314 REporT OF THE ENTOMOLOGISTS OF THE 
trunks of the trees partially protected by the loose bark, in the 
grass under the trees, in protected places in and about the fences 
and in the angles about the eaves and window casings and along 
the sides of outbuildings. Not unfrequently the outbuildings 
seem to be the favorite place for pupation. In several badly in- 
fested orchards under observation last year it was found that when 
ready to pupate most of the caterpillars deserted the orchards and 
spun their cocoons upon nearby buildings. The cocoons spun in 
the grass were usually in a nearly upright position, and were sup- 
ported by numerous threads of silk leading to neighboring blades 
of grass. | 
Figure 6 is from a photograph of a bunch of cocoons taken from 
a building upon which the caterpillars congregated in large num- 
bers to pupate. 
The length of time required for the pupa stage varies. Fitch 
cites instances where the pupa stage lasted from 14 to 26 days, and 
from observations upon 9 caterpillars kept in confinement he found 
the average time required about 8 weeks. About 100 caterpillars 
under the writer’s observation last year pupated during the first 
week in June, and those that matured emerged between June 27 
and July 1. A few did not emerge until July 8. 
The adults—— The adults are reddish-brown moths of the size 
sLown in Plate XXXIV, Figs 1 to 4. The marks by which they 
are most readily distinguished are two nearly parallel white lines 
which extend obliquely across the fore wings. 
The following detailed description is from one of Dr. Fitch’s’® 
reports: ) : 
The winged moths are of a dull reddish or fox color, different individ- 
uals varying in the depth of their coloring, the females being often 
paler, approaching to grayish, and the males often darker, sometimes 
brown, with scarcely any tinge of red. The mark by which this species 
is most readily distinguished is two straight, white stripes which extend 
obliquely across the fore wings, parallel to each other, and to the hind 
margin, dividing the wing into three nearly equal portions. The anterior 
stripe is often slightly broader than the posterior one, especially towards 
10 Second Rpt., pp. 196, 197. 
