226 STRATIOMYID.E 



size ; middle coxae shorter, but the trochanters long and thin, being longer 

 than the coxae ; hind coxse large and stout, trochanters moderately large ; apical 

 quarter of the front tibiae and all the front tarsi light brown ; apical three- 

 quarters of the middle tibiae and all the middle tarsi brownish ; apical tenth of 

 the hind femora brownish with the part about the knee-joint blackish ; apical 

 third of the hind tibiae brownish, and the hind tarsi blackish brown ; front 

 femora slightly incrassate, middle pair stout, but hind pair very much incras- 

 sate for their whole length and with about thirty little black spines beneath, 

 and these spines form an irregular row which does not extend to the base but 

 which breaks up into two or three rows near the tip ; middle tibiae with two 

 brownish yellow spurs beneath, of which the one towards the front is rather 

 long but the one towards the back is short • hind tibiae with a pair of short 

 brownish orange spurs. Pubescence very short, adpressed, and all pale, but 

 there is a short postero-ventral fringe on the anterior femora, and the tiny 

 pubescence is rather conspicuous on the hind femora and tibiae ; coxae bearing 

 pale down but no sign of bristles. Pulvilli dull orange ; claws small. 



Wings almost hyaline, but appearing rather yellowish about the base 

 because the veins thereabouts are rather orange but the other veins are 

 brownish black ; praefurca starting well before the base of the discal cell but 

 obscured soon after its base by a pale blotch and after that thickened up 

 to the fork ; subcostal vein with minute pubescence above on its whole 

 length ; radial vein starting from the subcostal opposite about three-quarters 

 of the upper basal cell ; cubital vein with a long fork, and its stem only a little 

 longer than its upper branch ; -upper branch of the cubital fork about three- 

 quarters the length of the lower branch and ending nearer to the lower branch 

 than to the radial vein because the lower branch ends before the tip of the 

 wing ; discal cell hexagonal, about three times as long as broad, the fork of 

 the discal vein which forms the base of the discal cell before the cross- 

 veins has its upper branch usually longer than its lower branch, the discal 

 cross-vein being placed at nearly one-third from the base of the cell ; the upper 

 veinlet from the discal cell runs almost straight to the wingmargin, but the 

 second veinlet does not quite reach the margin, and the third one curves down 

 and joins the uiojier branch of the postical vein just before the wingmargin 

 (so that the fourth posterior cell is closed) ; the lower liranch of the postical 

 vein curves down and joins the anal vein well before the wingmargin ; basal 

 cells long, being nearly half the length of the wing, and the upper one slightly 

 longer than the second ; small cross-vein either very short, or sometimes 

 even absent so that the upjier branch of the postical vein may touch the discal 

 cell, and in all cases there is an abrupt (almost rectangular) angle in the 

 upper branch of the postical vein ; ambient vein extended only to the end 

 of the first veinlet from the discal . cell. Alar squamte not small but forming 

 a long triangle or lobe which is dull whitish and has a long but not dense 

 whitish fringe ; thoracal squamae absent, but a very narrow yellow frenum 

 exists. Hal teres orange, knob large. 



? . Very much like the male. Frons slightly wider and with the widening 

 emarginaticn more conspicuous ; face hardly widened below this because the 

 eyes are less rounded off below ; lower half of the back of the head rather 

 more inflated and consequently the whitish beard larger and more con- 

 spicuous. Eyes in life dark green ; facets irregular across the middle line, 

 so that the arcs of facets are broken there. Antennae rather longer than in the 

 male. 



Thorax with the humeri and the mesopleural stripe sometimes more widely 

 and conspicuously orange, so that the humeri may be orange and the meso- 

 pleural stripe extended in equal width right up to the wing-base. 



Abdomen with the orange basal spot varying from very large to small, and 

 with the hind margins of the second to sixth abdominal segments obviously 

 yellow, though the band on the sixth segment or sometimes all the bands 

 may be very narrow, but the bands on the fifth and sixth segments 

 nearly extend to the sidemargins and the band on the fourth segment 

 extends beyond the curve of the disc ; an all black seventh segment is 

 distinct but only about half as long or broad as the sixth, and even a 

 very short eighth segment may be traced, and at the tip there is a pair of 



