1208 
DIPTERA OF AUSTRALIA, 
deep brown. Legs long, slender. Coxie and femora pale ochra- 
ceous ; tibiie cinereous ; tibial spurs, lateral spines and tarsi 
almost fuliginous. In the fore-legs the tarsi more than twice the 
length of the tibite, the latter being almost as long as the meta- 
tarsus. \Ving.s a little longer than the abdomen, almost hyaline, 
with a pale brownish tint, the veins brown ] brilliantly iridescent. 
Auxiliary vein distinct. Costal, first longitudinal and second 
longitudinal veins running almost parallel to one another, the 
latter .somewhat bent posteriorly towards the tip. Fifth longi- 
tudinal very short and indistinct. 
Ilab . — Elizabeth Bay, near Sydney (Skuse). November. 
Obs . — I have found two ^ specimens only of the above, both 
collected from windows. 
' Genus 42. Triciionta, Winn. 
Mycetophila, Stajger, Kr. Tidsskr. 1840, pp. 251 and 259 (16 and 
27) ; Zetterstedt, Dipt. Scand. XI. pp. 4203 and 4299 (22 and 47) ; 
Triciionta, Winnertz, V. z.-b. G. Wien, XIII. 1863, p. 847. 
Head of a broad oval owing to its high vertex ; flattened on the 
fore part ; situated deep in the thorax ; front broad, the anterior 
border advanced triangularly in the middle, the apex of which 
reaches almost as far as the basal joints of the antennae. Eyes 
circular. Ocelli large, the middle one small, situated in a small 
depression at the base of the frontal triangle. Palpi prominent, 
incurved, four-jointed ; first joint small, the fourth joint longer 
than the second and third taken together. Antenme slender, 
projecting forwaids, arcuated, 2- -f- l4-jointed ; fir.st joint of the 
scapus cyathiform, the second cupuliform, both setiferous at the 
apex ; flagellar joints cylindrical, compressed from the sides, with 
short downy pubescence. Thorax small, oval, liighly arched j 
prothorax hairy, without sette on its borders; scutellum semi- 
circular, setiferous at the apex ; metathorax high, acclivous, 
somewhat arched. Abdomen of the ^ with six segments, narrowed 
at the base, compressed from the side.s, with a more or less large 
anal joint and forcejis ; in the § with seven segments, narrowed 
