119 



broadest on the hind tarsi. Ungues of all legs equal and simple. Claw formula 

 0.0—0.0—0.0. Length of body 6.5—7.5 mm. 



Wings unspotted, with veins covered with long, thin, black, lateral scales and 

 a dark fringe; both fork cells long and about the same width; second marginal 

 cell a little longer than the second posterior cell; base of the second posterior per- 

 haps a little nearer the base of the wing than that of the second marginal cell; 

 petiole of the second posterior about as long as that of the former cell; basal cross-vein 

 about the same length as the anterior cross-vein, but not its own length distant 

 from it. Halteres with a pale stem and fuscous knob. 



Male. Proboscis straight, uniform, brown, almost black at apex. Palpi longer 

 than proboscis. First joint of palpi in the first basal third part white; then a small 

 black stripe; again a white stripe and lastly black at apex; second joint white at 

 base, otherwise black; third joint white at base and black at apex, slightly spa- 

 tulate and truncated, the two last joints with black hairs. Antenna' plumose, banded 

 black and white; hairs long, dense black. Occiput black with a hairless line down 

 the centre; clothed with pale creamy curved scales on each side; flat creamy 

 white ones at the sides, but commonly with no brownish lines between these and 

 the curved ones, long brown upright forked ones, dotted about and golden hairs 

 projecting forward. 



Mesonotum chestnut brown, with three rather distinct lines of yellowish gol- 

 den scales as long as the thorax and two other more distinct bright yellowish, only 

 half as long as the former ones, bordered by black scales; long black hairs scattered 

 over the whole thorax and over the roots of the wings; scutellum brown, trilobate, 

 with tufts of long black hairs at the border. 



Abdomen blackish brown, covered with brown scales, each segment, except 

 the first, with a basal band of creamy- white scales, broader on the last segment; 

 posterior borders of the segments with long golden hairs and the sides with long 

 brown hairs. . 



Legs with the coxa? brown; femora al the base and beneath grey, at the upper 

 side dark brown; knee spots white; tibia? dark, covered with dusky brown scales, 

 apex bright yellow. All the basal joints with creamy white apices, but without 

 white bands at base; hind metatarsus about two thirds the length of the tibia; 

 metatarsus of the front legs distinctly longer than the remaining four joints together; 

 ungues of fore and midlegs unequal; the larger one with two, the smaller with one 

 tooth; hind ones of moderate size equal and simple. Claw formula 2.1 — 2.1 — 0.0. 

 Length 7.5 — 8 mm. 



Wings long; the veins clothed with yellowish-brown scales, the lateral scales 

 mostly long; second marginal cell narrower; but about the same length as the se- 

 cond posterior cell; its stem only three-fourths of the cell; its base a little nearer 

 the apex of the wing than the base of the second posterior cell; petiole of the latter 

 as long as the cell and almost as long as the stem of the second marginal cell; the 



