INDEX. 



A. 



AcciPENSER, cartilaginous cra- 

 nium of, 141. 

 Air sacs in birds, 317. 

 Alimentary canal, 86. 

 Alligator terrapene, 198. 

 Amia, caudal extremity of, 17. 



calva, reproductive organs 



of, 144. 



Amphibia, general characteristics, 

 172. 



development, 190, 



groups, 172. 



heart, 183. 



limbs, 180. 



muscles, 47. 



reproductive organs, 189, 



respiratory organs, 187. 



teeth, 182. 



Amphisboenoida, 230. 



Ankle-joint of sloths, 331. 



Anoplotheridoe, 376. 



Antebrachium, muscles of, 51. 



Anthropidaj. See Man. 



Anthropomorpha, general charac- 

 teristics of, 475. 



comparison of, with man, 487. 



divisions, 475. 



Aortic arches. See Arches, aortic. 



Apes. See Simiadse. 



Arch, pectoral, 34. 



pelvic, 37. 



pectoral and pelvic, of che- 



lonia, 206. 



pectoral and pelvic, of ple- 



siosauria, 213, 214. 



Arches, aortic, 91, 92. 



number of, belonging to 



skull, 77. 



pectoral, and sternum, of a 



frog, 181. 



Arches, visceral, skeletons of, 85. 



Arctopithecini (marmosets), gene- 

 ral characteristics of, 462. 



brain, 464. 



limbs, 463. 



muscles, 464. 



skull, 463. 



teeth, 463. 



vertebrae, 463. 



Armadillos, general characteristics 

 of, 339. 



Artiodactyla, non - ruminantia, 

 367. 



ruminantia, 377. 



Ascalabota, 225. 



Australians, peculiarities of, 495. 



Aves. See Birds. 



Axolotl (Siredon), 186. 



aortic arch of, 92. 



B. 



Bal^noidea, general character- 

 istics of, 395. 



Baleen plates, or whalebone, 398. 



Bats. See Cheiroptera. 



Birds, general characteristics of, 

 194. 



air sacs of, 317. 



brain of Meleagris yullo- 



pavo, 303. 



classification, 272. 



digits, 292, 297. 



ear, 306. 



heart, 312. 



larjiix and syrinx, 313. 



limbs, 291, 295. 



lungs, 316. 



muscular system, 300. 



organs of copulation, 318. 



pectoral arch, 289. 



