153 



Page. 

 Field corn, percentage injured by boll- 

 worm 22 



sparrow 115 



Fig 18 



Flicker 114 



Florida, injury by bollworm to early toma- 

 toes in 25 



Flowers of cotton, character of injury to. . . 70 



Food, choice of, by larvse . 71 



relation to larval growth 67 



Food habits, cannibalism 79 



carnivorous 80 



choice of different parts of 



cotton plant 77 



of moths 94, 95 



of newly hatched larvae 68 



preference of larvae for young 



fruit 72 



relative attractiveness of Up- 

 land and Egyptian co|;tons- . 71 



Food plants of bollworm 17 



Foreign countries, bollworm in 19 



Forelius maccookii : 108 



Freezing, effect of, on pupse 86 



Frontina aletise 123 



armigera 123 



frenchii 123 



Galeoscoptes carolinensis 115 



Garden vegetables, scarcity of eggs on . 48 



Generations, number of 98 



Genitalia of male 92 



Geographical distribution 13 



Geothylpis trichas brachydactyla 115 



Geranium 18 



Gladiolus 18 



Gluttony of moths 93 



Gonia capitata 123 



Grape 18 



Great-tailed grackle 115 



Grosbeak 115 



Ground cherry 18 



Growth of larvae during iustars 64 



Guiraca cserulea 115 



Habits of moths 93, 94 



newly hatched larvae 68 



Harpalus caliginosus Ill 



Hatching of eggs 50 



Head casts of larvae, sizes of 65 



Heart worm=bollworm 13 



Hellanthus sp 17 



Helicohia helicis 127 



Heliophila unipunctata 104 



Heliothis coiiferta-= Helioth is obsoleta 11 



inter jacens = Helioth is obsoleta 11 



obsoleta, var. fasca 12 



var. ha waiiensis- 12 



var. ochracea 12 



var. rubescens 12 



\»,r.umbrosa 12 



var. umbrosa, sub-var. eu- 



maculata 12 



pulverosa=H. obsoleta 11 



punctigera=H. obsoleta 11 



succinea= II. obsoleta 11 



umrbosus=H. obsoleta \ai 11 



uniformis = H. obsoleta 11 



Page. 



Hemp 18 



Hibernation of moths 104 



Hibiscus sp . . .* 17 



Homalodisca triquetra 35, 106 



Hordeum spp 18 



Horned toad 113 



Icteria virens i 115 



Icterus galbula 115 



spurius 115 



Ictinia mississippiensis 114 



Idaho, occurrence of bollworm in 29 



Illinois, destructiveness of bollworm in 28 



Increase in numbers during season 104 



Indian corn 17 



Indiana, destructiveness of bollworm in. . . 28 



Indigo bunting 115 



Ineffective methods of bollwerm control . . 132 



Infestation, progress of by generations 103 



during season 103 



Injury, character of, to corn 69 



cotton 69 



to early and late cotton compared. 74 

 Insects sometimes mistaken for the boll- 

 worm 105 



Instars, larval , description of 57 



Ipomoea commutata 17 



eggs laid on 47 



Japan, bollworm 20 



Jimson weed 18 



Johnson grass, eggs laid on 47 



Kafir corn 18 



Kingbird 114 



Laphygma frugiperda 106 



Largus cinctus 35 



Larva, description of stages 57 



Larvae, choice of food by 71 



color variation of 56 



effect of atmospheric conditions on 



growth 66 



temperature on 66 



growth during instars 64 



growth of, in relation to effective 



temperatures 67 



growth of, in relation to external 



conditions 66 



growth of, in relation to food 66 



habits of newly hatched 68 



' instars, duration of 63 



mortality of young individuals 78 



newly hatched, eating shells and 



eggs 51 



effect of external 



conditions on... 68 



number on a single cotton plant ... 78 



parasites of 119 



Late corn, planting of, in eastern part of 



cotton belt 32 



Lath yr us odoratus 18 



Leaves of cotton, character of injury to 70 



Leucania unipuncta. See Heliophila. 



Life cycle, length of 97 



history, summary of 40 



of larvae, length of, without food 67 



Lights, attraction of moths to 95 



Loss, extent of, caused by bollworm 25 



Lower Sonoran area, inj ury by bollworm in . 28 



