114 QUINCE CULTURE. 
gray line, and towards the base are covered with a thick 
wool-like covering. ‘The posterior wings resemble those 
‘of the male, as do also the head and thorax. The ex- 
panse of the wings is from two and three-quarter inches 
to three inches and a half. 
Soon after pairing the female lays her eggs in elusters 
of twenty to thirty. The eggs are top-shaped, flattened 
at the top and compressed on the sides; about one- 
twentieth of an inch in diameter, and creamy white, with 
a yellowish spot above, which gradually increases in 
color as they come to maturity, when it is almost black, 
and the yellow Jarva show through the sides. Beginning 
their work as early as June and extending it nearly 
through September, it is easy to see that they may do 
great harm. The broods remain together till near ma- 
turity, when they separate for pupating. The full-grown 
caterpillar is two and a half inches long, pcea-green, with 
a broad brown stripe, edged white, lov down on the 
body. Beginning with the fourth ring, there is a brown 
triangular spot on the under side of each. The breath- 
ing pores are yellow, ringed with brown. Each segment 
of the body is dotted with little warts, armed with 
clusters of branching spines. ‘The prick of these sharp 
spines irritates the skin like the sting of nettles. Up to 
the age when they separate, the groups move in a regular 
order, guided by the thread spun by the leader. They 
moult four times, attaining maturity in August and Sep- 
tember, according to the time they were hatched, when 
the caterpillar will measure two anda half inches in length. 
The full-grown larva descends to the ground, where it 
draws together leaves or any other convenient material 
for an outer covering, within which it makes a cocoon 
of tough, gummy, brown silk, in which it changes to a 
chrysalis. 
Remedies.—lf not discovered before they are half 
grown, when together, they can be readily found and 
