STUDIES OP THE PINK BOLLWORM IN MEXICO 6 
reappeared since 1917. In 1922 there was no recurrence in the 
large Trinity Bay area, where all or parts of seven counties were found 
infested in 1917. 
In extreme western Texas and New Mexico, conditions have pre- 
vented any attempt toward eradication. The infestation is being 
controlled, however, by quarantines, the disinfection of all cotton- 
seed, and other means, so that it is still at a low ebb and the danger 
of spread from this area to other parts of the country has been mini- 
mized. 
DISTRIBUTION IN MEXICO 
A new infestation has been found in Mexico, at Monclova in the 
State of Coahuila. The previously known infestations in Mexico 
were the entire Laguna district, Santa Rosalia, State of Chihuahua, 
Fig. 2.— Distant view of cotton plantation in the Laguna district, showing flooded fields. 
San Carolos, approximately 40 miles west of Eagle Pass, Tex., 
Allende and Santa Monica in the State of Coahuila, about 40 miles 
from the nearest point on the Rio Grande, and several points in the 
Rio Grande Valley opposite Presidio County, Tex., and El Paso 
County, Tex. 
The Mexican records to which reference has been made deal only 
with infestations in growing cotton. The insect is constantly being 
brought to the border towns in Mexico in cottonseed scattered in 
freight cars, and living specimens are frequently found under such 
conditions by the inspectors of the Federal Horticultural Board. 
HABITS 
POSITION OF EGGS ON THE PLANT 
According to observations made by Loftin 5 on plants growing in 
the field in the Laguna, 51.7 per cent of the eggs of the pink bollworm 
are deposited on the green bolls, the remainder on other parts of the 
» U. C. Loftin, K. B, McKinney, and W. K. Hanson. Op. cit. 
