INDEX TO SPECIES. 



PAGE. 



Chrysops 32 



brunneus 34 



callidus .35 



celer 36 



fallax 36 



flavidus 37 



frigidus > 37 



indus 38 



lugens 39 



moechus 39 



moerens 40 



montanus 40' 



niger 41 



obsoletus 42 



sackeni 42 



striatus 43 



univittatus ... 44 



vittatus 44 



•Goniops 45 



chrysocoma 46 



Pangonia 45 



rasa 45 



PAGE. 



Tabanus 46 



atratus 48 



bicolor 48 



carolinensis 49 



cerastes 49 



costalis 50 



epistatus 51 



giganteus 51 



lasiophthalmus 51 



lineola 51 



longus 52 



nivosus 52 



ohioensis 53 



pumilus 53 



reinwardtii 54 



stygius 54 



sulcif rons 54 



superjumentarius 55 



trimaculatus 55 



variegatus 56 



venustus , 56 



vivax 56 



