412 



INDEX 



Lark, homed, prairie, 274 

 Texas, 280 



meadow, 135, 274 

 Lark bunting, 252, 253, 265 

 Lark sparrow, 112, 253 

 Larrea, 120, 281, 283, 292 



desert, 257 



tridentata, 244 

 Larvae, 305, 308 



dobson, 308 



eel, 319 



insect, 177 



midge, 306 



plumosus, 178 

 Lasmigonia complanata, 300 

 Law of minimum, 105 

 Law of toleration, 105 

 Layer societies, 245 

 Lazuli bunting, 265 

 Lecanium, 141 

 Leeches, 306 

 Lemming, 177, 183, 190, 195 



Norwegian, 184, 190 

 Lepidium perfoliatum, 293 

 Lepidoptera, 275 

 Leptinotarsa, 117 

 Leptochloa dubia, 282 

 Leptosynapta inhaerens, 333 

 Lepus, 257 



alleni, 125, 285 



californicus, 125 



califomicus californicus, 289 



californicus melanotus, 259 



richardsonii, 289 

 Lesions, 184 

 Leucichthys artedi, 307 

 Liatris, 272, 279 



punctata, 273 



scariosa, 273 

 Lichens, 76, 139, 140 

 Liebig's law, 105 

 Life cycles, 45 



Life form, 10, 48-55, 76, 229-230, 231, 

 252-254, 322 



bases, 49 



behavior and taxonomic, 54, 55 



biotic system, 50 



concept and significance, 48 



kinds, 48, 49 



marine, 50 



Life form, sedentary, 54 

 sessile, multiple-individual animals, 

 50-54 

 single-individual animals, 54 

 systems, 49, 50 

 vermiform, 54 

 Life habit, 55, 252-254, 312, 323 

 Life history, 28, 33-48, 172, 351 

 animals, 44-48 

 motile, 46-48 

 parasites, 45, 46 



sessile and sedentary animals, 44, 45 

 definition and significance, 33, 34 

 physiological, 44 

 plants, 36-44 

 community relations, 43, 44 

 dissemination, 42, 43 

 flower cycles, 41, 42 

 fruiting and seed production, 42 

 germination, 37 

 growth, 37, 38 

 movements, 38 

 number of stages, 36, 37 

 outline, 36 



period of flowering, 41 

 propagation, 38-40 

 relation to life form and habitat, 36 

 reproduction, 40 

 structure, 40, 41 

 relation to habitat, 35 

 sessile and motile organisms, 34, 35 

 Light, 70, 91, 92 



in fresh water, 296 

 Limnodrilus, 300, 306 

 Limnology, 16, 17 

 Limpets, 325, 328, 331 

 Ling, 307 

 Litter, 190 



Littoral communities, 16 

 Littorina, 325, 328 

 Balanus cariosus, 328 

 Balanus glandula, 328 

 scutulata, 325, 328 

 sitchana. 325, 328 

 Lizards, 133, 134, 135, 285 

 Lociations, 244 

 Locies, 248 

 Locust, 184, 203, 206 

 lubbery, 274 

 migrations, 198 



