84 
active condition. they were not able to withstand the sudden fall in the 
temperature. Moreover, insects, as is also the case with plants, are 
not as well protected and do not become as dormant in southern lati- 
tudes as they do at the North, and are, therefore, not able to withstand 
such unusual cold as was brought on by the February blizzard. 
Diaspis amygdali was almost totally destroyed by the fréeze. At 
Irby, Ga., on March 13, I examined an orchard of about 12,000 peach 
trees more or less infested with this coccid, and was unable to find a 
single live scale. Two seedling trees, white with scales, were taken 
from a fence corner by this orchard and transplanted in a garden in 
Atlanta to determine whether or not any female scales were left to 
breed. One of the trees died. Up to date no living seales have been 
found on the other one. 
The case at Bainbridge, Ga., was examined June 30. <A dozen trees 
are still standing on Mrs. E. Johnson’s place, and these were white 
with scales last fall. At the above date the trees were nearly clean. 
Some dead scales were found on all of the trees, but no live ones could 
be found except on two trees. At the base of two trees standing on 
the east side of an outhouse a few live scales were found. 
On October 6, 1898, | inspected an orchard of 25,000 peach trees at 
Irby, Ga., and found the whole orchard thoroughly infested with 
D. amygdali. About 1,009 trees had the appearance of being covered | 
with snow. This orchard should have been treated during the winter, 
but was not, on account of so much rainy weather before the freeze, and 
it was not thought necessary after the freeze. On June 51, 1899, this 
- orchard was thoroughly inspected, and living scales could only be found 
occasionally at the base of the trees, where they had been protected by 
dry grass, and perhaps the snow that accompanied the freeze. Also, a 
few scales could be found occasionally in the forks of limbs and under 
pieces of bark where they were well protected. 
This coccid is also known to withstand the greater cold of more 
northern latitudes. In the Canadian Entomologist, Volume XXXI, 
page 130, Prof. F. M. Webster states that D. amygdali infesting a tree 
from Japan, planted out on the grounds of the Ohio Experiment station 
at Wooster. Ohio, withstood the temperature of —9° F. in the winter 
of 1897-98. He states further, however, that a temperature of —21° 
F., reached in the winter of 1895-99, apparently destroyed all of the 
scales on the trees under observation, as not a living specimen could 
be found. 
Aspidiotus nerii was also under observation at Albany and Thomas- 
ville, Ga., infesting chinaberry trees on the streets of these towns, but 
the infested trees died from the effects of the freeze, and it could not 
be determined what direct effect the cold had upon the seales. Last 
summer the leaves of a number of sweet-gum trees on the streets of 
Atlanta were badly infested with A. nerii, and up to date this season 
not a living scale can be found on these trees. While this may be due 
