182 THE MEXICAN COTTON-BOLL WEEVIL. 



Page. 

 Callirhoe (see also Mallow). 



buds, duration of life of boll weevils fed thereon 48 



involucrata, tested as food plant of boll weevil 32 



Cardinal. (See Cardinalis cardinalis.) 



Cardinalis cardinalis, enemy of boll weevil 146 



Careless weed. (See Euphorbia.) 



Castor bean plants, futility against boll weevil 155 



Cathartus gemellatus, enemy of boll weevil 138 



( 'atolaccus hunteri, enemy of boll weevil 141 



incertus, enemy of boll weevil 141 



Cerambycobius cushmani, enemy of boll weevil 141 



cyan iceps, enemy of boll weevil 141 



sp., enemy of boll weevil 141 



Chain cultivator, use against boll weevil 151 



Chalcodermus xneus attacks cowpea pods 30 



breeds in cotton squares 30 



mistaken for boll weevil 30 



Chat, yellow-breasted. (See Icteria virens.) 



Chauliognathus spp., enemies of boll weevil 137 



Chickadee, Carolina. (See Penthestes carolinensis.) 



China-berries attacked by Arsecerus fasciculatus 30 



Chondestes grammacus, enemy of boll weevil 146 



Chordeiles virginianus, enemy of boll weevil 146 



Climate, factor in boll-weevil control 120-132 



mortality 120-132 



Climatic conditions, factor in boll-weevil control 120-132 



influences on vitality and activities of boll weevil 121-122 



Cocklebur. (See Xanthium.) 



Coffee beans attacked by Arsecerus fasciculatus 30 



bean weevil. (See Arxcerus fasciculatus.) 



Cold, effect on boll weevil L9. 28 



Colinus virginianus, enemy of boll weevil L46 



Colors, attractiveness to boll weevil 43 



Conotrachelus elegans attacks galls and nuts of pecan 30 



mistaken for boll weevil 30 



erinaceus mistaken for boll weevil 30 



leucophseatus attacks stems of careless weed (Euphorbia) 30 



mistaken for boll weevil 30 



naso attacks acorns 30 



mistaken for boll weevil 30 



nenuphar (see also Plum curculio). 



attacks fruit of plums and peaches 30 



mistaken for boll weevil 30 



Convolvulus repens tested as food plant of boll weevil 32 



Cordyceps, fungous enemy of boll weevil 136 



Corn, duration of life of boll weevils fed thereon 48 



Cornstalks, hibernation shelter for boll weevil 101 



Cotton, American Upland, susceptibility to boll-weevil attack 45, 46 



baled, factor in dissemination of boll weevil 93 



bolls, duration of life of boll weevils fed thereon 49 



effect of feeding by boll weevil thereon 45 



old, attacked by Arsecerus fasciculatus 30 



pendent, indirect effect on boll weevil 135 



with thick walls, effect on boll weevil 136 



boll weevil. (See Boll weevil.) 



caterpillar. (See Alabama argillacea and Leaf worm.) 



Cuban, susceptibility to boll-weevil attack 45, 46 



destruction of stalks as a means of boll-weevil repression 157-158 



determinate growth, effect on boll weevil 135 



early bearing, effect on boll weevil 135 



maturing varieties as a means of boll-weevil repression 160-161 



planting as a means of boll-weevil repression 160-161 



Egyptian, susceptibility to boll-weevil attack 45. 46 



fall destruction of stalks in relation to survival of boll weevil from hiber- 

 nal ion 111-112 



fertilization as an aid to boll-weevil repression L60-161 



flowers attacked by Echthetopyga gossypii in Philippines 30 



