488 



Head green and yellow; labium buff, subquadrangular, the shal- 

 low cleft apparently extending to the base of the piece ; palpi broad ; 

 antennae dull brown, the first segment much shorter than the second 

 and with a pale ring at the distal end; postclypeus metallic green or 

 black, the anteclypeus and labrum, except a small short black stripe 

 on the lateral margins, pale yellowish green ; exposed portions of the 

 mandibles, the genae as far dorsad as the fronto-clypeal suture, yel- 

 low, the remainder of the front and the vertex, metallic green; occiput 

 and postgenae largely yellow; compound eyes brown. 



Thorax metallic green above, yellow or buff below, the pronotum 

 usually black, including the cephalic, median, and caudal lobes, the 

 proepimera black on the dorsal half, the ventral half buff; mesosupra- 

 episterna metallic green, the infraepisterna black on the dorsal half, the 

 remainder yellow ; mesepimera metallic green except the cephalo-ven- 

 tral shoulder, which is yellow ; dorso-caudal angles of the metepimera 

 with a triangle of green, remainder of the metapleura and the inter- 

 sternum pale yellow ; legs striped, black and yellow ; coxae entirely buff, 

 trochanters, at least the middle and hind ones, with a black dorsal 

 stripe ; middle and hind femora with three black stripes, a ventral and 

 two dorsal, and three yellow stripes, the front femora, however, with 

 two black stripes, the cephalic one including the cephalo-ventral row of 

 setae; tibiae with a single ventral black stripe including the cephalo- 

 ventral row of setae ; tarsi black, the claws long, black, and deeply bifid 

 at the tip ; wings clear, with sixteen postnodal cross-veins in the front 

 wing and thirteen to fourteen in the hind; Mo arising between the 

 fourth and fifth postnodals in the front wing and between the third 

 and fourth in the hind; stigma surmounting from slightly less than 

 two to two and one-half cells. 



Abdomen with the dorsum of terga i-io dark, the basal segments 

 metallic green, the apical segments dull black ; lateral margins of terga 

 1-8 pale yellow or buff, the color extending well towards the meson on 

 the base of segments 3-6; sterna one and ten yellow, 3-9 inclusive, 

 black, shining; anal appendages long, black, the superiors pale at the 

 base, the meso-ventral margins with a large basal tooth (Figs. 131, 

 132) and a number of smaller ones distad of this; dorso-lateral sur- 

 faces of the appendages coarsely tuberculate; inferiors longer than the 

 superiors, the tips bent mesad, approximate and finely pilose ; parameres 

 of the eighth sternum small, subquadrangular; bases of the inferiors 

 large and apparently fused. 



Female. — Color similar to that of the male. 



Head similar to that of the male. 



