Page. 



Food habits 48 



Larval 49 



Adult 49 



Male 51 



Female 52 



Males and females together 52 



Feeding of hibernated weevils on early cotton 52 



Time hibernated weevils can exist on foliage before formation of 



squares 53 



Concentration of weevils upon most advanced plants 54 



Are weevils able to locate a food supply at any considerable distance? 56 



Danger from allowing seppa to grow 57 



Increase in leaf area of cotton 58 



Effects of feeding upon squares and bolls 59 



Destructive power by feeding 61 



Susceptibility of various cottons 61 



Has the weevil any other food plant than cotton? 64 



Insects often mistaken for the boll weevil 66 



Is cotton-seed meal attractive? 68 



Laboratory observations 68 



Field tests ' 69 



The possibility of baiting weevils with sweets 70 



Attractiveness of various sweets 70 



Attractiveness of sweets to hibernated weevils in laboratory 71 



Influence of sweetened water upon feeding of weevils on cotton plants... 72 



Field tests for hibernated weevils, using pure molasses 73 



Feigning death : 74 



Eeproduetion _ 74 



Method of making field observations upon work of weevils 74 



Fertilization 75 



Age of beginning copulation 75 



Sexual attraction and duration of copulation. 76 



Duration of fertility in isolated females 76 



Oviposition 77 



Age of beginning oviposition _ 77 



Examination of squares before oviposition 77 



Selection of uninfested squares for oviposition 78 



Laboratory observations _ 79 



Field observations _ 80 



Activity of weevils in different parts of the day 81 



Place of egg deposition 83 



Position of the weevil while puncturing for oviposition 83 



The act of oviposition 85 



Time required to deposit an egg 85 



Eate of oviposition — average, maximum 86 



Stimulating effect of abundance of squares upon egg deposition 87 



Eelation of warts to oviposition 88 



Effects of oviposition upon squares — flaring, falling 89 



Period of oviposition 90 



Original habit of depositing eggs mostly in bolls 90 



Does parthenogenesis occur? 91 



