﻿402 ERNEST E. AUSTEN — NEW AFRICAN TABANIDAE — t>ART III. 



distal extremity than across centre of basal and axillary cells, faintly tinged with 

 brown {extreme base mummy-brown), veins or portions of veins forming distal 

 boundary of basal cells faintly suffused with mummy-brown. 



Head : sides of face (except orbits, which are thickly clothed with dull 

 yellowish pollen) clove-brown, greyish-pollinose, moderately shining but without 

 sharply defined shining calli ; jowls, basi-occipital region, and occiput whitish- 

 grey pollinose (upper portion of posterior orbits yellowish-grey pollinose), jowls 

 and basi-occipital region thickly clothed with whitish hair ; palpi chestnut or 

 burnt-sienna-coloured, proximal joint dark brown on outer side, clothed with 

 whitish hair on under side as in foregoing species ; antennae as in foregoing 

 species. Thorax : three dark longitudinal stripes indistinctly visible on median 

 third of dorsum in front of transverse suture, anterior border of dorsum also 

 with two light grey flecks, representing vestiges of stripes ; hairy covering of 

 dorsum as in foregoing species : pleurae and pectus also as in foregoing species. 

 Abdomen : greyish clove-brown median blotch on first tergite not quite reaching 

 hind margin, of about same width as scutellum, from beneath which it pro- 

 trudes ; tergite of second segment with a small, median, greyish clove-brown or 

 black spot at base, and with a raw-sienna-coloured hind border, which is much 

 narrower in the centre than on each side, where it occupies at least the posterior 

 half of the segment, the anterior margin of the hind border and the posterior 

 margin of the anterior and darker portion of the segment being sinuate ; pale 

 hind borders of tergites of third and fourth segments much less deep than hind 

 border of tergite of second segment, and straight or nearly so, being only slightly 

 deeper on posterior angles than in centre ; when abdomen is viewed at a low 

 angle from behind, second and three following tergites each exhibit a large, dull 

 greyish pollinose median triangle, base of which rests on hind margin, while its 

 apex, at least in case of third and two following tergites, extends to front margin 

 of segment or nearly so ; on third, fourth, and fifth segments greyish pollinose 

 covering forming median triangle also extends outwards along hind border ; 

 tergites of sixth and seventh segments, except lateral borders and hind margins, 

 entirely greyish pollinose ; tergite of first segment clothed with ochreous or pale 

 yellowish hair, except at base immediately adjacent to dark median patch where 

 hair is black ; following tergites clothed on their darker portions with short 

 black hair, and elsewhere with ochreous, pale yellowish, or whitish hair (pale 

 hair on sixth and seventh tergites confined to lateral margins and posterior 

 angles, on fifth tergite pale hair absent from middle third of hind border) ; 

 venter ochraceous-buff (last two scutes, except lateral borders and hind margins, 

 more or less mouse-grey), clothed with appressed, glistening, ochreous or pale 

 straw-yellow hair. Wings : second costal cell pale raw-sienna-coloured ; veins 

 for most part dark brown. Squamae buff. Halteres burnt-umber-coloured. 

 Legs : coxae dark grey, clothed with pale yellowish- white hair ; front femora 

 dark brown (distal extremities reddish), clothed for most part with yellowish 

 hair ; middle and hind femora cinnamon-coloured (more or less dark brown at 

 distal extremities, anterior surface of middle femora also largely dark brown), 

 clothed with yellowish hair ; front tibiae dark brown, more or less reddish at 

 base, middle and hind tibiae burnt-umber-coloured, front tibiae (except tips on 

 inside) and outer and posterior surfaces of middle and hind tibiae clothed with 



