xvili SHORT ACCOUNT OF THE MORE IMPORTANT 
Family Zphydride. 
Face very convex, covered with hairs and bristles, but no vibrissee. 
Clypeus large. Proboscis incrassated with a swollen chin. Neura- 
tion incomplete. Auxiliary vein distinct only at its base. Anterior 
basal cell united to discal cell. 
Family Drosobhilide. 
No bristles along costa. First longitudinal vein very much cur- 
tailed ; auxiliary rudimentary. Front bristly above. Small vibrissa 
at border of mouth. A distinct sub-antennal furrow. Antenne with 
third joint long, terminal bristle pectinate or pubescent. 
Family Chloropide. 
No bristles along costa. No auxiliary vein. Anterior small basal 
cell united to discal, the posterior one wanting. Bristles only on 
the crown. Border of mouth with no vibrisse, but sometimes a 
single hair. 
Family Agromyside. 
No costal bristles. First longitudinal vein short, the auxiliary 
connected with it at tip; posterior transverse vein far distant from 
the border. Front with strong bristles. Border of mouth with 
vibrissa on each side. Third joint of antenne rounded, terminal 
bristle bare or pubescent. 
Family Phytomyside. 
No bristles along costa. Veining much as in above, but no 
posterior transverse vein. 
Family Astiade. 
No bristle along costa. First and second longitudinal vein short. 
The two posterior basal cells, as well as the transverse vein, wanting. 
Family Borboride. 
Neuration incomplete, only the commencement of the auxiliary 
vein being seen. Thorax, scutellum, and abdomen flat. Front 
bristly. Face excavated, with a vibrissa on each side of border of 
mouth. 
Family Phoride. 
Wings with several stout veins running along the costa, and three 
or four weak ones which run across surface of wings and not com- 
pletely connected with hindmost of the stout veins from which they 
seem to issue. Antennz apparently only single-jointed, with long 
bristle. 
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