INDEX. 301 



extrusus, Euscelis 172 



fieberi, Dikraneura 237 



fitchi, Idiocerus 63 



fitchii, Thamnotettix 215 



flavescens, Empoasca 244 



flavicosta, Deltocephalus 153 



flavidus, Parabolocratus 122 



fraterna, Memnonia 109 



frontalis, Platymetopius 135 



fulva, Driotura gammaroidea var 166 



fulveola, Alebra albostriella var 236 



fulvidorsum, Phlepsius 205 



fumida, Erythroneura 260 



galbanatus, Chlorolettix 222 



gammaroidea, Driotura . . ." 165 



geometrica, Kolla 90 



gleditschise, Macropsis 76 



gothica, Cicadella 87 



Geographical distribution 30 



Graphocephaia 93 



coccinea 94 



Key to species 93 



versuta 95 



Gypona 101 



cinerea 105 



Key to species 102 



melanota 103 



octo-lineata 102 



pectoralis 104 



puncticoUis 105 



Gyponinse 100 



Key to genera . 100 



hartii, Kolla 91 



Hecalus 116 



bracleatas 117 



Key to species 116 



lineatus 117 



Helochara 92 



communis 92 



Hibernation 24 



hieroglyphica, Cicadella 85 



Homalodisca 79 



triquetra 80 



Hopperburn 19 



Hymetta *..... 246 



trif asciata 247 



Idiocerus 62 



alternatus 66 



crataegi 64 



duzeei 69 



fitchi 63 



Key to species 63 



moniliferse 65 



nervatus 70 



pallidus 68 



provancheri 64 



ramentosus 65 



snowi 64 



^uturalis 68 



verticis 67 



illin )iensis, Erythroneura 251 



