iQii-] G. RiCARDO : Revision of the species of Tahanns. 251 



silvery white. Palpi obscurely reddish, with some gre>- tomeiitum 

 and with thick black pubescence, stout, ending in an obtuse point. 



Antennae incomplete, the first two joints dull red with black 

 pubescence. Forehead narrow, about seven times as long as it is 

 broad, very slightly narrower anteriorly, black, with greyish 

 tomentum, and some ])lack hairs, the frontal callus brownish black, 

 club-shaped, a little protuberant, long, stout, not quite reaching the 

 eyes, prolonged in a stout short linear extension. Thorax black, 

 with grey tomentum, disposed as indistinct stripes, pubescence 

 sparse, black, with some appressed fulvous hairs intermixed, shoul- 

 ders with longer black hairs, at base of wings some tufts of white 

 hairs. ScuteUum thickly covered with grey tomentum and with 

 some white pubescence on its outer border. Breast black, covered 

 with grey tomentum and with white pubescence. Abdomen black, 

 the first segment with only some white hairs at sides, the second 

 and third with indistinct grey tomentose narrow bands on their 

 posterior borders, silvery white hairs only on the sides, the fourth 

 with a wider one, covered with silvery white pubescence extending 

 in the middle as a short triangle not reaching the anterior border, 

 on the fifth a broad median white-haired spot ; the dorsum is co\'ered 

 elsewhere with close black pubescence ; under side black, covered 

 with grey tomentum and short silvery white pubescence, the last 

 three segments blackish without the lighter tomentum and pubes- 

 cence. Legs black, the fore tibiae on their basal half, the other 

 til)iae on their basal two- thirds yellowish white, the pubescence whitish 

 on fore coxae, on femora black with white hairs intermixed on under 

 side chiefly, on pale parts of tibiae white, on their dark parts and on 

 all tarsi black. Wings hyaline, very slight traces of brown shading 

 on the cross-veins, stigma and veins brown, no appendix. 



cy . Male is browner, the abdomen conical brownish black, 

 not so thickly covered with black pubescence, scutellum brownish 

 like the thorax with rather thick brownish pubescence. Legs with 

 wholly black pubescence, the fore tibiae only yellowish white on 

 their basal third. Face brown with brownish black pubescence, 

 the palpi brownish with black hairs. Beard blackish. Antennae 

 brownish black, the third joint long, slender, with a fairly prominent 

 tooth at base. Kyes large, convex, with large facets on their upper 

 surface reaching to the middle of the frontal triangle, the small 

 ones occupying the lower part and continued as a narrow border 

 to the vertex. 



Tabanus persis, cf , w. s]). 

 (Pi. xiv, fig. 24.) 



Type male and female f roni vSeistan , Persia, on the Afghanistan 

 frontier, in Mr. Howlett's coll., and others from same locality. The 

 females are labelled In' the collector, A. S. Leese, as taken off camels 

 or horses and common, the males as uncommon and taken oft" 

 horse, and off gauze door. 



This species, Atylotus-Wkv in the shape of head though no hairs 

 are to be discovered on the eyes with a letrs, does not a])pear to 



