527, 534~536, 540-546; 694, 



695- 



Testudinida, 535, 541 ; Testudo, 535, 543. 

 Tetrabranchia, 268. 

 Tctraopes, 363. 

 Tctrastemma, 177. 

 Tctraxonida, 105. 

 Thalassicolla, 40. 

 Thalassochelys, 543. 

 Thalessa, 367. 

 Thaliacea, 390, 393. 

 Thamnophis, 539, 560, 561. 

 Theca, of polyp, 137. 

 Thecocystis, 209. 

 Tttecoidea, 209, 210, 213. 

 Theridida, 377 ; Theridium, 376. 

 Theromorpha, 694, 695. 

 Thermotropism, 36, 37. 

 Thigmotropism, 36, 57, 228, 291. 

 Thomisidee, 377 ; Thomisus, 376. 

 Thorax, 314, 329. 

 Thrasher, 591. 

 Thrips, 342. 

 Thrush, 591. 

 Thunnus, 469. 

 Thylacomys, 642. 

 Thylacynidce, 649. 

 Thymus, 451, 492. 

 Thyone, 190, 206, 207. 

 Thyrohyals, 493, 495. 

 Thyroid, 451, 492. 

 Thyropteridce, 651. 

 Thysanoptera, 337, 342. 

 Tibia, 314,315, 372, 404. 

 Tibiale, 404, 497. 

 Tibio-fibula, 497. 

 Tibiotarsus, 580, 582. 

 Ticks, 24, 275, 337, 359, 380. 

 Tiger, 656. 



Tinamous, 589, 596, 597; Tinamus, 589. 

 Tinea, 355; Tineida, 355. 



Tipulida, 356. 



Tissues, 74, 75, 76. 



Titmouse, 591. 



Toads, 477, 512, 517, 518, 519, 522; 



horned, 555. 

 Tomicus, 364. 

 Tomistoma, 548. 



Tongue, 480 (see digestive system) 

 Tonsil, 637. 



Tornaria, 214, 388, 389, 693. 

 Torpedinida, 430. 

 Tortoises, 527, 534, 540, 543. 

 Tortoise-shell, 544, 571. 

 Tortricidce, 355. 

 Torus, 677. 

 Toucan, 610. 

 Toxopncustes, 82, 190. 

 Tracheae, of insects, 319, 320, 373 ; 



Pcripatus, 308; pigeon, 585; rabbit, 



639- 



Tracheata, 275. 

 Trachydermon, 252. 

 TrachymeduscR, 128. 

 Trachynema, 128. 

 TragulidcE, 667; Tragulus, 671. 

 Transverse process, 402, 404, 493, 495. 

 Tree hoppers, 346. 

 Trematoda, 150, 157-162. 

 Trepang, 208. 

 Trial and error, 115. 

 Triarthrus, 293, 299. 

 Triassic, 697. 



Trichinella, 173, 174; Trichinellida, 173. 

 Trichinosis, 173. 

 Trichocysts, 53, 54. 

 Trichoptera, 337, 350. 

 Tricladida, 152, 156. 

 Trilobita, 292, 293, 299. 

 Trimera, 363. 

 TrionychidcE, 536, 545 ; Trionychoidea, 



536. 



Trionyx, 536, 545. 

 Triploblastic, 89. 

 Triton, 511, 515, 516, 524. 

 Trituberculata, 685. 

 Trochanter, 314, 315, 372. 

 TrochilidcE, 591, 612; Trochilus, 613. 

 Trochocystis, 209. 

 Trochophore, of Echiuroidea, 187; mol- 



lusks, 271, 272 ; Polygordius, 232, 233, 



241 ; Rotifera, 183. 

 Trochosphere (see trochophore) . 



