4 
this case being for brevity omitted. Indeed the instances of 
its application are very numerous in our language. 
The way or reason that these Insects became so designated, 
is pretty manifest, from the Habits more particulaily of the 
second species of this enumeration, or Hamorrhoidalis, which 
being fully fed its growth completed, in quitting its habitation 
in the stomach, and passing through the intestines, does usually 
hang for some days upon the margin of the Fundament, be¬ 
neath the tail, then falling to the earth and forming a Chry¬ 
salis ; and in this state would attract more particular notice 
and attention, occasioning often serious inconvenience and dis¬ 
tress. So situated and observed, it was denoted the Bout Worm 
or Bnd Worm, and by contraction Bot Worm and afterwards, 
for want of better epithets, the appellation became extended to 
the Fly produced by this worm, and we obtain Bot Fly, though 
it is obvious, as the fly never affects these situations, its appli¬ 
cation is improper, and has served to disguise and conceal the 
real origin of the name. 
Erroneous and strange notions were entertained in early times 
of these animals. What views the Romans had of them, we 
learn from a passage in Vegetius, an elegant veterinary writer 
in the time of Valentinian, in the fourth century. He says, 
“ When a Humour is found in the anus of the Horse like a 
boiled bean, it is a sign of this disease (the Coriago) or hide¬ 
bound Horse, for it is a sanies from the wounds inflicted by small 
animals in the inside of the beast in which it is evident he 
alludes to the second species, the hajmorrhoidal or red-tailed 
Bot, which in hanging, as we have stated, to the extremity of 
the rectum, corresponds very tolerably in size and appearance 
to the boiled Bean he compares it to. Still more antiently than 
* Hnjusmodi passionis signum est (morbus coriaginosus) cum invenitur humor 
in ano fab® coctae similis : est namque sanies ex illis vulueribus que bestiol® in- 
trinsecus fecerunti Ed. Manheim, p. 63. 
