

3 * 



214 BOMBYLIIDjE. 



scales and black hairs, traces of a marginal fringe of not very 

 strong bristles ; a bunch of yellowish-grey elongate scales below 

 each posterior callus. Abdomen black, 1st segment short, covered 

 at each side with a bunch of elongate, dirty milk-white scales ; 

 2nd and following segments covered (except, perhaps, more or less 

 narrowly at base) with whitish hair-like scaly pubescence, and 

 with a transverse row of black bristles along, or just behind, the 

 middle of each segment ; some parts of the surface seem to be 

 covered with minute black scales ; a bunch of elongate dark brown 

 scales ou hinder half of sides of 2nd segment, a similar bunch of 

 blackish-brown scales on sides of 4th segment, and others around 

 the tip of the abdomen ; sides of abdomen (except when occupied 

 by brown scales) covered with elongate whitish scales. Venter 

 blackish, hind margin of segments narrowly pale brown; basal 

 half of surface with ragged whitish scaly pubescence and black 

 bristles, hinder half apparently with less pubescence, but tip with 

 long black bristles. Genitalia concealed, but covered with dense 

 long bright orange scales. Legs black ; femora with more or less 

 greyish minute depressed scales on hinder sides and a row of 

 black bristles below ; tibise with usual bristles and covered closely 

 with dark brown scales. Wings pale grey ; costal and subcostal 

 cells brownish yellow, the colour spreading more faintly hindwards 

 and basally ; veins dark brown, those in centre of wing distinctly 

 and narrowly infuscated, the remainder just perceptibly suffused 

 also, except tips of 2nd and 3rd veins ; halteres black, with milk- 

 white clubs. 



Length, 15 mm. ; expanse, 42 mm. 



Described from a single specimen (probably a $ ) in the 

 British Museum, from Lahore, 1910 (G. H. Gaiger). 



( Genus ARGYRAMffiBA, Sch. 



Argyromc&ba, Sckiner, Wien. Ent. Monats. iv, p. 51 (1860) ; E. & L... 



Coucke, Ann. Soc. Ent. Belg. xxxviii, p. 286 (1894). 

 Agyramceba, Kertesz, Cat. Dipt, v, p. 59 (1909) ; Brunetti, Rec. 



Ind. Mus. ii, p. 448 (1909). 

 Spogostylum, "Williston {nee Macq.), Man. N. Amer. Dipt., 2nd Ed. 



p. 65 (1896). 

 Coquillettia, Williston, Man. N. Amer. Dipt., 2nd Ed. p. 65 (1896). ; 



Genotype, Anthrax trijmnctata, TVied. ; by Coquillett's designa- 

 tion (1910). 



This genus differs from Anthrax in the following characters : 

 (1) the presence of a style to the 3rd antenual joint, distinctly 

 bisected by a suture and with a pencil of hairs at its tip, this 

 being the most constant generic character ; (2) the face is shorter, 

 not at all protruding, but rather withdrawn ; (3) the male 

 genitalia are practically symmetrical, not asymmetrical as in 

 Anthrax and Exoprosopa ; (4) the ovipositor, the tip of the abdo- 

 men being covered with rather long silky hairs as in Bombylim 



