278 On new Species o/Tabani. 



the Matives in Somaliland, and stated by Col. Swayne to be 

 by far the worst fly on the Webbe, the natives stating that 

 uhen numerous it kills horses and camels. 



A narrow-bodied brownish species with two distinctly 

 separated calli on the broad forehead and with round grey 

 spots on each side of the abdomen, clear wings, yellowish 

 legs and antennfe. It resembles a Hnematopota in general 

 appearance and is related to Tabanus sufis, Jaennicke, but 

 distinguished from it by the large, convex, transverse, black 

 frontal callus, with both borders straight, not indented ; the 

 eyes apparently not striped ; the lateral spots of the abdomen 

 are round, isolated, not obliquely placed, touching the posterior 

 borders of the segments as in the above-mentioned species. 



Length 13 ram. 



Head wider than the thorax. Face greyish with long 

 white hairs ; beard white. Palpi white, short, stout at base, 

 ending in a short point, hairy with short Vjlack pubescence 

 and some silvery-white hairs. The reddish-brown band on 

 the upper part of face bearing the antenna is covered with 

 grey tomentum. The first and second joints of antennae 

 yellow with black pubescence ; the third joint is wanting. 

 Forehead broad, the same width throughout, hardly more 

 than twice as long as it is broad, covered with yellowish- 

 brown tomentum ; the frontal callus large, black, shining, 

 very convex, transverse, reaching the eyesj beyond and dis- 

 tinctly separated from it is an irregular, almost heart-shaped, 

 black spot slightly indented in the middle, and another 

 smaller larownish spot on the vertex. Eyes bare with ap- 

 parently no stripes. Thorax blackish brown, with grey 

 tomentum and with two greyish indistinct stripes and the 

 sides greyish, the dorsum with very scanty black pubescence ; 

 the breast and sides reddish, covered with grey tomentum and 

 ■white pubescence; the scutellum reddish brown, shining. 

 Abdomen long and narrow, dark brown, more reddish brown 

 on the basal segments; the first segment with a small median 

 grey spot, and two oval grey spots on sides, of grey tomen- 

 tum ; every other segment, except the last one, with a distinct, 

 round, isolated, grey spot on each side and traces of a median 

 grey ppot, wliich is most distinct on the second and third 

 segments ; the dorsum is almost bare of pubescence, the seg- 

 mentations narrowly greyish ; underside brownish, with 

 greyish-yellow segmentations. Legs reddish yellow, fore 

 tarsi and apex of fore tibiae darker. Wings hyaline, veins 

 and stigma yellowish (the two collected by Capt. Drake have 

 an appendix), the first posterior cell is widely open. 



TTo be continued.' 



