Hippobofca. D I P T E R A. 233 



blance which one of them bears to that infect ; 

 others have called them Horfe-FIies y by which 

 name they are more generally known • they are 

 found frequently in woods and marfhy places, 

 but moil commonly on the bodies of birds, 

 horfes and other quadrupedes, fucking their 

 blood, upon which alone they fubfift. Their 

 larvse are unknown. One of the fpecies is 

 Jtnown to be pupiparous •, the egg of this in* 

 feet is larger than the mother, and is rather a 

 pupa or chryfalis, than a real egg, fincethe corn- 

 pleat or winged infe£t is produced from it. 



Genus 



