796 NATURAL HISTORY. 
them out; and then they caufe putrefaction of the flefh round about 
them, producing malignant ulcers, and fometimes a gangrene, 
Thefe infe&s not only attack men, but Monkeys, Dogs, and Cats = 
the beft way to prevent them from entering the {kin, is to wear good 
ftockings and to wath the feet often, particularly with fea-water: 
There is an infe¢t in the valleys of the province of Popayaa in South- 
America, which though not particularly defcribed, is proper to be taken 
notice of, on account of its dangerous effects. It is called Coyba, and 
is of a fiery red colour; its fize does not exceed that of a middling 
Bug, and it is commonly found under ftones, and among the grafs. 
When this infeét is crufhed, or burft upon the fkin of any animal, its 
‘venomous juices enter the pores, mix with the blood, and immediately 
produce a very dangerous {welling, the confequence of which, if no 
proper remedy be applied, is certain death. 
The native Americans take the dried flems of a particular herb that 
grows in thefe vallies, fetting them on fire, and finging the patient all 
over, as foon as the body begins to fwell. However if this infect be 
crufhed in the palms of the hands, no bad effe@ will follow, which per- 
haps may be owing to the thicknefs of the fkin. Inftin@ teaches the 
cattle that feed in thefe vallies, always to blow ftrongly upon the grafs 
before they eat it ; and yet notwithftanding which, the Mules fometimes 
happen to eat them, the confequence of which is always a welling, 
and immediate death. 
At Martinico there is another red infe&, which is very fmall, and is 
generally met with in the favannahs or meadows, which are not very 
wet: they are no larger than a pin’s point, and appear as red as fire 
they get through the ftockings, and fix themfelves to the kin, where 
they caufe a dreadful itching. Horfes and others that graze in thefe 
paftures, have fometimes their head covered over with them, and then 
they rub them againft ftones and trees fo roughly, that one would think 
they would tear their fkins to pieces: to cure them the inhabitants make 
baths with odoriferous herbs, wherewith they wafh the legs and feet. 
The cheefe Mite has a roundith oval body, with a whitith fmooth dkin, 
and a fmall head: the legs, and parts about the mouth are a little 
brownifh, and much harder than the body, on which there are hairs. 
The Lou/e of the Beetle, is a very minute infeét, with a reddifh round 
body, covered with a firm hard fkin, the head is very fmall, but the 
legs are pretty long, and the pair before are longer than the reft. It 
runs very {wiftly for its fize, and may be frequently feen on the bodies. 
of Beetles, particularly the black Beetle, and other large infe@ts. It is 
called by Lifer, the yellowifh Loufe that infefts Beetles. 
The fearlet-tree Mite, has a roundith body, aad {mooth fhining glofly 
fkin, which feems fo fwelled, as to be ready to burft; it is of a bright 
red colour, and has a very fmall head, with fhort legs. It is marked ' 
on each fide with a fmall dufky {pot near the breaft, and there are a few 
hairs feattered over the different parts of the body. It may be frequent- 
ly feen on currant bufhes, running over the fruit. 
The flone Mite, is of a bright red colour, with a round {welled body» 
and a fmall pointed head; the legs are pretty long, and of a paler red 
than the body the feelers are much longer than in any infe@ of this 
Ao It is common upon old ftone walls and rocks, and runs very 
rot Ye, 
brifkly The 
