458 



INDEX — GLOSSARY. 



Tendrils, 114 

 Tentacles, 528 



Termcs — a p:enus of termites. 

 Terminal bud, 55 

 Termite queen, 260 

 Termites, 223, 224, 583 

 polymorphism in, 740 

 Terrapin, 643 



diamond back, 215 

 Testa, 42 



Testes of hydra, 121, 500 

 Tcstudinata, 643 

 Tethyodea, 621 

 Tetrabranchiata, 616 

 Tetrads (in maturation), 695 

 Tetraspores — four spores produced 

 asexually in one mother cell, 

 248 

 Texas cattle fever, 771 

 Thaliaceae, 623 

 Thallophytes, 177, 224-263 

 Thoracic duct, 472, 473 

 Thoracostraca, 561 

 Thorns, 113, 114 

 Thousand legs, 574, 575 

 Thread worms, 540, 756-759 

 Thrushes, 650 

 Thymus gland, 720 

 Thyroid gland, 720 

 Ticks, 571 

 Tigers, 663 

 Tillandsia, 45 

 Tinamiformes, 650 

 Tissues, origin of, 719 

 Titmouse, 650 

 Toad fish, 636 

 Toads, 637, 640 

 Torpedo, 874 

 Tortoise, 643 



shell, 347, 643 

 Toxin, 776 

 Tracheae, 11, 569, 574, 579 



of Insects, 162, 478 

 Tracheids, 11, 74, 296 

 Traguloidea, 666 

 Translocation of food substances, 92, 



93 



Transpiration, 86 



Trap-door spider, 154-156 



Tree toads, 640 



Trematoda — ^Trematodes, 536, 753 



Trichinella, 757 



Trichogyne, 248 



Trochophore, 609 



larva of annelids, 501 

 Tropa^a. See luna moth. 



Numbers refer to paragraphs; Black Fa 



Trunk fish, 419, 636 



Trypanosome, 239, 766, 767 



Trypsin, 462, 463 



Tryptic — having the proteolytic action 



of trypsin. 

 Tsetse fever, 766 



fly, 766 

 Tube feet, 550 

 Tuber, no 

 Tuber, 47 

 Tuberaceae, 260 

 Tubinares, 650 

 Tunic, 619 

 Tunicata, 619 

 Turbcllaria, 535 

 Turgid, distended, swollen. 

 Turkey, 650 

 Turtles, 643 



shell of, 420 

 Tylopoda, 666 

 Tympanum — eardrum, 397, 401 



Ulothricales, 241 

 Umbel, 119 

 Ungulata, 652, 666 

 Urea, COH4N2, 492 

 Uredospores, 749 

 Ureter, 492 

 Urinary bladder, 492 

 UrsidcB, 663 

 Urochorda, 619 

 Urodela, 172, 639 

 Uropygal gland, 350 

 Utriculus, 393, 394 



Vacuole, 672 

 Vascular bundle, 74 

 Variation, 781 



Variety — subdivision of a species, 781 

 Vegetation and climate, 223 

 Veliger, a mollusc larva of peculiar 

 form with a ciliated collar, 



598 

 Ventral, 312 



ganglionic chain — ventral nerve 



cord, 

 nerve cord, 438, 580 

 Vertebral column of vertebrates, 792 

 Vertebrata — vertebrates, 480, 626 

 Vertebrate appendage, 413, 799 



eye, 379 . 

 Vertebrates, circulation in, 472 

 development in, 506 

 digestive tract of, 460 

 exoskeleton of, 419 

 kidneys of, 492 

 ce numbers refer to figures. 



