186 bombyliidjE. 



Eedescribed from a S from Peshoke Spur, Darjiling Distr. 

 (Lister); 3 $ § from Rungpo, Sikkim, 1400 ft., 6. ix. 1909 ; 2 

 $ 2 from "Sikkim"; 1 $ from Mergui; and two J J from 

 Sadiya — all in the Indian Museum; Sarawak; Philippines. 



Type in Genoa Museum. 



139. Hyperalonia aurantiaca, Gukr. 



Anthrax aurantiaca, Guerin, Icon. Regne Anim. iii (Ins.), p. 539, 



pi. xcv, fig-. 6 (? 1843). 

 Hyperalonia aurantiaca, Brunetti, Rec. Ind. Mus. ii, p. 440 (1909). 



Head with frons a little narrower on vertex than above antenna3, 

 where it is barely one-third the width of the head ; dark olive- 

 brown with black pubescence, intermixed with small narrow 

 bright yellow scale-like hairs, which are most numerous on the 

 lower part ; face yellowish, becoming pale creamy white about 

 mouth-opening and on lower part of head ; rather closely covered 

 with similar yellow pubescence to that of the frons, but more 

 hair-like, especially round the mouth-opening; proboscis as long 

 as height of head, blackish brown, with a few whitish hairs ; 

 antenna? black, 1st and 2nd joints bristly ; occiput black, with 

 short yellow scale-like hairs around eye-margins. Thorax black, 

 with bright yellow pubescence as in H. sphinx ; paler hairs on 

 sternopleurae ; posterior calli dark reddish brown ; scutellum dark 

 reddish brown, blackish at base, covered with short yellow hair, 

 and the usual marginal row of spines. Abdomen black, with black 

 pubescence, clothed almost entirely with yellow scale-like hairs, 

 which are apparently absent from a broad median space from base 

 to tip ; a bunch of concolorous elongate scales at each side of 

 base of abdomen, and a patch of silvery-white scale-like hairs at 

 each side, contiguous to the margins, of the 0th and 7th segments ; 

 sides of abdomen with coarse black hairs. Venter black, with 

 silvery-white scales ; almost wholly covering 2nd and 3rd seg- 

 ments and continued broadly in the median line over 4th and 5th 

 segments, a median line also of sparse long fine; white hairs ; 

 genitalia concealed, apparently normal. Legs very dark brown, 

 nearly black ; coxae ash-grey, with long pale yellowish hairs and 

 some strong long black spines ; femora and tibiae with small 

 closely applied grey scales, difficult to perceive on middle femora 

 and fore tibiae ; fore femora and tibiae without obvious bristles, 

 but these are present on posterior femora and tibiae ; tarsi black, 

 pubescent. Wings moderately dark brown on anterior half, the 

 colour fading to grey posteriorly, with a violet iridescence in 

 certain lights ; sometimes the discs of the cells on the hinder 

 half of wing a little paler; 2nd posterior cell distinctly wider at 

 base than tip ; halteres brownish yellow ; alar squamae with a 

 fringe of long yellow scales. 



Length, 11-13 mm. 



Pedescribed from a perfect $ from Siripur, Saran, North 

 Bengal, 25. ix. 1910 : it occurs also at Chapra, Bengal (Mackenzie). 



