844 



Ricardo, Rec. Ind. Mus., IV, p. 194, 191 1 ; Ann, Hist.-Nat 

 Mus. Nat. Hung., XI, p. 170, 1913. 

 Atylotus assamensis, Bigot, Mem. Soc. Zool. France, V, p. 653, 1892. 

 Tabanus assamensis, V. d. Wulp, Cat. Dipt. South Asia, p. 63, 1896. 



Kertesz, Cat. Dipt.; Ill, p. 222, 1908. 



Ricardo, Rec. [nd. Mus., IV, p. 194, 191 1. 



A blackish rather broad medium-sized species with two rather 

 broad hardly separated callus on the broad frontal stripe, with five 

 wide greyish stripes on the thorax, with a series of grey triangles and 

 rather broad bands on the blackish abdomen, and with conspicuously 

 whitish grey tibiae. 



Female. Head slightly broader than the thorax, moderately 

 arched ; frontal stripe yellowish grey but reddish brown about the mid- 

 dle and the vertex, covered with rather numerous yellowish grey 

 pubescence which is intermixed with abundant short brown hairs on 

 the darker parts, and slightly narrowed below and five times as long 

 as its narrowest part or about four times as long as its broadest part ; 

 lower frontal callus reddish brown, moderately convex, large, subquadra- 

 te, usually longer than width, only separated from the eye-margin by 

 very narrow brownish lines but connected below by a very short 

 point with the upper callus ; the upper callus similarity coloured and 

 raised, but slender and longer, about one and a half times as long as 

 the lower callus and wholly three-fifth as wide as that ; frontal triangle 

 rather large, covered with a light grey tomentum but slightly tinged 

 with pale yellowish brown along the suture which separates the cheeks 

 from the frontal triangle, rather flat but. very slightly raised below near 

 the antennal fossae, with a very fine but more or less conspicuous 

 median sulcus ; vertex broader than long, irregularity longitudinally 

 striolate, covered with a grey tomentum but slightly obscured by a 

 short brown or blackish pubescence. Face clothed with light grey 

 tomentum which becomes very slightly yellowish about 'the upper 

 corners of the cheeks, covered with rather abundant and long whitish 



