8i8 



INDEX 



Subspecies, birds, 524. 



Sula, 517. 



Sunfish, 246, 250. 



Sunspots, 14. 



Suprarenal, see Adrenal. 



Sus, 749. 



Swallow, 485, 491, 522. 



Swan, 517. 



Swift, 520. 



Swimming, of fishes, 133, see Loco- 

 motion. 



Sword-fish, 249. 



Sylvia, 503, 522. 



Symbolic actions, birds, 501. 



Symmetrodonta, 548. 



Synapsida, 533, 539. 



Synaptosauria, 399. 



Syndactyly, 562. 



Syngnathus, 237, 249. 



Sympathetic System, see Autonon- 

 mic nerves. 



Syrinx, 472. 



Tachyglossus, 549. 

 Tachytely, 771. 



Tadpole, amphibia, 298, 342, 358, 

 361. 



tunicates, 67. 

 Tail, actinopterygii, 192, 233. 



amphioxus, 28. 



birds, 435, 440, 512. 



elasmobranchs, 135. 



heterocercal, 136, 234. 



homocercal, 192. 



hypocercal, 127. 



Lampetra, 84. 



Ostracoderms, 125. 



tunicates, 66. 

 Talpa, 584, 778. 

 Tamandua, 596. 

 Tanystropheus, 399. 

 Tapir, 727. 

 Tarpon, 250. 

 Tarrassius, 233. 

 Tar sins, 614. 



Tarsus, 314, see Limbs. 

 Tasmanian wolf, 564. 

 Taste, actinopterygii, 211, 220. 



amphibia, 342, 350. 



birds, 490. 



elasmobranchs, 170. 

 Taurotragns , 762. 

 Teeth, aardvark, 704. 



acanthodii, 187. 



actinopterygii, 196. 



amphibia, 327, 342. 



artiodactyls, 697, 743. 



brachydont, 698. 



brontotheres, 730. 



bunodont, 698. 



carnivores, 681, 691. 



crossopterygians, 270. 



cusp pattern, 548. 



dinosaurs, 424. 



dipnoi, 273. 



edentata, 594. 



elasmobranchs, 142, 158, 176, 180. 



elephants, 710. 



eutherians, 575. 



horses, 732. 



hypsodont, 698. 



hyrax, 708. 



insectivores, 582. 



kangaroos, 542. 



lamprey, 89. 



Latimeria, 272. 



lophodont, 698. 



mammalia, 548. 



man, 638. 



marsupials, 558, 566. 



perissodactyls, 697, 722. 



pinnepedes, 691. 



platypus, 549. 



primates, 606, 611, 618, 623, 629, 638. 



pseudoteeth, 331. 



replacement, 158. 



reptiles, 378, 408, 417, 424. 



rodents, 655. 



sea-cows, 721. 



snakes, 412. 



synapsids, 540, 542. 



tapir, 727. 



ungulates, 697. 



whales, 674. 

 Teleostei, 225. 



Temperature receptors, 172, 415. 

 Temperature regulation, amphibia, 

 299. 



bats, 587. 



birds, 431, 471. 



edentates, 594. 



mammals, 534. 



monotremes, 553. 



reptiles, 372, 430, 540. 



whales, 669. 

 Tench, 256. 

 Tenrec, 583. 

 Tern, arctic, 493, 495. 

 Territory, birds, 503. 

 Tertiary, divisions of, 571. 

 Testis, see Fertilization, Reproduc- 

 tion. 

 Testndo, 380, 393, 396. 

 Tetraclaenodon, 701. 

 Thaliacea, 70. 

 Thecodontia, 418. 

 Thelodonta, 129. 

 Therapsida, 541. 



