INDEX. . 153 



Page. 



Ennyomma clistoides. (See Myiophasia senea.) 

 gloljosa. (See Myiophasia senea.) 



Entomophthora spJiaerosperma, fungous enemy of Phytonomus nigrirostris 11-12 



Erax varipes, enemy of Hemileuca olivix 92 



Erigeron canadensis, food plant of Aphis maidi-radicis 102 



middletoni 98, 114, 116-119 



ramosus, food plant of Aphis middletoni 1 14, 116 



root-aphis. (See Aphis middletoni.) 



Bpp.j food plants of Aphis middletcm i 113 



Erioptera graphica, aquatic in early stages 120 



Erirhinus riridis, bibliographic reference 12 



^Phytonomus nigrirostris 2 



Eupelmus, undescribed species, parasitic on Chalcodermus xneus 145 



Euphagus cyanocephalus, enemy of Tipulidse 129 



Euphorocera claripennis, parasite of Hemileuca olivine 92 



Eurytomid parasite of Chalcodermus seneus 1 45 



Fertilizers against corn root-aphis 106 



Finch, Aleutian rosy. (See Leucosticte §riseonucha .) 

 lazuli. (See Cyanospiza amozna.) 

 Lincoln. (See Melospiza lincolni. 

 Fire. (See Burning.) 

 Fleabane. (See Erigeron canadensis.) 

 Flicker. (See Colaptes auratus.) 

 Flycatcher, Acadian. (See Empidonax rirescens.) 

 crested. (See Myiarchus crinitus.) 

 least. (See Empidonax minimus.) 

 Traill. (See Empidonax trailli.) 

 western. (See Empidonax difficilis.) 

 Wright. (See Empidonax vrighti.) 

 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 Tipulidse 130 



Gallinago delicata, enemy of Tipulidse 129 



"Gallinippers," name for adult Tipulidse 119 



Geothlypis trichas, enemy of Tipulidse 130 



GnapJialium purpureum, food plant of Aphis maidi-radicis 103 



Grackle, purple. (See Quiscalus quiscula. i 

 Grass, buffalo (see also Buchloe dactyloides). 



destruction by Hemileuca oliviat 61 



bunch. (See Sporobolus airoid* s. 

 crab. (See Digitaria sanguinalis. I 



food plants of Tipula bicorn is TJO 



simplex [21 



foxtail or pigeon. (See Setaria glauca and S. viridis. | 

 grama (see also Bouteloua oligostachya). 



destruction by Hemileuca olivise (i I 



hairy mesquite. (See Bouteloua hirsuta). 



Grasses fed upon by Hemileuca oliviat jrg 



probable food plants of Sitones hispidulus 36-37 



Grazing pastures and hay fields to dot toy "meadow maggots" 131 



Ground-beetle, slender seed-corn. (See Clivinu imprcssifrons.) 



