668 



Index. 



Agnus, 2432. 



Agoniates, 2172. 

 Agonomaliis, 242^. 

 Agonopsis, 242-. 

 Agonostonms, 2312. 

 Agonus, 2422. 

 Agoutis, 6352. 

 Agrammus, 242 ^ 

 Agriochoerus, 578, 585i. 

 Agriopus, 2421. 

 Ahlia, 2251. 

 Ai, 5442. 

 Ailia, 2212. 

 Aipichthys, 239^. 

 Aipysurus, 370^. 

 Air-bladder, occurrence 



and function of in 



Teleostei, 200, 204. 

 Air-sacs, Balaena, 513 ; 



birds, 444. 

 Aistopoda, 315^. 

 Akodon, 6341. 

 Akysis, 2212. 

 Alactaga, 6342. 

 Alauda, 4752. 

 Alausa, 2142. 

 Albacore, 2382. 

 Albatross, 4611. 

 Albula, 206, 2142. 

 Albulichthys, 2192. 

 Albumus, 2202. 

 Alca, 4681. 

 Alcedo, 4711. 

 Alces, 5392. 

 Alcidea, 2421. 

 Alcj'one, 4711. 

 Aldrovandia, 2272. 

 Alectis, 2392. 

 Alepidosaurus, 2261. 

 Alepisaurus, 226i. 

 Alepocephalus, 2142. 

 Aleposomus, 2142. 

 Alestes, 2172. 

 Algiroides, 353 1. 

 Allacodon, 5412. 

 Allantoic artery and 



vein, 521. 

 Allice-shad, 2142. 

 Alligator, 3832. 

 AUigatorellus, 3822. 

 Alligatorium, 3822. 

 AUodon, 5412. 

 Allosaurus, 385i. 

 Allotheria, 541. 

 Allulandina, 3682. 

 Alopecias, 125, 152'. 

 Alopias, 1521. 

 Alopoglossus, 3522. 

 Alosa, 208, 2142. 



Alouata, 6571. 



Alpaca, 5871. 



Alsophylax, 349'. 



Altrices, 451. 



Alula, 424. 



Alutera, 247'. 



Alytes, 264, 293, 295, 

 ■>96, 3101. 



Amastridium, 368'. 



Ambassis, 2342. 



Ambergris, 562'. 



Ambliceps, 2212. 



Ambloplites, 234'. 



Amblotherium, 5402. 



Amblycephalus, 371'. 



Amblyodipas, 3682. 



Amblyopsis, 227' ; 

 habits, 92. 



Amblyopus, 241'. 



Amblyornis, 4771. 



A lubly pharyngodon, 

 2192. 



Amblypoda, 603. 



Amblyrhynchichthys, 

 2192. 



Amblyrhynchus, 3502. 



Amblystoma, 266, 278, 

 280, 306'. 



Ameiurus, 2212. 



Ameiva, 345, C522. 



Ametrida, 6482. 



Amia, 160, 161, 162, 

 164, 166, 182 ; con- 

 nection of testis to 

 kidney, 89. 



Amiichthys, 2342. 



Amioidci, 180. 



Amitra, 2422. 



Amiurus, 2212. 



Ammocoetes, 96, 113, 



in. 



Ammocrypta, 2342. 

 Ammodorcas, 591'. 

 Ammodytes, 231'. 

 Ammopleurops, 2402. 

 Amnion, false, 518. 

 Amorphochilus, 648'. 

 Ampelis, 4762. 

 Amphiardis, 3662. 

 Amphibamus, 315i. 

 Amphibia, 263. 

 Amphibolurus, 350'. 

 Amphicoelous, 59. 

 Amphictis, 6202. 

 Amphicyon, 6221. 

 Amphignathodon, 



3111. 

 Amphilestes, 5401. 

 Amphimeryx, 585|i. 



Amphioxus, 10, 13, 3l ; 

 connective tissue of, 

 15 ; fin-rays of, 16 ; 

 development of, 31 ; 

 habits, 1 1 ; oral cirri, 

 11 ; metajileural folds, 

 12 ; atrial pore, 12. 



Amphiperatherium, 

 5391. 



Amphipnous, 200, 206, 

 2222. 



Amphiprion, 2372. 



Amphiproviverra, 541'. 



Amphisbaena, 335, 353', 

 353. 



Amphisile, 229'. 



Amphistium, 239'. 



Amphistylic, 63. 



Amphitherium, 540, 

 540'. 



Amphitragulus, 5892. 



Amphiuma, 269, 280, 

 290, 305. 



Amphodus, 3112. 



Amplorhinus, 3682. 



AmpuUary canals, 79. 



Amynodon, 6OI2. 



Anabas, 183, 232' ; 

 breathing, 92. 



Anableps, 196, 2271. 



Anacanthini, 232. 



Anaconda, 3652. 



Anacrytus, 2172. 



Anadia, 3522. 



Anadromous, 91. 



Anaides, 306'. 



Anampses, 238'. 



Anapterus, 226'. 



Anaptomorphus, 653'. 



Anarhynchus, 467'. 



Anarosaurus, 3972. 



Anarrhichas, 2441. 



Anarrhichthys, 2441 



Anas, 4631. 



Anastomus, 2171. 



Anchilophus, 598i. 



Anchippodus, 6O81. 



Anchisaurus, 384, 365. 



Anchitherium, 5972, 598. 



Anchovia, 214'. 



Anchovy, 214i. 



Ancient living genera, 

 150, 234, 258, 4132, 

 563, 571, 5811, 5932, 

 6011,6201, 6221, 624i. 



Ancistrodon, 3712. 



Ancodus, 5832. 



Ancylodon, 2352. 



Ancylopoda, 609. 



