66 
D I PTERA, 
Each of its wings is as it were crowned with fmall 
fpines towards the tail ; and the head is adorned with 
two thin taper horns, rather long and curve. 
The perfect infeft is often met within meadows. 
The larvae generally live under and confume the 
roots of vegetables, which larvae prove dainty food 
to the crows, in whom, nature has feemingly ordained 
this inftinft, to the end the larvae might not exifl in 
too great numbers ; fo as to deflroy the produce of 
the earth. 
GENUS 3.—MUSCA, FLY. 
The mouth of the mufea is formed by a foft, flefhy 
probofeis, with two lateral lips ; it wants palpi. 
The mufea is the mod common of all infefls, thff 
name of Fly is particularly applied to them. 
Of fome, the larvae live in the water, and devour 
aquatic infects. 
Of fome, the larvae devour the aphides : Thefe 
larvae feem to want eyes ; and lengthen or fhretch out 
their head as if to feel for their prey. Others live in 
and confume all kind of putrid flefh ; others are 
found in cheefe ; ethers in the excrement of different 
animals ; many live in the water, and prefer the moll 
putrid and muddy. One is found on the rofe. 
Mufea Chamcdeon. 
Its head greatly refembles that of the ceftrus; and 
the 
