INDEX 



765 



Swimming. See Locomotion 

 Sycon, 84, 85 



Swimbladder. See Bladder, air 

 Sylvian fissure, 460 

 Symbiosis, 97, 147 

 Symmetry, bilateral, 106, 296 



radial, 106, 296 

 Sympathetic system, 523, 614 

 of dogfish^' 338 

 of frog, 388 

 of rabbit, 463, 471 

 Sympathin, 472 

 Symphysis, 539 

 Symplasts, 35 

 S3mapse, 512, 612 

 Synapsida, 497, 578 

 S^-napticulae, 303 

 Syncytium, 35, 499, 520, 523 



in Ascaris, 135 



in embryo of crayfish, 217 



in epidermis of crayfish, 198 

 Syndactyly, 496 

 Syngamy, 4, 35, 38, 52 

 Synovia, 421 



Synovial capsule, 421, 539 

 Synsacrum, 406 

 Syrinx, 410 

 Syrphids, 147, 239 

 Systole, 31 



Tabanids, 145, 239 

 Tadpole, 345, 547, 617, 637 

 TcBnia, 154 



ccenurus, 132 



echinococciis, 132 



saginata, 129, 132 



serrata, 132 



solium, I2y, 132 



life-history of, 128, 129 

 Tail, 552 



of Cetacea, 486 



of dogfish, 312 



of fishes, 552 



of lancelet, 300 



of pigeon, 395 



of rabbit, 417 



of tadpole, 637 



vestigial vertebrae of. See Coccyx, 

 Pygostyle, Urostyle 

 Tail-fan of crayfish, 199 

 Talpa euYopcea, 476 

 Tapeworms, 127 , 132, 152 

 Tapirs, 490 

 Tarsus of cockroach, 230 



of vertebrates, 359, 406, 556 

 Taste-buds, 470 

 Taxis, 259 

 Tectrices, 394 



Teats, 418 



Teeth, bunodont, 480, 492 



canine, 432, 440 



carnassial, 440 



cheek, 432, 440 

 Teeth, diphyodont, 440 



eye, 432 



heterodont, 439 



incisor, 431, 440 



lophodont, 484, 495 



milk. 439 



molar, 440 



of dog, 431, 440 



of dogfish, 322 



of frog, 362 



of horse, 491 



of man, upper, 483 



of rabbit, 439 



of whales, 486 



permanent, 439 



premolar, 440 



selenodont, 492 



thecodont, 431 

 Tegmen, 229 

 Telencephalon, 608 

 Teleostei, 546 

 Telodendria, 511 

 Telophase, 689, 694 

 Telson, 195, 198 



Temperature regulation, 191, 454 

 Temporal lobe, 460 

 Tendons, 422, 516, 517 

 Tentacles of cephalopods, 285 



of Hydra, 89, 92 



of lancelet, 302 



of medusa, 105 



of Obelia polyp, 103 



of sea-anemone, 115 



prostomial, of Nereis, 177 



sense, of starfish, 288 

 Tergum of cockroach, 228, 230 



of crayfish, 195 

 Termites, 148, 246, 249 

 Testacea, 80 

 Testes, function of hormone of, 47 



of Ascaris, 138 



of cockroach, 236 



of crayfish, 216 



of dogfish, 335 



of earthworm, 173 



of frog, 379 



of Hydra, 99 



of leech, 183 



of liver fluke, 122 



of lizard, 619 



of mammal, 541 



of pigeon, 414 



of rabbit, 455 



