INDEX 



[All generic and specific names are in italics.] 



Aard-vark, 368, 453. 



Abalone shells, 235. 



Abdominal cavity, of Mammalia, 358. 



Abdominal pores, of Crocodilia, 325; of 

 Cyclostomata, 272; of Dipnoi, 297; of 

 Selachii, 278 ; of Teleostei, 287. 



Abdominal scutes, 315. 



Abiogenesis, 496, 499. 



Acanthia lectularia, 210. 



Acanthocephala, 124. 



Acarina, 184. 



Accipitres, 343. 



Acephala, 243. 



Acetabulum, of frog, 300. 



Acineta fcetida, 47, 50. 



Acipenser stitrio, 284. 



Acontia, 73, 76. 



Acquired characters, 460, 478; transmission, 

 of, 476. 



Acrania, 267. 



Acrid turn, leg of, 194. 



Acromion, of gorilla, 359. 



Actinocephalus oligacanthus, 34. 



Actinomma aster acanthion, 32. 



Actinophrys sol, 28. 



Actinozoa, 72. 



Adamsia palliata, 76. 



Adaptive gills, in Opisthobranchia, 238. 



Adder, 319. 



Adductor muscles, of Lamellibranchia, 244. 



Adelochorda, same as Enteropneusta, 259. 



Adhesive cells, of Ctenophora, 83. 



^Egitognathas, 353. 



Azolis papulosa, 238. 



/Epyorms, 438. 



Aerial fauna, 452. 



ALschtia cyanea, 199. 



^Esthetic emotions, 492. 



Afferent nerve, 482. 



African bat, 396. 



African elephant, 385, 453. 



African flying squirrel, 388. 



African gazelle, 384. 



African ostrich, 453. 



Afterbirth, of Mammalia, 362. 



Agassiz, Alexander, 511. 



Agassiz, Louis, 507. 



Age of fishes, 420. 



An bladder, same as swimming bladder. 



Air bladder, 283; of Dipnoi, 297; of 

 Ganoidei, 284; of roach, 286; of trout, 

 288. 



Air sacs, of birds, 334. 



Alaskan moose, 382. 



Albatrosses, 349. 



Albertus Magnus, 497. 



Alca impennis, 350, 351, 438. 



Alca (Utamania) torda, 351, 438. 



Alcedo ispida, 327. 



A Ices americana, 382. 



Alcyonaria, 77. 



Alder blight, 208. 



Allantois, 309, 311 ; of birds, 335 ; of Mam- 

 malia, 361. 



Alligator gar, 285. 



Alligator mississippiensis (litcius), 326. 



Alpaca, 382. 



Alpine fauna, 452. 



Alternation of generations, in Annelida, 138 ; 

 in Hydromedusae, 65; in Tunicata, 267. 



Altrices, 336. 



Alytes obstetricans, 306. 



Ambergris, 375. 



Amblystoma maculatum, 304. 



Ambulacral feet, 86. 



Ambulacral groove, 90. 



Ambulacral plates, 98. 



Ambulacral rafters, 91. 



Ambulacral system, 86. 



American elk, 383. 



American lion, 404. 



American orioles, 355. 



American otter, 399. 



American sable, 400. 



American sardine, 291. 



American vultures, 345. 



Amia calva, 285. 



Amiurus catus, 290. 



517 



