344 



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: 

 Azotobacter, 66. 

 Bacterium actinopelle, 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, 



*35> I 5 I > water scavenger, 65, 104, 



131, 151, 185. 



Beetles, aquatic, scientific names: 

 Agabus, 90 : 



semipunclatus , 151. 

 Aphodius fimetarius, 185. 

 Chrysomelidae, 132. 

 Coptotomus interrogates , 135. 

 Cybister fimbriolatus , 149. 

 Dascyllidae, 179, 185. 

 Donacia, 65, 123, 135, 151. 

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

 Elmis, 121: 



fastiditiis, 93, 118. 

 4-notatus, 123. 

 quadrinotatus , 104. 

 Haliplidae, 65. 



Hydrophilidae, 65, 104, 131, 151, 185. 

 Hydroporus, 90: 

 mellitus, 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. 

 Acrapleryx gracilis, 277. 

 Alaus: 



myops, 255. 



oculattis, 253. 

 Allopoda lutea, 207. 

 A mar a: 



angustata, 296. 



polita, 204. 



Anisdactylus inter punctatus, 218. 

 Anthophilax attenuatus, 245. 

 Bans confinis, 204. 

 Bassareus lativittis, 258. 

 Bembidium, 185, 198: 



carinula, 179, 180, 186. 



variegaium, 186. 

 Boletobius cinctus, 261. 

 Boletotherus bifurcus, 244, 261. 

 Brachybamus electus, 204. 

 Buprestidae, 191, 201. 

 Calalhus gregarius, 217. 

 Callida punctata, 276, 277. 

 Calligrapha, 267: 



multipunclata, 188, 207. 



scalaris, 241, 260. 

 Cardiophorus cardisce, 255. 

 Cerambycidae, 191, 206, 217, 240. 

 Ceruchus piceus, 253. 

 Chalepus: 



hornii, 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. 

 pur pur ea limbalis, 40, 210, 211, 212, 

 213, 2 54, 32. 

 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. 



