neio Species o/Tabani. 317 



jfive times as long as broad and the same width throughout, 

 above the antennaj shining reddish yellow, convex, with a 

 median furrow ; the frontal callus the same colour, nearly 

 square, reaching the eyes and continued as a broad stripe 

 nearly reaching the vertex; the forehead covered with 

 yellowish tomentum, darker on the vertex. Eyes with no 

 bands. Thorax brownish, with two fulvous lateral stripes 

 bordered by a black one, all indistinct; the dorsum with grey 

 tomentum and short fulvous pubescence, the sides with 

 yellowish tomentum and black hairs, the breast with white 

 pubescence; the scutellum the same colour as the thorax. 

 Abdomen reddish ; the black stripe begins from the first 

 segment and is continuous to the apex, its borders not very 

 clearly defined ; the pubescence on the dorsum is black ; the 

 fourth, fifth, and sixth segments are yellowish and have 

 yellow hairs at the sides, the seventh is wholly black, all the 

 segments on the lateral margins are black ; the underside 

 wholly reddish, with yellowish pubescence. Legs reddish 

 yellow ; the anterior femora brown, the tibise pale yellow, with 

 white pubescence ; on the anterior tibise the apex is brown, 

 the fore tarsi brown, the pubescence on the femora black. 

 Wings clear, pale yellow on their extreme outer border, the 

 veins and stigma yellowish, the appendix short but stout. 



Tahanus nigrostriatus, ? , sp. n. 



Type (female) from Plateau of Zomba, Nyasaland {B. 

 Sharpe), 97. 46, and a series of females from the same place. 



A species quite distinct from any other African described 

 species, with a long, narrow, bright chestnut-brown abdomen, 

 which has a distinct black median stripe. Wings hyaline, 

 tinged with brown, usually with an appendix, but this seems 

 a variable character in this species. 



Length 17. \ mm. 



Head broader than thorax. Face reddish, covered with 

 greyish-white tomentum and some white hairs ; on the cheeks 

 the ground-colour is more apparent; beard whitish yellow. 

 Palpi yellow, with some black pubescence, long, only slightly 

 broader at base, ending in an obtuse point. Antennte red, 

 sometimes darker at the apex (in one specimen only the base 

 of the third joint is red) ; tooth fairly prominent; the first joint 

 oblong, the second small, both with black pubescence. Fore- 

 head brownish, about four times as long as broad and slightly 

 narrower anteriorly; the subcallus reddish, with yellow-grey 

 tomentum round the base of the antennaj; the frontal callus 

 dark brown, shining, convex, hardly reaching the eyes, 



