INDEX. 



All scientific names of less than family rank are italicized. 



Black face numerals indicate the pages where will be found the chief tasonomic or 

 other discussion of the subject Indexed. 



Abbott, 167. 171. 



Abyssinia, 291, 351. 



acknowledgments, 233. 



Acris, 375, 422. 



Acria gryllus, 206, 2S4, 347, 394, 427. 



Africa, 44, 45, 50, 60, 61, 70, 73, 148, 150, 

 234, 237, 244, 272, 273, 274, 278, 279, 

 281, 285, 286, 292, 293, 295, 309, 310, 

 333, 334, 337, 339, 346, 349, 353, 362, 

 370, 464, 465, 468 ; entrance of Bufo, 

 363 ; Heleophryne, 367 ; paleogeographic 

 connections, 296 et seq., 339, 341, 873. 



Agalychnia callidryas, 394. 



hclenae, 216, 280, 347, 394. 

 moreletii, 217, 281, 347, 394. 



Alaska, 162, 164, 181, 188, 277, 282, 334, 

 345, 346, 348, 363, 386, 447. 



Alaskan Islands, 297. 



Aleutian Peninsula, 297. 



Algeria, 44, 144, 279, 334. 



Alicante Province (Spain), 161. 



Alloknagik, Lake, 164. 



alveoles, 8. 



Alytes, 360, 441. 



Alytes obstetricans, 147, 279, 333, 392. 



Amani, 30. 



Amatitlan, Lake, 97. 



Amazon River, paleogeography, 296, 298, 

 300-305. 



Amhlystoma, see Ambystotna. 



Ami y stoma: 



tnaculatum, 390, 426. 



opacum, 390, 426. 



tigrinum, 11, 273, 308, 390, 426. 



Amiystominae, 273, 390. 



America, 291, 293. 



American Museum of Natural History, 3, 

 359, 449 ; Congo Expedition, 61. 



amitosis, 268, 269. 



Amoeba, 380. 



Amoeba proteus, 10, 267. 



AmphignatJiodontinae, 5, 291, 308. 



Andre, 420, 428, 440, 441. 



Andrews, 2. 



Anoplophrya, 27, 433, 436, 444, 459. 



Antarctica, 298 et seq., 318. 330, 331, 362, 

 375, 386, 445, 447. 



Antilles, see West Indies. 



Anura, barred by ealt water, 379 ; con- 

 vergence in, 330; distribution of, 271 

 et seq., 358 et seq., 446, 447 ; dominant 

 and waning groups, 376; infection (mul- 

 tiple), 429, 430; Infection (percentage 

 of) 425, 426 ; Opallnids of, 391 ; origin 

 of, 358 et seq. ; paleontology, 376 ; 

 rapidity of spreading, 377, 378. 



Arcella, 268. 



Archihelenis, 301. 



Archiplata, 296. 



Arctogea, 307, 375. 



Argentina, 98, 275, 327, 364, 368, 386. 



Ari^ge, 228. 



Arizona, 27, 134, 198. 213, 221, 275, 281, 

 284, 347, 348. 



Arldt, 296-306, 317, 332, 341, 360, 362, 

 365, 371, Sf^5, 386. 



Ascaphus, 287, 360, 375. 



Ascaphus truei, 360, 392. 



Asia, 48. 49. 83, 84, 117, 137, 141, 145, 

 146, 155, 156, 159, 161, 165, 167, 171. 

 176, 231, 232, 238, 239, 242, 272, 277- 

 281, 283, 284, numerous references 287- 

 390, 392, 395, 400, 402-404, 410, 412, 

 413, 415-^17, 419, 420, 423, 424, 464, 

 465, 468. 



Astoma, 431, 432. 



Astomata, 28, 137, 248, 433, 439, 444. 



Astylosternus robustus, 411. 



Atelnpus, 423, 424. 

 gracilis, 409. 



stelzneri, 93, 275, 327, 409. 

 varius, 88, 91, 275, 327, 409, 430. 



Atlantic Ocean bridges, 296 et seq., 312, 

 321, 373, 382. 386, 447. 



Auburndale, 151, 211. 



Australasia, 362, 375. 



Australia, .">6, 37, 53, 56. 58. 68, 115. 136, 

 272-275, 289, 291-294, 309, 310, 327. 

 335, 351. 362, 365, 368; no multinu- 

 cleated Opallnids, 352 ; paleogeography, 

 298 et seq., 330, 331. 



Austria, 38, 230, 274, 283, 348. 



Aux Plains River, 181. 



Awerinzew, 1, 30, 33, 418, 441. 



Axes of body and nuclei, 17, 160. 



Bahia Solada, 129, 236. 



471 



