INDEX. 301 



r M... 



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, Ery throneura 260 



galbanatus, Chlorolettix 222 



gammaroidea, Driotura 165 



geometrica, Kolla 90 



gleditschise, Macropsis 76 



gothica, Cicadella 87 



Geographical distribution 30 



Graphocephala 93 



coccinea 94 



Key to species 93 



versuta 95 



Gypona 101 



cinerea 105 



Key to species 102 



melanota ' 103 



octo-lineata 



pectoralis 104 



puncticollis 



Gyponinse 100 



Key to genera 100 



hartii, Kolla 91 



Hecalus 116 



bracteatas 



Key to species 



lineatus 117 



Helochara 



communis ' 



Hibernation 



hieroglyphica, Cicadella 



Homalodisca 



triquetra 



Hopperburn 



Hymetta 



trifasciata **< 



Idiocerus 



alternatus 



cratsegi 



duzeei 



fitchi 



Key to species 



moniliferae 



nervatus 



pallidus 



provancheri 



ramentosus 



snowi 



nituralis 



verticis 'OKI 



illitoiensis, Erythroneura 



