CHAPTE Kava, 
THE BIBIONID#. 
THis is a small family of usually dark flies. The body broad, 
fairly large, 7-9 segments. Prothorax conspicuous ; scutum of meso- 
thorax undivided. Wings broad, with no discal areolet. Antenne 
seldom longer than head in both sexes ; thick, cylindrical, moniliform ; 
composed of from 8 to 12 joints. Palpi 3 to 5 jointed (apparently 
only one large joint in Scatopse). Eyes large, round or reniform, 
often hairy ; contiguous in ¢, smallin 9. Ocelli three. Legs short ; 
tarsi armed with ¢hree pulvilli; tibize having often large thick spurs. 
The following are synonymous with Bibionide. 
( Bibionides, Westwood. 
Tipularie muscaformes, Mg. 
Bibtonide =-/ Bibionttes, Newne. 
Hirteides, Bilb., Zett. 
Scatopsides, Zett. 
The Bibionidz are divided in two sections, and the genera tabulate 
as follows : 
A. ScaTopsin&. Posterior basal cell wanting. 
Anterior tibiz of usual shape. Metatarsus of 
the hind legs shorter than the rest of the 
tarsal joints together. Legs moderately thick. 
Third longitudinal not forked - - = Scatopse. 
Anterior tibiz of usual shape. Metatarsus of 
the hind legs as long or longer than the rest 
of the tarsal joints together. Legs slender = <Avxarete. 
Anterior tibize with a single spine at the apex = Asistes. 
B. Bisionin&. Posterior basal cell present. 
Anterior tibiz with a wreath of spines atapex = Délophus. 
Anterior tibiz with a single spiny process at the 
end - - - - - - - = Br: 
