BY FREDERICK A. A. SKUSE. 
116 a 
cross-vein ; first longitudinal vein greatly distended at the tip, 
and for a short distance before it. A yellowish streak appears in 
the cells on each side of the cross-vein. 
Hah . — Knapsack Creek, Blue Mountains (Skuse) ; Elizabeth 
Bay {Masters tk Skuse). August to Octobei’. 
Obs . — The description of this species agrees almost exactly with 
that of the European M. alpicola by Winnertz (Beit, zu einer 
Mon. der Pilzmiicken, p. 682, No. 11). 
Sub-section V. — CEROBLATIN.^. 
Genus 7. Ceroplatus, Bose. 
Ceroplatus, Bose, Act. Soc. Hist. Nat. de Paris, I. 1792, p. 42; 
Flatijxhra, Meigen, Syst. Beschr. I. 1818 ; Ceroplatus, Macquart, 
S. a B. Dipt. I. 1834, p. 140 ; Platyura, Walker, Ins. Brit. Dipt. 
HI. 1856; Staeger, Kr. Tidsskr. 1840; Ceroplatus, Zetterstedt, 
Dipt. Scand. IX. 1850, p. 3439; Winnertz, V. z.-b. G. Wien, 
XIII. 1863, p. 684. 
Head small, broadly oval, flattened on the fore part. Eyes 
oval, sometimes a little emarginate on the inner side above. Ocelli 
three, in a curved line on the front. Palpi short, not incurved, 
with three or four joints ; first joint small^ the others larger. 
Antennae projecting forwards, shorter than the head and thorax 
together, very fiat and broad, broadest in the middle, 2--I-14- 
jointed ; joints of the scapus catilliform, in some species the first 
joint prolonged in front ; flagellar joiut.s almost annular, the last 
joint conical or gemmiform. Thorax oval, highly arched ; scu- 
tellum almost semi-circular; metathorax arclied. Abdomen 
cvlindrical or a little fiattened, with seven segments in both 
sexes. Legs long ; tibiaj spurred, the spurs of unequal length ; 
lateral spines missing or exceedingly small ; one range on the 
inner side of the fore tibiae, one on the inner side and two on the 
outer side of the hind tibiae. Wings micro.scopically pubescent, 
shorter than the abdomen; ba.se broad and rounded off; in- 
cumbent in repose. Costal vein extending beyond the tip of 
