PHRYGANEA, 187 
Lucy, By men ! for what purpose ? 
to eat ? 
Mother. No^ no ; fishermen make use 
of them for bait; they are called stone 
bait, and are eagerly swallowed by trout. 
In the chrysalis state the phryganea is 
enveloped withinside the rough outer 
case, by a web of fine net-w^ork, so trans- 
parent that the perfect fly may be dis- 
tinctly seen. When about to become an 
inhabitant of the air, it raises its tube to 
the surface of the water, quits at once 
both the outward case and the delicate 
chrysalis covering, and emerges a beau- 
tiful fly ; in this state it generally avoids 
the bright sun, and flutters, amidst the 
flowers, or settles upon the leaves and 
branches in shady places. 
Lucy. It seems strange that such a 
number of beautiful flies should first have 
been ugly water worms. Do all the lar- 
vae of the order neuroptera live in the 
water ? 
Mother. Not all. There are several 
genera, that in each of the stages of their 
