INDEX 



Amiurus, 255. 

 Ammocoetes, 222. 

 Ammodytes, 263. 

 Ammodytidae, 262. 

 Ammodytoidea, 262. 

 Amnion, 288. 

 Amniota, 288. 

 Amphibia, 274. 

 Amphiccelias, 315. 

 Amphicoelous, 138. 

 Amphicyon, 412. 

 Amphilestes, 380. 

 Amphioxus, 2. 

 Amphiplaga, 259. 

 Amphiplatyan, 140. 

 Amphisbaena, 321. 

 Amphistylic skull, 334; 

 Amphitherium, 380. 

 Amphiuma, 285. 

 Amphiumidse, 285. 

 Ampullae, 68, 70. 

 Amyda, 310. 

 Amyzon, 255. 

 Anabas, 262. 

 Anableps, 257. 

 Anacanthini, 264. 

 Anaconda, 325. 

 Anal fin, 177, 228. 

 Anallantoidea, 226. 

 Anamnia, 226. 

 Anapophysis, 141. 

 Anaptomorphidae, 415. 

 Anaptomorphus, 415. 

 Anarrhichas, 261. 

 Anarrhichidae, 261. 

 Anas, 348. 

 Andrias, 285. 

 Angler, 266. 

 Anguilla, 257. 

 Anguillidae, 256. 

 Anguis, 320. 

 Angulare, 164. 

 Anhima, 348. 

 Anhinga, 347. 



