96 Records of the Indian Museum. [Vol. XIIT, 



The other head bristles (in both sexes) are: 2 vertical; i post 

 vertical, small; i ocellar, very small; the occipital row normal. 



Thorax brownish yellow, 

 two thin, darker, well sepa- 

 rated median lines, the space 

 between with a slight greyish 

 yellow tinge, the anterior 

 end of this stripe sometimes 

 ¥\G. :^.— Vidnlia cel'vicornis,^->. now. w'mg. brown ; I humeral, I dorso- 



central, i presutural, i pre- 

 scutellar, 2 notopleural, 3 supra-alar [i.e , i pre-alar, i supra-alar, 

 I post-alar), i mesopleural, i pteropleural, i sternopleural. Scu- 

 tellum concolorous, with i basal and i apical bristle. Metanotum 

 shining black, with a narrow yellow median stripe. 



Abdomen conical; brownish 5^ellow with short black pubes- 

 cence and bristles on the sides, also on the hind margins of at 

 least the last two segments. 



Legs brownish 3^ellow, shortly pubescent ; tibiae and tarsi a 

 little paler, a row of long bristles on upper and outer sides of 

 front femora; all coxae with several bristles. 



Wings pale grey; costa yellowish before tip of ist vein, the 

 colour extending hindwards as a narrow yellowish stripe to hind 

 border^ embracing anterior cross- vein. A second stripe, narrow, 

 blackish, extends from costa to hind margin, embracing the poste- 

 rior cross-vein. Costa blackish from the costal end of this stripe 

 to beyond wing tip, the tips of the 2nd, 3rd and 4th veins nar- 

 rowly black infuscated. Anterior cross- vein exactly at middle of 

 discal cell, posterior cross-vein perpendicular or even slightly re- 

 current. Anal cell sometimes yellowish. Halteres pale yellow. 



Described from 2 cf cf and 4 9 9 from Phagu, Simla Hills, 

 18 — 21-V-16 (N. Annandale and S. Kemp). 



In the second c^ specimen, the horns are only half as long as 

 in the type, they bear only one bristle each, and two at the tip 

 of each ; also the single fronto-orbital bristle on the frons is ex- 

 tremely small and weak. 



Bezzi sa^'s the anterior cross-vein is placed after the middle 

 of the discal cell and describes the arista as ''short pilose," 

 whilst Desvoidy describes it as plumulose. These minor distinc- 

 tions do not seem to prevent the species being placed in Vidalia, 

 the principal character of which are the horn-like processes on 

 the head. 



Vidalia melanonotum, sp. nov. 

 9 . Simla District. I^ong. 4^-5 mm. 



Head all brownish yellow, occiput streaked with brown on 

 upper part ; face with a little whitish shimmer ; edges of frons 

 very sHghtly elevated; ocellar spot black; proboscis, palpi and 

 antennae brownish yellow, arista pubescent. Chaetotaxy com- 

 plete. 



