398 



ZOOLOGY 



83 ; food of, 82 ; spinning habits of, 



82. 

 Argouauta, 172. 



Arion, 162. 



Ark shells, 162. 



Armadillo, 323. 



Army ants, 37. 



Army worm, 28. 



Arthrogaster, 92. 



Ascaris, 151. 



Asilidae, 66. 



Asiphonata, 178. 



Asp, 277. 



Asparagus beetle, 56. 



Assassin bug, 12. 



Astacidse, 124. 



Astacus, 97-99, 113. 



Astartidae, 190. 



Asterias, 197 ; distribution of, 192, 197. 



Asteriodea, 197, 203. 



Astrangia, 216. 



Atoll, 217. 



Attus, 91. 



Auriculidre, 161, 166, 176. 



Autolytus, 147, 159. 



Aviculidas, 185. 



Axolotl, 258, 260. 



B 



Baboon, 330. 



Badger, 328. 



Balauinus, 53. 



Balanoglossus, 250, 251. 



Balanus, 129. 



Bald eagle, 298. 



Baltimore oriole, 293. 



Banded horse-fly, 66. 



Bark-borer, 53. 



Barnacles, 102; habits of, 129. 



Barn-swallow, 292. 



Barrier reef, 217. 



Bat, 329 ; food of, 329. 



Batrachia, 254. 



Batrachus, 236. 



Bears, 328. 



Beaver, 310. 



Beaver parasite, 56. 



Bee-moth, 29. 



Bees, 30, 31, 42 ; swarming, 32. 



Beetle, 44; development of, 44; eco- 

 nomic importance of, 57 ; food of, 

 56 ; larval habits of, 45 ; number 

 of species of, 45. 



Bell-hydroid, 209. 



Belted kingfisher, 300. 



Birds, 281 ; economic importance of, 

 311 ; extinct, 313; flight of, 310; pro- 

 tection of, 312; migration of, 309; 

 teeth of, 314. 



Bird's-nest, edible, 303. 



Bittern, 305. 



Black-fly, 66. 



Black lobster, 103. 



Black moccasin, 279. 



Black snake, 276. 



Blattidre, 8, 14. 



Blister-beetle, 57. 61. 



Blow-fly, 61. 



Blue, 22. 



Bluebird, 285. 



Bluejay, 295. 



Boa, 276. 



Bobolink, 294. 



Boll-worm, 28. 



Bomb us, 31. 



Bombycidrc, 24, 42. 



Bombyx, 24. 



Bonasa, 304. 



Bony fishes, 252. 



Bosminid*, 131. 



Bot-flies, 64, 72. 



Botryllus, 250. 



Bougainvillea, 211. 



Bowfin, 248. 



Box tortoise, 275. 



Brachiopoda, 127, 130. 



Braohycera, 61, 63. 



Brachyura, 107. 



Branchipus, 127, 130. 



Brittle-stars, 198. 



Brook sucker, 241. 



Brown creeper, 288. 



Bruchidse, 57. 



Bryozoa, 141, 217. 



BucciuidsB, 175. 



Buck-beetles, 54. 



Budding, 217. 



Buffalo gnat, 66, 72. 



