300 SYKPHID.5:, 



above aiiteiinal prominence, contiguous witli eyo-uiiirgins. Thorax 

 shining black, with a pair of median grey dust-stripes, extending 

 well beliind suture. A lemon-yellow spot on humeri, at ends of 

 suture, above wing-bases and on hind corners of dorsum. Pleurae 

 witli the usual spots on mesopleura andsternopleura, the 3rd spot 

 immediately in front of wing-base, contiguous with mesopleura. 

 Scutellum yellow, with a large, clear-cut black spot in middle. 

 Thoi-acic pubescence brownish-yellow. Abdomen shining black ; 

 2nd, 3rd and 4th segments each with a very clear-cut pair of 

 narrow, lemon-vellow spots forming an arc but distinctly separated 

 in the middle line, not reachiug side margins, their inner ends 

 near anterior margin of segment, their outer ends near hind 

 corners ; 4th segment with a narrow yellow^ hind margin, 3rd and 

 5th with traces of such. 5th segment with a pair of curved 

 yellow spots of a similar nature but placed diagonally, their upper 

 ends toAvards middle of anterior margin. Venter with a pair of 

 transverse yellow spots on 3rd and 4th segments. Pubescence of 

 abdomen mainly black, but longer and Avhitish on basal corners. 

 Legs orange to tips ; coxse and trochanters black, basal half of 

 tibiae pale yellow ; pubescence yellow. T'T7«r/s pale grey ; yellowish 

 anteriorly on basal half; a rather large, distinct, but ill-defined 

 blackish spot over 2nd vein just beyond anterior cross-vein. 

 Squamae orange, margins and fringe darker ; halteres orange to 

 yellow. 



Length, 14 mm. 



Described mainly from a 5 from Bishopabad, Bihar, 19. v. 1911 

 {N. C. Rothschild). A'^errall's description is also drawn upon for 

 the c? 1 as the species is common in Europe. It is also known 

 from N. Africa and Siberia. The above $ in the British Museum 

 is the only specimen from the East which I liave seen. 



228. Chrysotoxum fuscomargiratum, sp. nov. 



5 . Very like C. festivum, L. Smaller; the grey thoracic dust- 

 stripes ending at suture ; the sternopleural spot whitish ; the 

 scutellar blackish spot distinct but its outline less well defined ; 

 the abdominal spots more ochraceous; hiiul margins of 4th and 

 5th segments more broadly ochraceous; femora narrowly blackish 

 at base, hind pair inconspicuously blackish -brown about the 

 middle. Wings uniformly moderately dark brown nearh^ to Srd 

 vein, without trace of a subapical blackish spot. 



Length, 9 mm. 



One 2 from Chitral {11. Hill^. In the British Museum. 



229. Chrysotoxum quadrifasciatum, sp nov. 



$ . Head: frons from vertex to antennae shining black, with a 

 pair of lai'ge, oval, yellow-grey dust-spots contiguous with eye- 

 margins, placed a little below middle of frons. Antennae black, 

 2nd joint a little jiale towards tip on inner side. Pace brownish- 



