98 
The parents of these leaf-rolling caterpillars are moths be- 
longing to the family Tortricidz. They are from three-fourths 
of an inch to one inch in breadth when the wings are fully ex- 
panded. The fore wings are of a brownish-yellow color with 
lighter markings (Fig. 52, a, Plate 9). These markings vary a 
great deal in different individuals, being entirely absent in 
some. The illustration shows several detached wings with 
different types of markings. The hind wings are of a light 
yellow color with a slightly darker margin. These pretty 
moths rest on the bark of the trees, and when disturbed, fly for 
a short distance with a very irregular flight, usually alighting 
on a blade of grass from which they are readily captured. 
Shortly after this time, on June 28, some of the eggs were 
found (Fig. 52,d, Plate 11). They are always deposited in 
clusters of from thirty to forty on the rougher bark of the tree, 
and not upon smooth twigs. ‘The small sack-shaped eggs are 
set on end, so closely packed together as to cause most of them 
to become nearly square, when viewed from the end. These 
eggs being placed compactly and closely together, like so many 
sacks of grain set on end, are covered with a curious protection 
made of scales from the moth, which closely resembles the 
shingles of a house, and which forms a perfectly water-tight 
covering. The abdomen of the female moth carries on its 
under surface a thick, broad brush of slender scales, longer and 
stouter than those covering the remainder of the body. After 
depositing the sticky eggs she presses the abdomen, while the 
head is directed downward, against the cluster of eggs. The 
scales adhere to the viscid covering of the eggs and are pulled 
out when she draws away her body. The viscid substance is 
impervious to water. The scales forming this shingle-roof over 
the egg-mass are lengthwise in position but in reverse order 
from that which they occupied on the body of the female. 
They are always directed downward and are closely and evenly 
laid, preserving the segmentation of the body as shown by the 
figure. Many of the egg-clusters were collected and placed in 
cages that their development might be studied, but none 
hatched this year. They will probably hatch during the spring 
of 1896. It is, however, possible that an earlier brood had 
already infested the trees before the insects were discovered; 
this, however, is not probable. Many of the branches, and 
