INDEX 



163 



Gull community, organization, 106, 



134 



Gypsy moth, 74 

 enemies of, 74 



Habitats, 5, 60 



affected by baseleveling, 86 



amphibians, 148 



animal, formed by plants, 89, 91 



animals classified by, 134 



ants, 137, 149 



beetles, 145 



bird preferences, 148 



birds, 137 



birds in summer, 146 



cave, 112, 143, 144 



classification, 59, 138, 139 



Collembola, 136 



crawfish, 116 



dune, 139 



fish of Illinois, 140 



formed by river floods, 145 



fresh-water, 86 



grasshoppers, 148 



history of their recognition, 138 



inland, 91 



insects, 128, 135 



invertebrate, 146 



lake, 87 



lake beach, 147 



lake fauna, 140 



lake, for fish, 147 



land, 86 



mammals, 145 



marine animals, 135, 136, 146 



marsh for mollusks, 137 



mollusks, 138, 145, 147 



mollusks, classification, 138 



mollusks of land and fresh water, 



classification, 138 

 moor, 139 



Oregon sea beach, 149 

 Orthoptera, 137 

 oyster, 111, 112, 131, 132 

 parasitic fauna, 129 

 pond, 148 



preferences of birds, 148 

 reptiles, 148 

 sand areas, 146 

 sand prairie, 139 



sandy sea flats, 136, 137 



sea bottom, 136 



shore animals, 139 



spiders, 125, 138 



stream, 147, 148 



three dimensions, 46 



Turbellarian, 127 

 Habits, 



Amphipods, 119 



Amphithoe longimana Smith, 113 



cave-inhabiting bats, 112 



Cicindelidse, 121 



fish, 63, 112 



formation in crawfish, 106 



formation in the turtle, 105 



Humble-bee, 118 



Leptinotarsa, 119 



mammals, 118 



mammals of North America, 107 



mating period of spiders, 115 



Plethodon, 117 



salamanders, 119 



solitary wasps of Texas, 113 



spiders, 117, 118 



squirrels, 115 



tortoises, 116 



Venus mercenaria, 114 

 Halictus, 



bioconose, 134 



guests and parasites, 134 

 Hearing in fish, sense of, 116 

 Heath ants, 149 

 Hemiptera, seasonal succession, 



141 

 Hemiptera-Heteroptera, catalogue 



of Nearctic, 71 

 Hibernation, 115 



influence on animal parasites, 

 130 



insects, 128 

 Holland, sandy flats of, animals, 



136, 137 

 Homarus Americanus, behavior of 



immature stages, 105 

 Homing pigeons, methods, 113 

 Honey-bee, natural history, 109 

 Horde, 132 



Human associations, 11 

 Human behavior, biological and 

 psychological foundations, 133 



