INDEX. 



509 



Stenson, canals of, 79. 

 Sternum in birds, 280, 281. 



of frog, 181. 



of lizard, 35, 36. 



Stomach, 87. 



of camels, &c., 385. 



carnivora, 413. 



mnsk deer, 379. 



porpoise, 407. 



ruminating animals, 378, 379. 



sauropsida, 308. 



sheep, 379. 



teleostei, 160. 



Sturgeon, skull of, 21, 141. 

 Suid«, 367. 



variations in, 373. 



Sympathetic nerves, 77. 

 Syrinx, 103. 

 of birds, 313. 



T. 



Tadpoles, 191, 192. 



Tapirs, characteristics of, 363. 



Tarsus, skeletal elements of, 31. 



Taste, organ of, 86. 



Teeth, 87. 



of amphibia, 182. 



anthropomorpha, 485. 



bat, 455, 456. 



carnivora, 412. 



cats, 422. 



cetacea, 394. 



crocodiles, 258. 



cjTiomorplia, 473. 



delphinoidea, 399. 



didelphia, 325. 



dog, 418,422. ^ 



edentata, 330, 335. 



edentata tubulidentata, 337. 



elephant, 430. 



extinct mammals, 376. 



fishes, 129, 159. 



galeopithecus, 451. 



hedgehog, 446. 



hippopotamus, 374. 



horse, 344, 354. 



hvrax, 433. 



lacertilia, 224. 



Iemurid;i3, 460. 



macrauchenidas, 866. 



man, 492, 496. 



marmoset, 463. 



Teeth of ophidia, 242. 



ornithoscelida, 265. 



pala^otherid;B, 366. 



pig, 371. 



platyrrhini, 467. 



porpoise, 407. 



rabbit, 441. 



rhinoceros, 360. 



rodentia, 434. 



seal, 427. 



sirenia, 389. 



suidiE, 367, 373. 



tapirs, 363. 



toxodontia, 386. 



walrus, 424. 



whale, or whalebone, 398. 



Teleostei, 148. 



aortic arch of, 92. 



Tertiarv epoch, extinct cetaceans 

 of, 411. 



late, fossil man in, 497. 



Thymus, 101. 



Tongue of amphibia, 183. 



sauropsida, 307. 



sloths, 336. 



Torpedo, electrical apparatus of, 

 58. 



Tortoises, 197. 



Touch, organs of, 86. 



Toxodontia, extinct, characteris- 

 tics of, 386. 



Tragulidie, 382. 



Transition of skeleton of ornitho- 

 scelida, 201. 



Trematosaurus, skull of, 179. 



Triassic formation, crocodiles of, 

 258. 



extinct lizards, 226. 



dicynodontia, 261. 



ichthyosauria, 249. 



macropodidaj, ifcc., 328. 



Triassic groups of plesiosauria, 

 215. 



Trichechidoe (walruses), 424. 



Trigeminal nerves, 74, 76. 



Trunk and head, muscular system 

 of, 45. 



Turkey, brain of, 302. 



Turtles, 197. 



heart, 309, 310. 



plastron, 202. 



skull, 203-205. 



Tylopoda or camelidse, 385. 



