8o 
•APTERA» 
The Scarabaeus Stercorarius (the common dor, or 
clock) is fometimes found almofl devoured by them ; 
little except the fnell remaining ; and in this flate 
they will live fome days. ' v' 
The Beetle-Tick is given magnified as it appeared 
upon the leg of a beetle placed in amicrofcope. Two 
or three hundred have been found on a beetle. 
The Sheep-Tick is found alive in wool a long 
time after it is cut off. 
* • 
Acarius Ttlarius. 
According to GeofFroy, this infeft fpins a web on 
the bark of trees, generally on the north fide, from 
top to bottom of the trunk ; which web being dif- 
perfed by the wind, covers the fields with thole innu¬ 
merable threads, which fome naturalifts have mil- 
taken for condenfed vapour. 
They are called virgin's threads : fome think that 
thefe threads, floating in the air, waft the infe& about ; 
and ferve as a net to entrap other infe&s on the wing. 
GENUS 7.—PH ALANGLUM. 
Only one fpecies is common in Europe. The feet 
of this infed are very flender, weak, and liable to be 
broken—fome think that they grow again (one having 
been found with feven legs of the ufual length, and 
one fhorter.) 
They 
