1911.] G- RiCARDO : The Oriental Tahanidae. 383 



Chrysops dcsignata, 9 d' , sp. n 

 (Plate XV, fig. i.) 



Type female from Sarah, Nepal, 24-xi-o8, in Indian Museum 

 coll. and another from Yunnan, W. China ; type male from Jaulasal. 

 Naini Tal district. 



9 . Abdomen yellowish, marked with black on the first 

 three segments, bearing onh^ three yellow spots on the third 

 segment. Wings with cross-band and apical spot, the former 

 with a well-marked sinus on posterior border, its outer border 

 irregular. Antennae long, cylindrical. Length 9 mm. 



Face yellowish, the facial tubercles shining, blackish brown, 

 reaching the oral opening but bearing a large yellow stripe in the 

 centre of face, lower part of cheeks black, with yellow hairs. 

 Palpi reddish yellovA' with scanty yellowish pubescence. Antennae 

 long, cylindrical, the first joint a little longer than the second one, 

 reddish yellow with black pubescence, the second and third 

 blackish, the second with black pubescence, the third joint the 

 longest of the three but barely as long as the first two joints 

 together. Forehead same colour as face with yellow pubes- 

 cence, the frontal callus shining, blackish brown, transverse, not 

 reaching the eyes, with an impressed line in the centre and slightly 

 produced toward the antennae, ocelli visible at vertex which 

 is not darker in colour. Thorax blackish brown, with a very 

 broad yellowish grej^ tomentose median stripe divided in two by 

 a narrow brown line, sides yellowish clothed with bright yellow 

 pubescence, which is also present on the dorsum as short scanty 

 pubescence. Scutclliim yellowish grey, blackish in the centre but 

 probably this is due to denudation, with darker pubescence. 

 Abdomen yellowish, paler yellow on the first two segments, on the 

 following segments more reddish yellow, with the apical slightly 

 darker, pubescence yellowish, thick on the apical segments ; the 

 black markings consist of a narrow band on the posterior border 

 of first segment widening in the centre into a broad median spot 

 reaching the anterior border, with concave sides, on the second 

 segment of the ordinary chevron-like black spots meeting on the 

 anterior border, with likewise a narrow band on the posterior bor- 

 der, on the third segment the black chevron-like spots are present 

 but broader, not meeting on the anterior border, the sides and pos- 

 terior border have black bands, so that the yellow colour remains 

 as three large spots, the middle one irregularly triangular, the side 

 ones oblong, large, on the fourth segment two small black triangular 

 spots with their apices pointing downwards are present on the 

 anterior border which is also blackish at the sides ; under side 

 wholly yellow. Leg^ reddish yellow, the coxae, femora and apical 

 joints of tarsi blackish. Wings hyaline with brown fore border 

 reaching the apex, at base extending slightly into the basal cells, 

 and with a brown cross-band which reaches the anal cell ; the 

 fifth posterior cell is largely hyaline, the lower border of band 

 almost straight not extending into the basal cells, its upper border 



