244 
BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 
1736. Riley, C. V.—Continued. 
8. Number of annual generations. 
Prevailing general belief erroneous, 21—Early generations often 
overlooked, 22—Also often exterminated by natural enemies, 
22—At least seven annual generations in southern portion of 
belt, and probably more, 22. 
9. Migrations and power op flight of the moth .,. 
The moth has great power of wing, 23—It flies many hundreds 
of miles north of cotton belt, 23—Appearance of the worm on 
cotton first planted great distances from any other cotton thus 
accounted for, 23—Migrating habit developed only in later 
rhontlis when they become numerous, 24. 
10. Hibernation .. 
Different opinions and*beliefs, 24—Difficulty surrounding the 
question, 24—Erroneous conclusions easily drawn, 25—Fallacy 
of the belief that the chrysalis winters underground, 25-26— 
Ability of the moth to survive the winter, 26—Other moths 
easily mistaken for it, 27—Theory of annual introduction of 
the species from some exotic country, 28—Arguments for and 
against the theory, 29, 30—Hibernation of the moth in the 
southern portion of the belt substantiated, 30—But a very 
small proportion of those which abound in the fall live to per¬ 
petuate their kind the next spring, 31—Localities where the 
moth hibernates, 31. 
11. Natural enemies. 
Vertebrates... 
Quadrupeds, birds, and reptiles that feed upon the worm, 32— 
Introduction of English sparrow, 33. 
Invertebrates.I. 
Predaceous insects. 
Wasps, ants, and other Hymenoptera, 34—The good work of 
ants, 34—How they are drawn to a cotton-field by the aphides, 
34—Beetles which prey upon the worm and others which pre¬ 
sumably do so, 35—Enemies among the half-winged bugs or 
Heteroptera, 36—Among two-winged flies or Diptera, 36— 
Among nerve-winged insects or Neuroptera, 37. 
Parasites. 
Previous belief that none preyed on Aletia, 38—Infesting the 
egg, 38—Infesting and issuing from the worm, 39—Flesh flies 
and Tachina flies, differences between them, 40-42—Issuing 
from the chrysalis, 42—A parasite known but not named in 
1852—Ten distinct parasites infesting Aletia, and two other 
undetermined species, 47. 
12. Remedies: Means of coping with the insect..-_ 
Favorable showing as to what has been accomplished in the 
South since the war, 48. 
Prevention. 
Modes of cultivation, 48—Topping, 48—Use of early varieties, 
48—Isolating fields, 48—Diversified agriculture, 49—Rotation 
of crops, 49—Protection of natural enemies, 49—Early vs. late 
planting, 49—Interspersing corn with cotton, 49—Jute, 49. 
Mechanical means of killing the worms. 
Simple methods of brushing and dragging, 50. 
Machines for brushing off the worms.. 
