79 8 



INDEX 



Anthropoidea, 617. 

 Anthus, 521. 

 Antiarchi, 186. 

 Antilocapra, 760. 

 Antlers, 757. 

 Anura, 361, 365. 

 Apataelurus, 684. 

 Apatosaurus, 423. 

 Aphetohyoidea, see Placodermi. 

 Apidium, 625. 

 Aplodontia, 657. 

 Apoda, 366. 

 Apodes, 237. 

 Appendicularia, 72. 

 Apteryx, 514. 

 Apus, 520. 

 Aquila, 456. 

 Araeoscelis, 399. 

 Archaeoceti, 675. 

 Archaeohippus, 740. 

 Archaeomeryx, 755. 

 Ardiaeopteryx, 509. 

 Archelcn, 398. 

 Archidiskodon, 716. 

 Archosauria, 402, 416. 

 Arctocyonidae, 683. 

 Ardea, 461, 517. 

 Arginine, 49. 

 Armadillos, 595. 

 Arsinoitherium, 718. 

 Arteries, amphibia, 335. 



amphioxus, 34. 



birds, 470. 



dipnoi, 277. 



elasmobranchs, 160. 



Lampetra, 92. 



mammals, 536. 



reptiles, 378, 397, 420. 



teleosts, 201. 

 Arthrodira, 186. 

 Artiodactyla, 741. 

 Ascaphus, 307, 334, 360, 365. 

 Ascidians, 60, 70. 

 Ascidian tadpole, 67. 

 Asio, 520. 



Astrapotherium, 703. 

 Astroscopus, 221, 249. 

 Astylosternus, 334. 

 Asymmetron, 25. 

 Ateles, 620. 

 Atrium, Amphioxus, 25. 



Balanoglossus, 53. 



tunicates, 61, 70. 

 Auditory organs, see Ear. 

 Auk, 519. 

 Australian aboriginals, 649. 



mammals, 568. 

 Australopithecinae, 643, 781. 

 Autonomic nerves, amphioxus, 33. 



actinopterygii, 214, 222, 258. 



amphibia, 338. 



chromatophores, 258, 410. 



elasmobranchs, 161, 171, 173. 



Lampetra, 91, 97. 



reptiles, 410. 



tunicates, 64. 

 Autotomy, 410. 

 Aves, 509. 

 Awareness, 5. 

 Aye-aye, 610. 

 Azores, birds of, 530. 



Baboon, 624. 



Badger, 686. 



Balaena, 673. 



Balaenoptera, 672. 



Balanoglossus, 50, 78. 



Balfour, F., 149. 



Ballistes, 253. 



Baluchitherium, 709, 730. 



Barracuda, 251. 



Barrington, E. J. W., 32. 



Basilosaurus, 675. 



Bathyergidae, 660. 



Bathyglagus, 214. 



Bathypelagic fishes, 247, 254, 265. 



Bat fish, 257. 



Bats, 585. 



Batrachoseps, 339. 



Bauria, 544. 



Bdellostoma, 98, 122. 



Beak, birds', 464. 



Bear, 685. 



Beaver, 657. 



Bee-eater, 521. 



Behaviour, 



amphibia, 354. 



amphioxus, 39, 41. 



birds, 472, 480, 491. 



carnivora, 681. 



chameleon, 409. 



enteropneusta, 55. 



evolutionary significance, 781. 



fishes, 225. 



insectivores, 582. 



lampreys, no, 113. 



mammals, 525. 



primates, 610, 620. 



reptiles, 382, 407, 409. 



tunicates, 64. 



ungulates, 697. 



whales, 672. 

 Bernard, C, 534. 

 Berrill, N. J., 63. 

 Bettongia, 567. 

 Biomass, birds, 432. 



fishes, 242, 283. 



increase in evolution, 242, 769. 



