NATURAL ENEMIES. 
191 
like brown or blackish worms ( Filaria ), resembling in ap- 
pearance those called horse-hair eels (Gordius). I have 
taken three or four of these animals out of the body of a 
single locust. They are also much infested by little red 
mites, belonging apparently to the genus Ocypete ; these so 
much weaken the insects, by sucking the juices from then- 
bodies, as to hasten their death. Ten or a dozen of these 
mites will frequently be found pertinaciously adhering to the 
body of a locust, beneath its wing-covers and wings. A kind 
of sand-wasp preys upon grasshoppers, and provisions her 
nest with them. Many birds devour them, particularly our 
domestic fowls, which eat great numbers of grasshoppers, lo- 
custs, and even crickets. Young turkeys, if allowed to go at 
large during the summer, derive nearly the whole of then- 
subsistence from these insects. 
i 
