176 



Dissemination or spreading of weevils — Continued. Page. 



Gin agency at border line, spreading weevils 124-125 



Ginneries spreading weevils. See Gin agenc)^ at border line. 



Grain shipments transporting weevils. See Weevils buried among grains. 



Natural agencies 127-132 



Floods spreading weevils 127, 128 



Migration of weevils 128-132 



Defoliation of plants, effect upon weevil movement „ . . . 130-132 



Effect of leafworm work on weevil movement. See Defoliation 

 of plants, effect upon weevil movement. 



AVinds carrying weevils 127, 128 



Seed cotton shipments. See Shipments of seed cotton and cotton seed. 

 Seed for shipment, treatment of. See Treatment of seed for shipment. 

 Seed houses, weevils in. See Weevils in seed houses. 



Shipments of seed cotlon and cotton seed carrying weevils 125 



Treatment of seed for shipment 126-127 



Weevils buried among grains, duration of life 127 



Weevils in seed houses, occurrence of 124 



Distribution of boll weevil. See under General considerations. 



Enemies. See under Control, natural; Parasites; Predatory enemies. 



Falling squares. See under Life history; Oviposition. 



Flaring squares. See under Life history; Oviposition. 



Flight of weevils. See under Dissemination; Migration. 



Floods spreading weevils 127, 128 



Gelatin. See under Control, natural. 



General considerations 17-30 



Cotton production in north Texas 23 



Cotton production in Texas and Louisiana 24-25 



Destructiveness 21-25 



Distribution of boll weevil 27 



History 17-21 



Preface, with acknowledgments 13-15 



Prospects as to future spread and injury 28-30 



Territory affected at close of 1904 26 



Generations. See under Life history; Development. 



Gins. See under Dissemination; also Control, artificial; Machines. 



HeliotJds obsoleta, the bollworm 17 



Hibernation. See under Seasonal history. 



Identifying the boll weevil 41 



Insecticides. See under Control, artificial. 



Insects mistaken for the boll weevil 66-68 



Acallcs nobilis, attacks prickly pear 67 



Acalles turbidus, attacks prickly pear - 67 



Acorn weevils. See Balaninus, 3 spp. 



Anthonomus seneotinctus 67 



Anthonomus albopilosus 67 



Anthonomus poynorum, attacks apple 93 



Anthonomus scutellaris, attacks apples 67 



Anthonomus signatus, attacks various flower buds 67 



Anthribus cornutus, attacks stems of cotton 67 



Apple weevil. See AnUionomus scutelaris. 



Anecerus fasciculatus, attacks decaying bolls * 67 



Ataxia crypta, attacks cotton stems 67 



Balaninus nasicus, attacks acorns 67 



