PSILOTA. — CHRYSOGASTBR, 



39 



aud face with sparse whitish soft hairs : viewed from above, a just 

 perceptible wliitish dust-spot about the middle of the frons, 

 contiguous with the eye-margin on each side, and the edges of the 

 face with vague wliitish reflections in certain lights ; upper mouth- 

 border distinctly produced * ; proboscis short, brownish-black. 

 AntennjB brownish-yellow, under side of 3rd joint much paler. 

 Eyes of exactly tlie same vertical height as the head, dark brown, 

 very shortly but rather thickly pubescent ; occiput slightly 

 produced behind the vertex, seneous-black, with a fringe of short 

 white hairs. Thorax shining cyaneous- black with a faint violet 

 tinge, scutellum concolorous, both with sparse very short whitish 



Fig. 9. — Psilota cyanea, Brun., bead in profile. 



pubescence; some rather long whitish hairs at sides, anteriorly. 

 Abdomen of three obvious segments only, the first very narrow, 

 the 2nd, 3rd and 4th subequal, the 5th barely visible ; all wholly 

 cyaneous-black, with short soft pale pubescence, belly similar. 

 Legs black ; knees, tips of tibite, and anterior tarsi brownish- 

 orange, hind tarsi darkened above ; hind femora and all tibiae with 

 a little pale pubescence. Wings almost clear ; stigma pale yellow; 

 halteres reddish-brown. 



Length, 4^ mm. 



Described from two § $ ; Gangtok, Sikkim, 6150 ft., 9. ix. 1909, 

 type ; and Kurseong, 5000 ft., 10-26. ix. 1900 {Lynch). lu the 

 Indian Museum. 



Genus CHRYSOGASTER, Meig. 



Chrysogaster, Meis'en, lllig'. Ma;^'. ii, p. 1^74 (1803). 



Campeneura, Kondani, Dipt. Ital. Prod, i, p. 52 (1856). 



Campinexira, id., op. cit. ii, p. 12 (1857). 



Cryptinetira, Bigot, Rev. Mas'. Zool. (2) xi, p. 308 (1859). 



Cryptoneura, id., Ann. See. Ent. France, (6) ii, Bull. p. xix (1882). 



Camptoneura, Williston, Bull. U. S. Nat. Mus. No. 31, p. 31 (1886). 



Gekotype, Einstalis solstitialis, Fall, (as coemiteriorum , Fabr.) ; 

 by designation of Zetterstedt, Dipt. Scand. ii, p. 816 (1843). 



A generic character according to Verrall. 



