A 
KEUROFTERA, 35 
X . .— nr . . .... ""' ■■ ■ 1 ' 1 ' ■' « 
chryfalis is covered with a thin gauze, through which 
the new form of the infect is eafily difcerned. The 
Phryganea, on the point of changing its element, rifes 
to the furface of the water, leaves its tube, rifes into 
the air, and flutters upon flowers and trees ^ but ge¬ 
nerally fettles on the Tides of walls, branches of trees, 
&c. which are lead: expofed to the fun : whofe in¬ 
fluence they feem to dread, feldom flying in the day¬ 
time* 
Swallows feed upon them. 
Some larvae are found in ftagnating waters, where 
they wrap themfelves up in the water lentil, cut out 
into regular fquares, and fitted one to another* 
Trouts are very greedy of thefe larvae ; they are 
often flripped of their coats, and ufed as baits. The 
common ones are much fought after by fifhermen, 
and called /lone or cod-bait . 
The Phryganea bicauda carries its eggs in a duller 
as fome fpiders do. 
The perfefl infe£t is called fpring-fly, 
GENUS 4.—HEMEROBIUS. ’ 
This infe£l takes its name from the fhortnefs of its 
life ; which, however, continues feveral days* 
In the Hate of larva it is a great devourer of plant- 
lice, for which it has had the appellation of Lion of 
-the plant-lice bellowed upon it. The hemerobii, 
even 
