LIST OF ILLUSTRATIONS 



xvii 



-Anemone, Anemone cylindrica 



-Columbine, Aquilegia canadensis 



-Lupine, Lupinus perennis 



-Rock Cress, Arabis lyrata 



-Hoary Pea, Tephrosia virginiana 



-Bush Clover, Lespedeza capitata 



-Wild Geranium, Geranium carolinianum 



-Flowering Spurge, Euphorbia corollata 



-Bird's-Foot Violet, Viola pedata 



-Butterfly Weed, Asdepias tuber osa 



-Arrow-leaved Violet, Viola sagittata 



-Louse wort, Pedicidaris canadensis . 



-Wild Bergamot, Monarda fistulosa 



-Blazing Star, Liatris spicata . 



-Mixed Oak Association . 



-Oaks of Chicago Area 



-Water Beech, Carpinus caroliniana 



-Yellow Lady's-Slipper, Cypripedium parvijlorum 



-Hepatica, Hepaiica triloba 



-May Apple, Podophyllum peltatum 



-Wild Geranium, Geranium maculalum 



-Canada Violet, Viola canadensis . 



-Long-Spur Violet, V. rostrata 



-Rattlesnake Root, Prenanthes alba 



Chapter VIII 



-Species of Tiger Beetles .... 

 -Termites or White Ants, Termes flavipes 

 -Sand-colored Spider, Trochosa cinerea . 

 -The Searcher and Fiery Hunter, Calosoma scrutator 



C. calidum 



-A Digger Wasp, Microbembex monodonta 



-The Bee Fly, Exoprospa 



-Willow-Leaf Beetle, Disonycha quinqueviltata 



-Snout Beetle, Sphenophorus 



-Nest Holes of Bank Swallows .... 

 -Maritime Locust, Trimerotropis maritima . 

 -Mottled Sand Locust, Sparagemon wyomingianum 

 -Long-horned Locust, Psinidia fenestralis 

 -Lesser Migratory Locust, Melanoplus atlanis 

 -Narrow-winged Locust, M. angiistipennis . 



and 



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