INDEX. 107 



Page. 



Pentatoma ligata, hibernation 53-54 



history 23-24 



increase and decrease in numbers during the season 48-53 



incubation period of eggs, as related to temperature 35-37 



individual capabilities of destructiveness 55-57 



invertebrate enemies attacking adults 66 



eggs 64-65 



nymphs 65-66 



life history 29-41 



methods of study. 29 



longevity of adults collected in the field 32-33 



reared to maturity in the laboratory 33-34 



when deprived of food 34-35 



nymphs without food 40-41 



method. of attack of adults in feeding 46-47 



miscellaneous observations on feeding habits of adults 47 



molting of nymphs , 41 



nymphal stages, duration 39-41 



nymphs, description 27-28 



habits 41-43 



length of life without food 40-41 



life history 39-41 



molting 41 



on cotton bolls 12-13 



nature of injury 15 



oviposition. (See egg laying.) 



parasites attacking adults 64 



eggs 62-64 



nymphs 64 



period between maturity of adults and beginning of egg 



laying 29-30 



predaceous habits of adults, abnormal 47 



predatory enemies 64-67 



preventive measures 67-68 



proliferation of cotton bolls as result of attack 17-19 



proof of injury to cotton bolls 19-20 



rate of deposition of individual eggs 44 



reproduction 30-32 



seasonal history 48-54 



sexes, proportion 32 



temperature as related to activity of adults 35 



incubation of eggs 35-37 



monthly and daily rate of oviposi- 

 tion 30 



low, as affecting vitality of eggs 38 



sayi, as a cotton insect, general account 73-74 



association with Pentatoma ligata in the field 47 



hand-picked in cotton field in Mexico 70 



increase and decrease in numbers during the season 50-52 



on alfalfa 73 



serva=Euschistus servus 74 



uhlerif (See Plant-bug, Uhler's green.) 



Pentatomid bugs of the genus Euschistus injurious to cotton bolls 74-78 



