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 rV. The forest associations 122 



1. Introduction - 122 



2. Dry upland (Querous and Cory a) forest association 124 



3. Artificial glade community in lowland forest 125 



4. Humid lowland (hard maple and red oak) forest association. . . . 126 

 6. Animal association of a temporary stream 127 



V. Relation of the deciduous forest invertebrates to their environment. . . . 128 



1. Forest soil community 129 



2. The forest fungus community 135 



3. The forest undergrowth community 138 



4. The forest crown community : 139 



5. The tree-trunk community 142 



6. The decaying wood community 148 



7. Interrelations within the forest association - 157 



Ecologically annotated list: — 



I. Prairie invertebrates 158-201 



II. Forest invertebrates 201-238 



Bibliography 239-264 



