BY FREDERICK A. A. SKUSE. 
119 ^ 
pellucid, with a pale greyish-browa tint ; a fuscous transverse 
band, very pale posteriorly, near the tip of the wing, starting from 
the costal margin mid- way between the tips of the first and second 
longitudinal veins, and on the posterior margin enveloping the tip 
of the anterior branch of the fourth longitudinal vein ; a pale 
streak under the fourth longitudinal vein opposite to the tip of the 
rudimentary fifth longitudinal vein ; veins brown, very distinct, 
except the tips of branches of the fork of the third longitudinal. 
Auxiliary vein joiningthe costa immediately before the origin of the 
third longitudinal vein ; first longitudinal vein reaching the costa 
opposite the base of the fork ; marginal cross-vein very short, 
situated not far from the tip of the fii’st longitudinal vein ; costal 
vein extending beyond the tip of the second longitudinal vein ^ 
the distance from that to the tip of the anterior branch of the 
folk ■ tips of the fork very pale, almost invisible before reaching 
the margin, that of the anterior branch situated as much above 
the apex of the wing as that of the posterior branch is below it ; 
rudimentary fifth and sixth longituinal veins as in the two 
preceding species. 
Hab . — Sydney (Skuse). January and December. 
Genus 30. Leia, Meig. 
Leia, INIeigen, Syst. Beschr. I. 1818, p. 253; Macquart, S. a B. 
Dipt. I. 1834, p. 135; Curtis, Brit. Ent. XIV. 1837, p. 645; 
Stieger, Kr. Tidsskr. 1840, p. 232 ; Zetterstedt, Dipt. Scand. 
XI. p. 4140 ; Walker, Ins. Brit. Dipt. III. 1856, p. 27 ; Winnertz, 
V. z.-b. G. Wien, XIII. 1863, p. 792. 
Head ovate owing to the high vertex ; flattened on the fore 
part, situated deep in the thorax. Eyes oval. Ocelli three, 
arranged in a tiiangle on the upj)er ])art of the broad front, 
almost situated on the vertex, the middle one .smaller than the 
other two. Paljn ])rominent, incurved, four-jointed, the first 
joint small, the next two almost of equal size, the fourth as long 
or longer than all three together. Antenme cylindrical, pro- 
jecting forwards, somewhat arcuated, 2--f 14-jointed ; joints of the 
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