138 STRATIOMYID^. 



on the disc of the second and third segments, and with a broad dentate 

 greenish yellow margin ; this greenish yellow margin leaves the basal segment 

 black except at the extreme hind corners, the second segment with a broad 

 black trapezoid occupying nearly all the front margin but sloping down on 

 the sides to the middle third of the hindmargin ; the third segment with a 

 very similar but more regular black trapezoid occupying only the middle 

 three-fifths of the front margin ; the fourth segment with a very similar but 

 larger black trapezoid which is less contracted on the hindmargin and 

 occupies there only half the segment, and this trapezoid on the fourth segment 

 is less sharply defined than the one on the third segment^ the fifth segment 

 has a broad shallow black diamond, leaving all the margm equally greenish 

 yellow ; abdomen with a narrow raised margin. Pubescence on the disc very 

 inconspicuous as it is composed of very short depressed black bristles, but 

 there are a few longer yellow hairs about the basal corners. Belly greenish 

 black, but not easily visible in the specimen described. 



Legs entirely orange from the base of the coxae to the tip of the tarsi and 

 pulvilli, but the claws black at the tip. Pubescence pale yellow, inconspicu- 

 ous, but forming a moderate fringe on the anterior femora. 



Wings with a slight yellowish tinge ; all the veins near the costa, the stem 

 of the postical vein and its upper branch as far as the small cross-vein, the 

 veins round the discal cell, and just the base of the anal vein strong and 

 orange ; discal vein up to the discal cell and the other veins faint ; the 

 veinlets issuing from the discal cell do not quite reach the wingmargin and 

 the upper one vanishes on its basal half, while a faint indication of a veinlet 

 existing between the second and third veinlets causes a slight bend in that 

 side of the discal cell ; radial vein short but distinct ; cubital vein forked at 

 about half the length of the submarginal cell ; anal cell closed well before the 

 wingmargin through the lower fork of the postical vein being bent down 

 rather sharply. Thoracal squamse large, whitish yellow with no obvious 

 margin but bearing all over the disc rather long whitish yellow i)ubescence 

 and a similar rather long marginal fringe. Halteres with rather large 

 greenish yellow knobs, stem brownish at the base. 



$ . Not much like the male though similar in size and general appearance. 

 Frons and face almost equally wide from occiput to mouth, though the face 

 is slightly the broader, both mainly luteous but the upper part more orange 

 with a large blackish space on the ocellar triangle and its neighborhood; 

 frons shining luteous, practically bare though some tiny black hairs occur 

 about the middle and also some short tiny yellow hairs at the middle of the 

 sides, while a small but conspicuous tuft of short yellow hairs occurs on each 

 side just above the antennte ; the lower margin of the blackened ocellar 

 space may be very much blurred and may emit two vague darkened lines out 

 towards the tufts of yellow pubescence ; there is also a narrow blackish middle 

 furrow running from the lowest ocellus to the antennae, and the furrow extends 

 below them but is no longer blackish • the lower margin of the frons is marked 

 off by a shallowly arched furrow rather above the antennae, and the sides of 

 this furrow (on which stand the tufts of pale pubescence) are blackened ; 

 another furrow extends on each side from the middle of the previous arched 

 furrow down in an arch to each eyemargin, and the space enclosed near the 

 eyes by these furrows is slightly puffed and is quite bare, while the face (which 

 here has no bandlike eyemargin) may be a little obscured in colour except on 

 the bare yellow middle line, and bears silky yellow pubescence which is con- 

 spicuous but not dense and which forms a slight patch at the eyemargins ; 

 the absolute upper mouthmargin is blackish ; jowls rather small, and bearing 

 short yellow pubescence ; all round the eyes there is a yellow bandlike margin 

 narrowly interrupted at the middle of the vertex, which is bare except for a 

 microscopical shinino- golden recumbent pubescence ; proboscis large and 

 dilated, black ; palpi small, yellow, knobbed, and bearing scattered short 

 yellow pubescence. Eyes comparatively small. Antennas as in the 

 male. 



Thorax jeneous black, rather dull from dense punctuation, and closely 

 covered on the disc (though not quite closely enough to obscure the ground 

 colour) with short almost adherent golden pubescence ; al:)Out the sides and 



