390 Miss G. Ricardo on the 



fine white hairs. Beard white. Palpi pale yellow^ stout, 

 ending iu an obtuse point with black pubescence. Antennce 

 reddish, darlcer at apex, the first two joints with black liairs, 

 the third with a distinct tooth situated about halfway up on 

 the upper border of the first division. Forehead same colour 

 as face, broad, about four times as long: as it is broad, the 

 frontal callus reddish brown, shining, large, nearly square, 

 not reaching the eyes, posteriorly becoming narrow, with a 

 short spindle-shaped extension. Thorax reddish brown, 

 with darker stripes, and between these, yellowish-grey 

 tomentose stripes Avith yellowish-grey pubescence, sides 

 covered with grey tomentum. Scutellum lighter, reddish 

 brown, w^ith some yellowish-grey tomentum, and with black 

 pubescence. Abdomen reddish brown, with black pubes- 

 cence ; the median narrow^ stripe composed of bluish-grey 

 tomentum is often indistinct, the spots on each side are 

 discernible on every segment except the first and last, and 

 more distinct, being clothed with white hairs ; apex of 

 abdomen usually darker in colour ; underside reddish yellow 

 at base, becoming blackish on fore borders of the segments 

 and yellowish on posterior borders, the whole covered with 

 dense, short, whitish pubescence uniformly reddish with 

 white hairs. Wings large, tinged yellow ; veins browai. 



Tabanustransversus, S ? , Walker, List Dipt. v. p. 256 (1854). 



Type (male), type (female), and three other males pre- 

 sented by Col. Bolton. 



A small brown species Avith a grey median stripe and 

 segmentations on abdomen. Forehead with a small yellow 

 callus. Antennse and legs yellowish. 



Length, (J 9, ? 10 mm. 



$ . Face covered with yellowish-grey tomentum, a few 

 pale hairs in centre. Beard pale yellow. Palpi very slender, 

 nearly the same width throughout, pale yellow with rather 

 thick' black pubescence. Antenna the same colour, blackish 

 at apex, the first two joints with pubescence, the third with 

 a distinct angle. Forehead same colour as face, about three 

 times as long as it is broad anteriorly ; it is narrowed at the 

 vertex ; frontal callus yellowish, small, not reaching eyes 

 and with no lineal extension. Thorax cinnamon-brown with 

 darker brown stripes. Scutellum same colour. Abdomen 

 cinnamon-brown, with some darker irregular blotches of 

 colour, the median stripe very distinct, composed of long 

 cone-shaped spots, beginning from the second segment, 

 covered with greyish tomentum, the segmentations narrowly 



