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There seeins no hope, therefore, of finding a variety of cotton that will 
not be attacked by it. 
If the weevil has another, an original food plant, as it must have 
unless it has always fed on cotton, it will probably be found in the 
Monclova region of Coahuila. No wild malvaceous plant could be 
found in the regions visited, and the insect was not found on any other 
plant than cotton. Information obtained from Monclova by Don Jesus 
R. Rios, and communicated to me by letter, states that the insect has 
never been known there on any other plant. 
Oviposition. — The weevils deposit their eggs first in the buds, which 
are to be found within the squares. When the buds are all infested, 
the females oviposit in the smallest bolls, then in the next largest, 
until all are attacked that are still green. Judging from the egg-laying 
habits of the genus, the female makes the hole in the bud or boll with 
her beak, and then turning around, applies the tip of the abdomen to 
the hole and deposits an egg therein. The same female may deposit a 
considerable number of eggs. 
Appearance of an infested field. — As the weevils attack first of all 
the buds within the squares, these usually die and drop off. Therefore 
as soon as a field becomes well infested the presence of the insect can 
be told at once by the fact that few or no blooms are to be seen on the 
plants. A field may be in full bloom, but as soon as the insect gets 
well spread over it and accomplishes its work hardly a bloom will be 
seen. Soon after the squares are attacked they mostly turn yellow 
and fall to the ground. 
Method of .hibernation. — In one or two localities, during spells of cool 
weather, I was able to make some observations on the hibernation of 
the insect. 
It seems probable that a considerable percentage of the weevils win- 
ter over in the bolls, in the cells which they have formed therein, either 
as transformed weevils or as pupae, or perhaps even as larvae. That 
they may sometimes winter as larvae seems proven from the finding, 
as above mentioned, of very small larvae from the last of November 
to the middle of December. They x>robably winter more frequently as 
pupae, the latter having been found in the bolls as late as any examina- 
tions were made, i. e., up to the middle of December. Newly trans- 
formed adults were found plentifully in the bolls also during the 
whole time of my investigations. 
But there are many other individuals belonging to earlier broods 
which have issued and certainly will not reenter the bolls to hibernate. 
The question is, where do these hibernate? In San Juan Allende, 
where the fields are irrigated, there are many cracks in the earth, 
caused by the rapid drying of the soil after irrigating. On a cold day 
there I found that some of the weevils had crawled into these cracks, and 
I think there is no doubt that many weevils crawl into them and under 
clods of earth, under leaves, and other refuse to hibernate. I found 
