1140 
DIPTERA OF AUSTRALIA, 
Genus 42. Brachycampta, Winn. 
Wing as in Allodia. Auxiliary vein always very small, bent 
towards the first longitudinal vein. Second posterior cell more 
or less extended, its base lying much before the base of the 
second sub-marginal cell, sometimes before the root of the second 
longitudinal vein. Fifth longitudinal vein missing. Legs slender. 
Genus 43. Trichonta, Winn. 
Costal vein extending almost impei’ceptibly beyond the tip of the 
second longitudinal vein. Auxiliary vein large, running parallel with 
the first longitudinal vein, in which it ends bent downwards. Apex 
of the inner marginal cell lying over the short petiole of the fork of 
the third longitudinal ; the base of the second postei’ior cell, 
which is not extended, lies sometimes before, sometimes under, 
sometimes beyond the base of the second sub-marginal cell. Fifth 
longitudinal vein delicate, very short or only rudimentary. Legs 
slender. 
Genus 44. Anatella, Winn. 
Costal vein extending very much beyond the tip of the second 
longitudinal vein, almost to the apex of the wing. Auxiliary 
vein very small, bent posteriorly. Apex of the inner marginal 
cell lying above the petiole of the fork of the third longitudinal ; 
the base of the second posterior cell, which is not extended, 
lies sometimes before, sometimes under, and sometimes beyond the 
base of the second sub-marginal cell. Fifth longitudinal vein 
delicate, disappearing before the base of the second posterior cell. 
Legs long, the tibial spurs unequal in length. 
Genus 45. Phronia, Winn. 
Costal vein sometimes extending almost imperceptibly beyond 
the tip of the second longitudinal vein. Auxiliary vein incomplete, 
bent anteriorly, not reaching the costa, rarely going completely 
into the costa. Apex of the inner marginal cell lying over the 
short petiole of the fork of the third longitudinal vein. Second 
