INDEX. 



411 



Astartidse, 148, 166, 271, 272. 



Asteroidea (deep-sea), 111. 



Asterolepis, 302. 



Astrsea, 247-249. 



Astraeidse, 144. 



Astrangia, 248. 



Atalapha, 349, 351. 



Atax, 126. 



Ateles, 394-396. 



Atherines, 104. 



Atherura, 362. 



Athyris, 145. 



Atlanta, 120, 122. 



Atlantosaurus, 161. 



Atrypa, 145, 214. 



Auchenia, 375, 376. 



Aurelia, 122. 



Aurochs, 379. 



Australian fauna, anomalies of, 9. 



Australian realm, 97. 



AviculidaB, 148, 271. 



Axis, 381. 



Axolotl, 306. 



Aye-aye, 402. 



Azores, birds of the, 7, 48. 



Babbling-thrush, 72, 94, 107. 



Baboon, 397. 



Babyrousa, 374. 



Baculites, 168, 267. 



Badger, 390. 



Baikal, Lake, fauna of, 212. 



Bairdia, 207, 273, 274. 



Baleena, 341. 



Balsenoptera, 341, 344. 



Balsenotus, 345. 



Baltimore bird, 66, 79. 



Bandicoot, 99. 



Barbary ape, 394, 395. 



Barbel, 68, 291. 



Barbus, 68. 



Barracuda (Sphyraena), 294. 



Barramunda, 103. 



Barriers affecting migration, 41. 



Bascanium, 323, 324. 



Basilisk, 317. 



Bass (Labrax), 294. 



Bassalian province, 299. 



Bassaris, 390. 



Bathmoceras, 192. 



Bathyactis, 110, 243. 



Bathycrinus, 111. 



Bathyergus, 357. 



Bathygnathus, 160. 



.Bathyophis, 298. 



Bats, distribution of, 349. 



Battocrinus, 151. 



Bear, 4, 27, 389. 



Beaver, 360, 364, 365. 



Bee-eater, 87, 94, 106. 



Bees, 279, 284. 



Beetles, 150, 279, 280, 283, 284. 



Belemnitella, 168. 



Belemnites, 137, 156, 168, 268. 



Belemnosepia, 138, 166. 



Belideus, 99, 100. 



Bell-bird, 78. 



Bellinurus, 278, 279. 



Bellows-fish (Centriscus), 295. 



Beloteuthis, 166. 



Beluga, 344. 



Bermudas, birds of the, 48, 51. 



Bernissartia, 329. 



Beroe, 240, 



Beyrichia, 272. 



Beryx, 294, 303. 



Bibos, 379. 



Big-horn, 379. 



Birds, American, common to Europe, 

 46 ; European, common to Amer- 

 ica, 48 ; dispersal of, 45 ; migra- 

 tions of, 47 ; oceanic journeys 

 of, 47 ; Arctic, 70 ; geological dis- 

 tribution of, 330 ; of the Holarctic 

 realm : of the Eurasiatic division, 

 65 ; of the North American, 66 ; 

 of the Neotropical realm, 77-79 ; 

 of the Ethiopian realm, 87, 88 ; 

 of the Oriental realm, 94, 95 ; of 

 the Australian realm, 100-102; 



