IO 
bulletin 94. 
As egg-patches 3 and 4 were not hatching when placed in the 
sacks but gave pupae and moths as early as any, it is to be presumed 
that they were not more than a day behind those in cages 1 and 5. 
This would make the shortest time from hatching of the egg to 
emergence of adult moth 50 days and the longest time 68 days. It 
is rather remarkable that in the four cases noted the first pupation 
occured on the same date, June 13. This would indicate about 11 
days as the ordinary time spent in the pupa stage. 
Moths bred from the same batch of eggs vary in color from a 
dark rusty red with only one conspicious pale yellow patch in the 
middle of the costal margin of the anterior wing to a light straw 
yellow with only faint indications of the rusty coloration outlined 
in a very light rusty brown. There is one typical pattern of the 
dark markings however, which can be traced through all the speci- 
imens. Figs. E. and F. Plate I. show twelve of these moths in 
two rows. All in the front row were bred from a single patch of 
eggs. Those in the second row are from two other patches. That 
all the moths from the five cages are of the same species is proven 
by the fact that each group has one or more moths that are exact¬ 
ly like some in all the other groups. 
Experiments for the destruction of eggs. Several laboratory 
tests were made to determine the effect of certain insecticides up¬ 
on the egg-patches early in the spring. They resulted as follows: 
Kerosene emulsion that was one-third kerosene was applied 
to 6 egg patches. None of the eggs hatched. 
Kerosene emulsion that was one-fourth kerosene was applied 
to 7 egg patches. One patch hatched well, one partially, 5 not at 
all. 
Kerosene emulsion that was one-sixth kerosene was applied to 
6 egg-patches. From one patch two larvae emerged and from 5 
none hatched. 
Crude petroleum was applied to 5 egg-patches, and none 
hatched. 
Whale-oil soap, 1 pound to 1 gallon of water was applied to 8 
egg patches. Three hatched well, 2 partially and 3 did not hatch 
at all. 
Whale-oil soap, 1 pound to 2 gallons of water, was applied to 
7 egg-patches; three hatched well, one hatched about half, two 
hatched a very few, one did not hatch at all. 
Whale-oil soap, One pound to four gallons of water was ap¬ 
plied to six egg-patches; two hatched well and four did not hatch * 
at all. 
Kinie salt and sulfur was applied to five patches; four 
hatched well and one did not hatch at all. 
