182 STBPnTD.E, 



scarcely conspicuous anteniial prominence; upper half of eyes 

 Avitli much larger facets and short, rather dense, dark brown 

 pubescence, lower part of eyes bare, facets very small and with 

 small dark spots. Vertical triangle rather small, black with black 

 ])ubesceuce ; ocelli large, orange to red, very ])iominent. Frons 

 and face wholly covered with close yellowisli-grey tomentum, 

 former with long black pubescence, latter with short pale yellow 

 pubescence; mouth-opening brownish-orange; cheeks verv small, 

 covered with yellowish-grey dust. Occiput grey, with pale yellow- 

 pubescence on lower part, dying away behiud middle of eyes; a 

 tew short black hairs behind vertex. Antennas bright orange, tip of 

 3rd joint a little darker; arista orange, bare, tip black. In $, 

 frons and face widening distinctly from top to bottom, at level of 

 antenme one-third \\ idth of head ; frons with black pubescence 

 (shorrer than in d ) down to base of antennae. Thorax : dorsum 

 and pleurje wholly covered with yellowish-grey dust ; dorsum with 

 four very conspicuous, equidistant, shining black, moderately 

 narrow stripes from anterior to hind margin, the outer ones nar- 

 rowed behind. Dorsum (including black stripes), pleurae and the 

 brownish-yellow scutelluiu with dense yellow pubescence ; centre 

 of scutellum with conspicuous black pubescence. In § , gi'ound- 

 colour of dorsum often more greyish. Abdomen techni- 

 cally black ; 1st segment pale yellow ; 2Gd with two large, 

 oblong, j'eilow spots practically filling the whole surface except 

 (1) narrowly along anterior margin towards sides; and (2) on 

 the side margins except just beyond middle, where the spot 

 joins the yellow venter; and (3) more or less broadly on the hind 

 margin, from which latter a narrow median line ascends nearly or 

 quite to the anterior margin of tiie segment. In some specimens 

 the 2nd segment is practically entirely yellow. 3rd segment with a 

 pair of large oval, oblong, or diamond-shaped spots placed a little 

 obliquely from middle of anterior margin (narrowly separated 

 from each other) to middle of side margins, but often spreading 

 over anterior corners of segment or nearly filling whole surface, 

 pei-liaps leaving an indistinct median line and traces of a blackish 

 hind margin. 4th segment dead-black, with a curved bright 

 yellow spot, convex side forward, attenuated in middle (occasion- 

 ally interrupted there and in that case forming two small oblong 

 spots), reaching across middle of segment, just touching anterior 

 margin : anterior corners and hind margin of segment shining 

 black ; sometimes there are, instead of a band, a pair of large, 

 well-defined, obliquely placed, pale yellow spots, the ground-colour 

 of the segment being brownish-orange instead of black. Pubes- 

 cence of abdomen mainlj-' following ground-colour, longer on 2nd 

 segment and the whole of the margin, practically all yellow on 

 4th segment. Venter mainly yellowish on anterior half, blackish on 

 remainder, pubescence sparse, pale yellow. In $ , 1st segment 

 of abdomen pale yellow ; 2ud with a transverse curved yellow band 

 just below anterior margin, broadening at sides, sometimes taking 

 the form of two elongate spots, rounded and rather narrower at 

 their inner ends, narrowly separated, but filhng all side margins 



