Eggs of the breeze-fly of the horse, b, the same magnified, c, larva or bot, d, chrysalis. 

 c, perfect insect. /, position of the female in the act of oviposition. 



CHAPTER III. 



HISTORY OF BREEZE-FLIES.* 



THE name of gad-fly has been repeatedly given to the 

 insects whose history is detailed in this chapter, but that 

 term more properly belongs to those blood-sucking flies 

 which cause such pain and misery to our horses, in pla- 

 ces abounding in wood, especially in warm cloudy weather 

 and before thunder showers. The present insects when in 

 the larva state are termed "bots" in horses, "maggots" in 

 sheep, and "wornils" or "warbles" in cows and oxen; 

 and these three represent three divisions of the family, 

 differing essentially in their history. The perfect insect 

 produced from each kind of larva is properly termed a 

 breeze-fly. 



* Authority : An Essay on the Bots of Horses and other animals, 

 by Bracy Clark, F.L.S. 



