DIPTERA. ; 281 
than twice its length; sixth slender, much longer than the third : chest 
and breast with a gray covering; chest with five black stripes: scutcheon 
ferruginous : abdomen oval, a little shorter than the chest, red on each side 
towards the base: wings slightly gray; veins black, tawny at the base ; 
prebrachial yein forming a right angle at its flexure, near which it is 
inclined inward and is straight from thence to the tip; lower cross-vein 
with the two usual curves, the upper one very slight: alulz white. Length 
of the body 44 lines; of the wings 9 lines. 
New South Wales. 
s 
TACHINA BASALIS. 
Nigro-enea, canescens ; caput argenteum ; thorax quadrivitiatus ; abdomen 
albo sex-maculatum ; antenne basi et subtus fulve; genua ferruginea ; 
ale sublimpide. 
Bronze-black with a hoary covering : head silvery white, clothed behind 
and beneath with white hairs ; frontalia deep black, triangular, widening 
very much towards the feelers; antennaria tawny; lateralia ferruginous : 
mouth black, its tip and the palpi luteous: feelers black; first, second and 
base of the third joint tawny ; third joint full four times the length of the 
second, deepening from the base to the tip which is slightly rounded; 
orifice very near the under side, a little nearer to the base than to the tip : 
chest with four bronze-black stripes, the inner pair very slender: abdomen 
cylindric-obconical, longer and narrower than the chest, tessellaved with 
white which forms three large spots on each side: legs black ; thighs with a 
hoary tinge; knees ferruginous : wings almost colourless ; ves black, 
tawny at the base, their borders indistinctly tinged with pale brown; pra- 
brachial vein forming a right angle at its flexure, near which it is curved 
inward, and is straight from thence to the tip; lower cross-vein with two 
slight curves, the lower inward, the upper outward and very indistinct : 
alule white: halteres yellow. Length of the body 5} lines; of the wings 
10 lines. 
