234 



with black bristles ; latter also with a fringe of yellowish scales, 

 which become white at their tips ; 7th segment covered with 

 yellowish scales and black bristles, hind border with a dense 

 fringe of long snow-white scales ; venter black, wholly covered 

 with small pale yellowish scales. Legs black ; femora and tibiae 

 covered with yellowish scales, middle tibiae brownish yellow- 

 tarsi black, joints distinct. Wings quite clear, vitreous, subcostal 

 cell brownish yellow ; base of 3rd posterior cell more sinuous 

 than in cornpacta ; halteres chalk-white. 



Length, 9 mm. 



One specimen (? $ ) in the British Museum from Dehra Dun, 

 Western Himalayas, 1907 (Lt.-Col. Wyville Thomson). 



Genus ANTHRAX, Scop. 



Anthrax, Scopoli, Ent. Cam. p. 358 (1763) ; Brunetti, Rec. Ind. 



Mus. ii, pp. 451, 455 (1909). 



Villa, Lioy, Atti Istit. Veneto, (3) ix, p. 732 (1864). 

 Hemipenthes. Loew, Bevl. Ent. Zeits. xiii, p. 28, note (1869). 

 Dipalta, Osten-Sacken, Bull. U.S. Geol. Surv. iii, p. 236 (1877). 

 Chrysanthrax, Osten-Sacken, Biol. Cent.-Amer., Dipt, i, p. 121 



(1886). 



Isopenthes, Osten-Sacken, op. cit. pp. 80, 96. 

 Pcecilanthrax, Osten-Sacken, op. cit. p. 119. 

 Stonyx, Osten-Sacken, op. cit. pp. 80, 94. 

 Thyridanthrax, Osten-Sacken, op. cit. p. 123. 

 Hyalanthrax, Osten-Sacken, op. cit. p. 134 (1877). 

 Aspiloptera, Kiinckel, Bull. Sci. France et Belg. xxxix, p. 145, note 



(1905). 

 ? Paranthrax, Bigot, Bull. Soc. Ent, France, (5) vi, p. Ixvi (1876). 



GENOTYPE, Anthrax morio, F. ; by Rondani's designation. 



Head semicircular, inflated behind, but slightly inarched at the 

 middle, as broad as or a little broader than thorax ; face very 

 short, sometimes conically projecting or gently convex ; proboscis 

 short, withdrawn into the large mouth-opening, labella rather 

 broad ; palpi small, thin, cylindrical, apparently one-jointed ; three 

 ocelli ; eyes in both sexes wide apart ; frons rather narrower in 

 c? , an indentation at middle of hind margin in both sexes. 

 Antennae porrect, short, wide apart at base ; 1st joint short, 

 cylindrical; 2nd cup-shaped; 3rd varying from elongate conical 

 to flattened onion-shaped, with an apical microscopic bristle, 

 never with an apical pencil of hairs. Thorax quadrate, with 

 rounded angles, broadest behind, with indistinct preesutural but 

 distinct postalar bristles. Scutellum broad, short, bare of bristles ; 

 metanotum concealed. Abdomen flat, oblong, longer than thorax, 

 7-segmented. Genitalia small, mainly concealed, placed asym- 

 metrically ; ovipositor with a circlet of short blunt spines. Legs 

 moderately long, hind pair lengthened and often bearing con- 

 spicuous scaly pubescence ; all femora and tibiae with short 

 scaly pubescence in some species ; fore tibiae sometimes quite 

 bare, sometimes with small spicules; posterior tibiae with 



