-5 a 6 DEPTER0U3 INSECTS, 
Order VI . — Dexterous Infers. 
This order comprehends all the numerous races of flies, 
tipulae and gnats, which are charafterifed by having only 
two wings : Below each of thefe there is placed a halter 
or poifer, which is terminated by a knob, and has its 
bafe concealed under a little fcale *. 
* Syft. Nat. Ord, VI, 
