INDEX. 153 



Page. 

 Ennyomma clistoides. (See Myiophasia senea.) 

 globosa. (See Myiophasia senea.) 



Entomophthora sphserosperma, fungous enemy of Phytonomus nigrirostris 11-12 



Erax varipes, enemy of Hemileuca olivise 92 



Erigeron canadensis, food plant of Aphis maidi-radicis 102 



middletoni 98, 114, 116-119 



ramosus, food plant of Aphis middletoni 114, 116 



root-aphis. (See Aphis middletoni.) 



spp. , food plants of Aphis middletoni 113 



Erioptera graphica, aquatic in early stages : 120 



Erirhinus viridis, bibliographic reference 12 



=Phytonomus nigrirostris 2 



Eupelmus, undescribed species, parasitic on Chalcodermus seneus 145 



Euphagus cyanocephalus, enemy of Tipulidae 129 



Euphorocera claripennis, parasite of Hemileuca oliviie 92 



Eurytomid parasite of Chalcodermus xneus 145 



Fertilizers against corn root-aphis 106 



Finch, Aleutian rosy. (See Leucosticte griseonucha.) 

 lazuli. (See Cyanospiza amcena.) 

 Lincoln. (See Melospiza lincolni.) 

 Fire. (See Burning.) 

 Fleabane. (See Erigeron canadensis.) 

 Flicker. (See Colaptes auratus.) 

 Flycatcher, Acadian. (See Empidonax virescens.) 

 crested. (See Myiarchus crinitus.) 

 least . ( See Empidonax minimus . ) 

 Traill. (See Empidonax trailli.) 

 western. (See Empidonax difficilis.) 

 Wright. (See Empidonax wrighti.) 

 yellow-bellied. (See Empidonax flaviventris .) 



Formica schaufussi, attendant on Aphis maidi-radicis . 105 



Fungous enemy of Phytonomus nigrirostris 11-12 



Sitones hispidulus , 37 



enemies of Tipulidae 130 



Grallinago delicata, enemy of Tipulidae 129 



' ' Gallinippers, ' ' name for adult Tipulidae 119 



Geothlypis trichas, enemy of Tipulidae 130 



Gnaphalium purpureum, food plant of Aphis maidi-radicis - 103 



Grackle, purple. (See Quiscalus quiscula.) 

 Grass, buffalo (see also Buchloe dactyloides) . 



destruction by Hemileuca olivise 61 



bunch. (See Sporobolus airoides.) 

 crab. (See Digitaria sanguinalis .) 



food plants of Tipula bicornis 120 



simplex 121 



foxtail or pigeon. (See Setaria glauca and $. viridis.) 

 grama (see also Bouteloua oligostachya) . 



destruction by Hemileuca olivise 61 



hairy mesquite. (See Bouteloua hirsuta). 



Grasses fed upon by Hemileuca olivise 79 



probable food plants of Sitones hispidulus 36-37 



Grazing pastures and hay fields to destroy ' ' meadow maggots " 131 



Ground-beetle, slender seed-corn. (See Clivina impressifrons .) 



