854 



INDEX. 



PAGE 



Tetrodon .... 553 

 Tetronerythrin , . . 276 

 Thalamencephalon . . 467 

 Thalassema . . . .221 

 Thalassicola .... 106 

 Thaliacea .... 438 



Theca 159 



Thecophora .... 596 

 Thecosomata . . .401 

 Thelyphonus . . -35 

 Theromorpha . . . 622 

 Thoracic duct . . . 689 

 Thoracostraca . . 284, 292 

 Thornback . . . .510 

 Thread cells = Stinging cells . 138 

 Thread-worms . . .189 



Thrips 345 



Thylacinus .... 723 



Thymus . . . .481 



,, of frog . . .576 



, , of rabbit . . 686 



,, of skate. . . 525 



Thyroid . . . .481 



,, of frog . . .576 



,, of rabbit . . 690 



,, of skate. . . 525 



Thysanoptera . . . 345 



Thysanozoon . . .172 



Thysanura .... 325 



Tibia ..... 465 



Tibio-tarsus .... 628 



Ticks 356 



Tiedemann's bodies . . 245 



Tiger 754 



Tillotherium .... 743 

 Tinamou .... 664 

 Tissues . . . 40-44 



,, nutrition of . . 783 

 Titanotherium . . . 740 



Toads 586 



Tornaria .... 420 



Torpedo .... 547 



,, electric organ of . 547 



Tortoises .... 593 



Toxodon .... 743 



Trabeculae of skull . . 462 



Tracheae .... 330 



,, of Arachnoidea . 347 



,, of Mites. . . 356 



,, of Peripatus . . 304 



I'AGE 



Trachene of spider . . . 353 

 Tracheal gills . . . 326 

 Tracheata .... 302 

 Trachomedusse . . .163 

 TrachymeduSce . . .163 

 Tragulina . . . -733 

 Tragulus .... 734 

 Trematoda . . . -173 

 Trematoda. classification of . 178 

 Treptoplax . . . .132 

 Trichechidie . . . -756 

 Trichechus . . . -757 

 Trichina .... 193 

 Trichocysts .... 92 

 Trichodes . . . .192 

 Trichoplax . . . .132 

 Trichoptera .... 344 

 Tricladida . . . .172 

 Triconodon . . . .714 

 Trigeminal .... 472 

 Trilobites .... 361 

 Tristomum . . . .178 



Triton 586 



Tritubercular . . . 700 

 Tritylodon .... 720 

 Trivium .... 242 

 Trochanter . . . 311, 68 1 

 Trochlear nerve . . . 472 

 Trochoceras . . . .412 

 Trochosphere . . 216, 397 

 Trombidium .... 356 

 Trophoblast .... 707 

 Trophospongia . . . 707 

 Trophozoite .... 101 

 Tropidonotus . . . 612 

 Truncus arteriosus . . 57 1 

 Trypanosoma . . .118 

 Trypsin ... 28, 782 

 Tse-tse fly . . . 117, 346 

 Tube-feet of brittle-star . 248 



,, of sea-urchin . . 251 

 , , of starfish . . 245 

 Tuber cinereum . . . 5^9 

 Tubercle of rib . . . 636 

 Tubifex . . . .219 

 Tubipora . . . 158, 164 

 Tubularia . . . 145, 162 

 Tunicata .... 424 

 ,, classification of . 437 

 Tunicin .... 787 



