E»T PTE RA, 
The animal fwells, grows red, and does not quit its 
hold till it has gorged itfelf.' The liquor it has in¬ 
jected caufes, by its fermenting, that difagreeable 
itching, which may be removed by volatile alkali, 
or immediately rubbing and walking with cold 
• —, ■ . 9 . 
water* 
At night, to rub with fuller’s earth and water, 
lelfens the inflammation. 
The female depofits her eggs on the water, placing 
them in the form of a little boat, compofed of two 
or three hundred eggs, it fwims on the water two 
or three days, after which they hatch. If ftorms 
arife, they fink. There are frefh ones ever} 7 month. 
Were they not devoured by fifh, water-fowl, and 
fwallows, the air would be darkened; 
GENUS 6.—EMP-IS. 
The perfeCt infeCt is common upon flowers. 
The larvae and chryfalis are unknown. 
GENUS 7.—CONOPS. 
/ 
The conops is chiefly found in meadows and fields, 
where the different fpecies are very troublefome to 
cattle: they draw blood from horfes. The larvae 
and chryfalids are unknown. 
One of thefe infeCts (conops calcitrantJ is found 
every where, in autumn efpecially ; it differs from 
the 
