xiv SHORT ACCOUNT OF THE MORE [IMPORTANT 
Family Dolichopodide. 
First basal cell rather short, the second united with discal cell, 
third small. Auxiliary vein running in the first longitudinal. Third 
vein simple; fourth often furcate. No intercalary vein. Em- 
podium small, membranous. Antennz close together; third joint 
not annulated, with bristle at tip. 
Family Lonchopteride. 
Three basal cells of moderate size, nearly equal in length. Fourth 
longitudinal vein furcate, and united with fifth near the base. First 
two joints of antennze small, testaceous ; third rounded, witha slender 
apical bristle. Empodium wanting. 
Family Platypezide. 
Three basal cells rather large, the hindermost always ending 
acutely at more or less distance from the border of the wing. Third 
longitudinal vein simple. No intercalary vein. Antenne with 
apical bristle. Empodium wanting. 
Family Pipunculide. 
Three basal cells much prolonged, the hindermost closed near the 
border of the wing. Fourth vein may be absent, furcate when 
present. No intercalary vein. Eyes large, not quite contiguous in 
¢. Antenne short, with a basal bristle. Legs with few short 
spines. Empodium wanting. 
Family Syrphide. 
Three basal cells much prolonged. Third longitudinal vein 
simple ; a spurious longitudinal vein between third and fourth ; 
fourth united at its end to the third ; no intercalary veins, Antennz 
close together; third joint various, generally compressed and with a 
bristle on its back. Hypopygium unsymmetrical. No empodium 
Head semicircular, as broad as thorax. 
Family Conopide. 
Three basal cells, large, third closed, more or less remote from the 
posterior border. All the longitudinal veins simple; no intercalary vein. 
Head large, always broader than thorax. Antenne long ; third joint 
clubbed and ending in a bristle. Hypopygium symmetrical. Em- 
podium wanting. Proboscis generally prolonged. Eyes not con- 
tiguous. 
Family Gsétride. 
Antennz inserted in round pits. Oral organs rudimentary. 
Tegule large. Antennz short; third joint with a terminal bristle. 
Very hairy flies, resembling bees. 
