49(3 



intjej: 



Astar-us, 130 : fnorl, 133 ; geograpliiral 



clistril)utioii, 13(1 ; organs oi, l'2S. 

 Asterias, 251, -52. 

 Atoll, 277. 



Attached animals, a study of, 2G0. 

 Attida", IKJ. 

 Auriculidiv, 214. 

 Autolytus, 1S7. 

 Aviculida^, 23U, 235. 



B 



Baboon, 450. 



Bacteria, 70. 



Badger, 446. 



Balanoglossus, 293. 



Balfour, 469. 



Baltimore oriole, 405. 



Bark-borers, 71. 



Barnacles, 15S. 



Barrier reefs, 277. 



Basket fish, 2.54, 255, 



Bat, 92, 44,S. 



Beaker animals, 271, 



Bears, 446. 



Bea\'er, 446. 



Bedbug, 23. 



Bees, 49 ; dome.stication of, 427 ; 

 honey, 50 ; social, 49 ; swarming, 

 .50. 



Beetles, 60 ; development of, 62 ; 

 economic importance of, 74, 75 ; 

 food of, 61 ; geographical range of, 

 62 ; habitats of, 61 ; larval habits 

 of, 62. 



Behavior, animal, 208. 



Bell-animalcule, 288. 



Bell-hydroids, 267. 



Bilateral symmetry. 290. 



Binomial nomenclature, 463. 



Birds, 42(1; classes of, 390; domes- 

 ticated, 425: extinction of, 418; 

 flight of, 414 : migration of, 371 : 

 migration routes of, 372 ; muscular 

 system of, 388 ; nervous system 

 of, 389; organs of , 38.3-387 ; of 

 prey, 396 ; protection of, 417 ; 

 sense-organs of, 389 : stuch' of, 

 370; teeth of, 419. 



Bivalve Entomostraca, 157. 



Bivalves, 227. 



Blackbirds, 405. 



Black-flies, 83. 



Black rat, 430. 



Black snake, 365. 



Black Swallow-tail, 40. 



Blattidce, 17. 



Blind crayfish, 92, 97. 



Blindw^orm, 360. 



Blister iDeetle, 75. 



Blood-vessels, 2. {See also Circulation.) 



Bluebird, 413. 



Blue crab, 142 ; economic unportanee 

 of, 146. 



Blue jav, 404. 



Boa, 365. 



Bobolink, 406. 



Boll-worm, 45. 



Bombus, 49. 



Bomlivcidie, 39, 42. 



Bomln-x, 42. 



Bony fishes, 322. 



Boring Mollusca, 230. 



Bot-fly, 81. 



Botryllus, 293. 



Bougain^dllia, 269. 



Bowfin, 324. 



Box-tortoise, 363. 



Bracliiopoda, 180. 



Braehycera, 80. 



Brachj-ura, 140. 



Brain coral, 275. 



Brain, divisions of, 308. 



Branchiopod, 156, 160. 



Brittle-star, 253. 



Brook suckers, 317. 



Brown creeper, 413. 



Brown rat, 431. 



lirown-tail moth, 47. 



Bruehidie, 62. 



Br\^ozoa, 177 ; of estuaries, 225. 



Buck beetle, 72. 



Budding in corals, 277. 



BufTalo-bug, 61, 68. 



Buffalo-gnat, 88. 



Buffon. 466. 



Bufoni(Ue, 347. 



Bugula, 178. 



Bullfrog, 348. 



Bullhead, 317. 



Bumblebees, 49. 



Bupestida', 70. 



Burrowing habits, 168. 



Buthus, 116. 



Butterfly, 29 ; broods of, 34 ; devel- 

 ojiment of, habits and food of, 

 ;-)2 ; mimier>', 35 ; poljmiorphism, 

 34 ; protective resemblance, 35 ; 

 t\-jH's of, 40; wings of, 33. 



Byssus, 229. 



C 



Cabbage butterflies, 34, 40. 

 Callinectes, 142. 

 Calosoma, 64. 

 Cambanis, 132, 143. 



