XYLOTA. 



GENERIC CHARACTER. 



Antennae three-jointed, inserted on a frontal 

 elevation, nutant ; third joint suborbicular, com- 

 pressed, with a naked seta placed behind the 

 dorsal middle ; ocelli three ; proboscis with fleshy 

 lips ; hypostoma above impressed, near the mouth 

 a little elevated, retuse and subtuberculated : pos- 

 terior thighs dilated, spinous beneath ; onychii 

 two ; abdomen with five segments ; wings in- 

 cumbent, parallel. 



OBSERVATIONS. 



For this genus we are indebted to Meigen. 

 Linne, Gmelin, Degeer, Schranck, and others, re- 

 ferred the species toMuscA; Fabriciusand Pan- 

 zer to Syrphus and Milesia. In his Systema 

 Antliatorum Fabricius, with Latreille and Fal- 

 len, included them in the genus Milesia; and 

 a few species were scattered in the genera Me- 

 RODON, Sc^vA, Eristalis, and Thereva, by 

 several authors. 



PLATE Vlll. G 



