668 



INDEX. 



Agnus, 243 2 . 

 Agoniates, 217 2 . 

 Agonomalus, 242 2 . 

 Agonopsis, 242 2 . 

 Agonostomus, 231 2 . 

 Agonus, 242 2 . 

 Agoutis, 635 2 . 

 Agrammus, 242 1 . 

 Agriochoerus, 578, 585 1 . 

 Agriopus, 242 1 . 

 Ahlia, 225 1 . 

 Ai, 544 2 . 

 Ailia, 221 2 . 

 Aipichthys, 239 1 . 

 Aipysurus, 370 1 . 

 Air-bladder, occurrence 



and function of in 

 Teleostei, 200, 204. 

 Air-sacs, Balaena, 513 ; 



birds, 444. 

 Aistopoda, 315 1 . 

 Akodon, 634 1 . 

 Akysis, 221 2 . 

 Alactaga, 634 2 . 

 Alauda, 475 2 . 

 Alausa, 214 2 . 

 Albacore, 238 2 . 

 Albatross, 461 1. 

 Albula, 206, 214 2 . 

 Albulichthys, 219 2 . 

 Alburnus, 220 2 . 

 Alca, 468i. 

 Alcedo, 4711. 

 Alces, 589 2 . 

 Alcidea, 2421. 

 Alcyone, 4711. 

 Aldrovandia, 227 2 . 

 Alectis, 239 2 . 

 Alepidosaurus, 226 1 . 

 Alepisaurus, 226 1 . 

 Alepocephalus, 214 2 . 

 Aleposomus, 214 2 . 

 Alestes, 217 2 . 

 Algiroides,.353 1 . 

 Allacodon, 541 2 . 

 Allantoio artery and 



vein, 521. 

 Allice-shad, 214 2 . 

 Alligator, 383 2 . 

 Alligatorellus, 382 2 . 

 Alligatorium, 382 2 . 

 Allodon, 541 2 . 

 Allosaurus, 3851. 

 Allotheria, 541. 

 Allulandina, 368 2 . 

 Alopecias, 125, 1521. 

 Alopias, 1521. 

 Alopoglossus, 352 2 . 

 Alosa, 208, 214 2 . 



Alouata, 6571. 

 Alpaca, 587 1 . 

 Alsophylax, 349 *. 

 Al trices, 451. 

 Alula, 424. 

 Alutera, 247 J . 

 Alytes, 264, 293, 295, 



296, 3101. 



Amastridium, 368 1 . 

 Ambassis, 234 2 . 

 Ambergris, 562 1. 

 Ambliceps, 221 2 . 

 Ambloplites, 2341. 

 Amblotherium, 540 2 . 

 Amblycephalus, 371 J . 

 Amblyodipas, 368 2 . 

 Amblyopsis, 227 1 ; 



habits, 92. 

 Amblyopus, 2411. 

 Amblyornis, 477 1 . 

 Amblypharyngodon, 

 219 2 . 



Amblypoda, 603. 



Amblyrhynchichthys, 

 219 2 . 



Amblyrhynchus, 350 2 . 



Amblystoma, 266, 278, 

 280, 306i. 



Ameiurus, 221 2 . 



Ameiva, 345, 352 2 . 



Ametrida, 648 2 . 



Amia, 160, 161, 162, 

 164, 166, 182 ; con- 

 nection of testis to 

 kidney, 89. 



Amiichthys, 234 2 . 



Amioidei, 180. 



Amitra, 242 2 . 



Amiurus, 221 2 . 



Ammocoetes, 96, 113, 

 114. 



Ammocrypta, 234 2 . 



Ammodorcas, 5911. 



Ammodytes, 231 1 . 



Ammopleurops, 240 2 . 



Amnion, false, 518. 



Amorphochilus, 648 1 . 



Ampelis, 476 2 . 



Amphiardis, 366 2 . 



Amphibamus, 315 1 . 



Amphibia, 263. 



Amphibolurus, 350 1 . 



Amphicoelous, 59. 



Amphictis, 620 2 . 



Amphicyon, 6221. 



Amphignathodon, 

 3111. 



Amphilestes, 54Qi. 



Amphimeryx, 5851. 



Amphioxus, 10, 13, 31 ; 



connective tissue of, 



15 ; fin-rays of, 16 ; 



development of, 31 ; 



habits, 11 ; oral cirri, 



1 1 ; metapleural folds, 



12 ; atrial pore, 12. 

 Amphiperatherium, 



5391. 

 Amphipnous, 200, 206, 



222 2 . 



Amphiprion, 237 2 . 

 Amphiproviverra, 5411. 

 Amphisbaena, 335, 3531, 



355. 



Amphisile, 229 1 . 

 Amphistium, 2391. 

 Amphistylic, 63. 

 Amphitherium, 540, 



5401. 



Amphitragulus, 589 2 . 

 Amphiuma, 269, 280, 



290, 305. 

 Amphodus, 31 1 2 . 

 Amplorhinus, 368 2 . 

 Ampullary canals, 79. 

 Amynodon, 601 2 . 

 Anabas, 183, 2321 ; 



breathing, 92. 

 Anableps, 196, 2271. 

 Anacanthini, 232. 

 Anaconda, 365 2 . 

 Anacrytus, 217 2 . 

 Anadia, 352 2 . 

 Anadromous, 91. 

 Anaides, 306 ] . 

 Anampses, 238 1 . 

 Anapterus, 226 1 . 

 Anaptomorphus, 653 1 . 

 Anarhynchus, 467 x . 

 Anarosaurus, 397 2 . 

 Anarrhichas, 244 1 . 

 Anarrhichthys, 244 1 . 

 Anas, 463 1 . 

 Anastomus, 217 1 . 

 Anchilophus, 598 1 . 

 Anchippodus, 60S 1 . 

 Anchisaurus, 384, 365. 

 Anchitherium, 597 2 , 598. 

 Anchovia, 214 1 . 

 Anchovy, 2141. 

 Ancient living genera, 

 150, 234, 258, 413 2 , 

 563, 571, 5811, 5932, 

 6011,6201, 622i, 624 1 . 

 Ancistrodon, 371 2 . 

 Ancodus, 583 2 . 

 Ancylodon, 235 2 . 

 Ancylopoda, 609. 



