INDEX. 99 
Page. 
Cucumber, food plant of Diabrotica soror 71, 72 
trivittata 75 
vittata 82 
Cucurbitaceous plants, food plants of Diabrotica connexa 68 
Cucurbits, food plants of Diabrotica picticornis 76 
trivittata 75 
Cultivation in control of hop flea-beetle 58 
Currant, food plant of Diacrisia virginica 63 
Cyclas formicarius, larvae in sweet pototo 90 
Cymlings, food plants of Diabrotica picticornis 76 
Dahlia, food plant of Diacrisia virginica 63 
Daisies, food plants of Diabrotica soror 72 
Datana integerrima on pecan, prey of Euihyrhynchus floridanus 86 
Desmodium tortuosum, food plant of Diabrotica balteata 77 
Diabrotica balteata T 69-71, 76-82 
beetle, description 71 
comparison with Diabrotica connexa 68 
picticornis 69 
description of beetle and eggs 70-71 
early stages 81 
distribution 71 
egg, description 81 
food plants 77 
hardiness in comparison with Diabrotica duodecimpunctata 
and Diabrotica vittata 80 
injuries 69-70 
injury, character 77 
larva, mature, description 81 
newly hatched, description 81 
life-history notes 78-81 
pupa, description 81 
records of occurrence 77-78 
remedies, experiments 81-82 
biologic notes on species in southern Texas 76-84 
connexa, comparison with Diabrotica picticornis 69 
description, distribution, injuries 68 
duodecimpunctata, common injurious species in southern States. ... 67 
comparison with Diabrotica soror 73 
hardiness in comparison with Diabrotica balteata 
and Diabrotica vittata 80 
life-history notes 84 
economic importance of species 67 
picticornis, descriptions of beetle and eggs, distribution, injuries 68-69 
in southern Texas 76 
soror 71-75 
association with Diabrotica trivittata 75 
common injurious species in Pacific region 67 
description of beetle 73 
distribution .' 73 
habits 74 
injury in California, 1906-1908 71-73 
life history 74 
trivittata, comparison with Diabrotica vittata, injuries. 75 
