320 INDEX 



Page 



Amanitopis vaginata 56 



Amaranthus blitoides 92 



graecizans 92, 211 



retroflexus 92, 211 



Ambrosia artemisiaefolia 117, 208 211 



trifida 117 



Ambloplites rupestris *. . . 25, 26, 27, 247, 251 



Amblystegium riparium longifolium 42 



Ambyst oma jeffersonianum 22, 23, 257, 260, 261 



Ambystomidae ' 260 



Amelanchier canadensis 21, 70, 97 



oblongifolia 97 



rotundifolia 70 



spicata 31, 70, 97 



Ameiurus lacustris 27, 246, 248 



melas 24, 25, 26, 27, 246, 248 



natalis 25, 246, 248 



nebulosus 246, 248 



vulgaris 25, 26, 27, 246, 248 



Ampliibians 14, 257 



geographic relations of 257 



habitats of ♦. 259 



species, list of 261 



Amphicarpa monoica ' 41 , loO 



pitcheri ' 100 



Amia calva 25, 27, 246, 248 



Ammophila arenaria 21, 47, 69, 78, 183, 186, 192, 210, 225 



Amnicola cincinnatiensis 141, 170 



Hmosa 131, 134, 135, 136, 139, 140, 170 



lustrica 135, 136, 137, 170 



walkeri ..131, 137, 138, 170 



Amnicolidae 170 



Anaphalis margaritacea 116, 211 



Anaphothrips striatus 183, 184, 185, 186, 187, 189, 192, 200, 206, 208, 210, 



215, 216 



Anas platyrhynchos 274, 276 



rubripes ,27, 235, 239, 240, 274, 278 



Andromeda polifolia 43 



glaucophylla • 106 



Andropogon furcatus 76 



scoparius 71,76 



Ancylidae 167 



Ancylus fuscus 140, 167 



parallelus , 131, 134, 140, 141, 167 



Anemone canadensis 93, 208 



cylindrica 93 



quinqiiefolia 93 



virginiana 93 



Angelica atropurpurea 105 



Anguilla chrysypa 246, 250 



Antennaria canadensis 116 



dioica 116 



fallax 116 



Anthemis cotula 118, 182, 208, 211 



Anthothrips verbasci 183, 186, 187, 188, 189, 190, 191, 192, 198, 201, 202, 203, 204, 207, 



213, 216 



niger 183, 187, 189, 207 



Antrostomus vociferus 23, 274, 287 



Anodonta grandis 139, 140, 173 



gigantea 134, 135, 136, 173 



footiana 129, 1.39, 173 



marginata. 134, 136, 173 



Anodontoides ferussacianus modestus 140, 173 



ferussacianus subcylindraceus 129, 139, 140, 173 



