BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 
337 
2343. Riley, C. V.—Continued. 
Chapter II—Continued. 
7— Habits of worm at different stages, 7—Jumping habit, 7— 
Only known to feed on cotton and one another, 8—Odor of the 
worm, 8—Migrations of worm, 8—Method of pupation, 8— 
Formation of cocoon, 8—The worm never burrows in the ground, 
8— Distinctive characters of the chrysalis, 9—Duration of chrys¬ 
alis state, 9—Distinctive characters of the moth, 9—Sexual dif¬ 
ferences in the moths, 9—Different habits of the moths at night 
and by day, 10—Their strong flight, 10—Their position at rest, 
10—How soon the female begins to lay, 10—Her prolificacy, 10— 
Food of the moth, 10—It injures fruits, 11—Structure of the 
tongue, 11—Mention of other Noctuidce which injure fruits, 11— 
Time elapsing from one generation to another, 11—This will 
average about one month, 12—Time of year when the first 
worms appear, 12—Former opinions erroneous, 12—Dates of 
earliest appearance variable, 12—Worms of all sizes found in 
Florida and southern Georgia in the latter part of March, 12— 
First worms always few and scattered, 12—They multiply and 
spread irregularly, 12—Their progress governed by the season 
and latitude, 13—The third generation often called the first, 13— 
Number of annual generations, 13—There are at least seven in 
southern Texas, 13—Gradual progress and succession of broods, 
14—The second generation exceptionally very injurious, 14— 
Why not usually so, 14—Extent of migratory flights of the 
moths, 15—Probable existence of northern food-plants, 15— 
Causes and seasons of migration, 15—Behavior of migrating 
moths, 15—The question of hibernation, 15—Different former 
opinions and beliefs concerning hibernation, 16—Discussion of 
these opinions, 16—The chrysalides are killed by a temperature 
below 22° F., 16—Parasited chrysalides can bear greater cold, 
16—Fallacy of the belief that the chrysalis winters under¬ 
ground, 16—Ease with which erroneous conclusions can be 
drawn from mistaken identity, 17—The chrysalis of Aspila vi- 
rescens mistaken for that of the Aletia, 17—Chrysalides of 
other cotton larvae found underground in abundance, 17—The 
chrysalis of Aletia killed by burial, 17—Ability of the moth to 
survive the winter, 18—Unreliability of most testimony as to 
the hibernation of the moth, 18—Other moths easily mistaken 
for it, 18 —Hijpena scabralis, 18 —Phoberia atomaris, 19— Leucania 
unipuncta, 19—Absence of testimony to the survival of the moths 
beyond March, 19—Theory of annual introduction of the species 
from some southern foreign country, 19—Statement and discus¬ 
sion of Grote’s arguments and of others in support of this theory, 
20—Arguments in favor of the hibernation of the moth, 21— 
Both immigration and hibernation may occur, 21—Summary of 
the evidence, 22— Aletia hibernates only as a moth and only in 
the extreme south, especially in Texas, 22. 
Chapter III: 
Past bistory of the cotton-worm in the United States. 
From 1793 to 1825, 23—Fron 1826 to 1846, 24—From 1847 to 1866, 
25—From 1867 to 1869, 26—From 1869 to 1872, 27—In 1872 and 
1873, 28—In 1873 and 1874, 29—In 1875 and 1876, 30—In 1877 and 
1878, 31—In 1879 and 1880, 32—In 1880 and 18^1, 33—History of 
remedies, 34—Hand-picking, and poultry, 34—Fires, 35—Other 
22 ENT 
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