Of ANTS. 57 
ance in the Colour, Size and Structure of their 
Parts, that the naked Eye may eafily difcin- 
guifii it. 
On the contrary, it is to be prefumed that thefe 
Flies are of different Sexes.The final! ones I take 
to be Males, and the large to be Females. It is 
alfo highly probable that fome of thefe Females 
afterwards give Birth to new Colonies- and entitle 
themfelves to the Dignity of Queens. There are 
many ftrong experimental Reafons that concur to 
fupport fo uncommon a Curiofity. 
If you diffecff a fmall Ant-Fly, or fqueeze the 
Extremity of its Body, and put it in a Microfcope, 
you will obferve an Apparatus exactly analogous 
to what may be found in Numbers of Male In- 
feds, and which undoubtedly anfwers the End of 
Generation. 
If you examine a large Amt-Fly, you will find 
the Extremity of its Body to be taper, and fup- 
plied with an Orifice that communicates with the 
Infide, but entirely foreign to what is met with 
in the Males, Upon opening it 5J you will obferve 
the Subftance and Make to be very like that of a 
Female Bee, Wafp, or Queen Ant, when not 
with 
