3 So 



ANIMAL COMMUNITIES 



Atmometer, 162, 164. 



Atmosphere: 159; composition, 59; 



evaporating power, 159-62, 248-50; 



currents in, 161. 



Back-swimmers, 65,90, 117, 123, 132, 135, 



148, 151, 155. 

 Bacteria: denitrification, 66; nitrifying, 



66; nitrogen-fixing, 66; number and 



age of ponds, 68; number and quantity 



of life, 66; soil, 159. 

 Bacteria, scientific names: 

 — Azotobacler, 66. 

 — Bacterium actinopelk, 66. 

 — Clostridium, 66. 

 — Nitrobacter, 66. 

 — Nitrococcus, 66. 

 — Nitrosomonas, 66. 

 Badger, 15, 167, 288. 

 Balance in nature: 17-18; restored after 



the rise of a pest, 18; after disturbance 



in water, 71. 

 Bark beetle: destroyer, 195; habits on 



tamarack, 195; on pine, 228. 

 Bass, black: 22, 23; large-mouthed, 70, 



71, 85, 115, 120, 126, 127, 141, 156; 



rock, 85, 99, 119; small-mouthed, 85, 



99, 119, 120; warmouth, 130, 142, 



156. 

 Bear, black, 14, 15, 201, 237, 245. 

 Beaver, 15, 101, 199. 

 Beech woods, 158, 242-52. 

 Beetles, aquatic: brook, 78, 93, 96, 98, 



101, 102, 104, 118, 121, 123; preda- 



ceous diving, 65, 90, 102, 104, 121, 131, 



i$$i I 5 I > water scavenger, 65, 104, 



131, 151, 185. 



Beetles, aquatic, scientific names: 

 — Agabus, 90 : 



semipunctatus, 151. 

 — Aphodius fimetarius, 185. 

 — Chrysomelidae, 132. 

 — Coptotomus inter rogatus, 135. 

 — Cybister fimbriolatus, 149. 

 — Dascyllidae, 179, 185. 

 —Donatio,, 65, 123, 135, 151. 

 — Dytiscidae, 65, 102, 104, 131, 151, 185. 

 — Elmis, 121: 

 ' fastiditus, 93, 118. 



4-notatus, 123. 



quadrinotatus , 104. 

 — Haliplidae, 65. 



— Hydro philidae, 65, 104, 131, 151, 185. 

 — Hydro porus, 90: 



mellilus, 102. 



vittatus, 121. 

 — Parnidae, 78, 96, 98, 101, 102. 



— Psephenus, 78, 96. 



Beetle: bark, 195, 228; boring, 191, 206, 

 217, 240; click, 234, 255, 282, 297; 

 ground, 167, 179, 180, 185, 186, 190, 

 217, 205, 206, 272, 243; lady, 167, 

 293; May, 167, 290; relation to moist- 

 ure, 247; snout, 223 238, 282, 284; 

 soldier, 167. 

 Beetles, terrestrial, scientific names: 

 — Acmaeodera pulchella, 297. 

 — Acropterys gracilis, 277. 

 — Alans: 



myops, 255. 



oculatus, 253. 

 — Allopoda lutea, 207. 

 — Amara: 



angustata, 296. 



polita, 204. 

 — Anisodactylus inter punctatus, 218. 

 — Anthophilax attenuatus, 245. 

 — Paris confinis, 204. 

 — Bassareus lativittis, 258. 

 — Bembidium, 185, 198: 



car inula, 179, 180, 186. 



variegalum, 186. 

 — Boletobius cinctus, 261. 

 — Boletotherus bifurcus, 244, 261. 

 — Brachybamus electus, 204. 

 — Buprestidae, 191, 201. 

 — Calalhus gregarius, 217. 

 — Callida punctata, 276, 277. 

 — Calligrapha, 267: 



multipunciata, 188, 207. 



scalaris. 241, 260. 

 — Cardiophorus cardisce, 255. 

 — Cerambycidae, 191, 206, 217, 240. 

 — Ceruchus piceus, 253. 

 — Chalepus: 



homii, 188. 



nervosa, 207. 



scapularis, 208. 

 — Chelymorpha argus, 277. 

 — Chlaenius aestivus, 296. 

 — Chrysochus auratus, 284, 297. 

 — Cicindela: 



cuprascens, 180, 186, 219. 



formosa generosa, 225, 226, 252. 



hirticollis, 179, 180, 186, 219, 221, 



315. 



lepida, 40, 120, 223, 252, 316. 

 purpurea limbalis, 40, 210, 211, 212, 

 213, 254, 302. 

 repanda, 181, 186. 

 saulcyi, 315. 



scutellaris lecontei, 40, 182, 227, 229, 

 230, 252, 316. 



sexguttata, 41, 215, 216, 234, 254, 

 256, 316. 



tranquebarica, 182. 

 — Cleridae, 194. 



