﻿332 ERNEST E. AUSTEN — NEW AFRICAN 



portions of the stripes ; swelling in depression at each end of transverse suture 

 greyish-buff or cream-buff, clothed mainly with pale yellowish or ochreous hairs 

 (on posterior extremity with some black hairs) ; humeral calli greyish pollinose, 

 clothed with whitish hair ; dorsum except as already stated clothed with blackish 

 or black hair, which is longer and finer in cf tnan m Q ; pleurae and pectus 

 light grey pollinose (meso-and sternopleurae except hind borders, or at least 

 anteriorly, appearing darker, i.e., mouse-grey), clothed with whitish or yellowish- 

 white hair. Abdomen : tergite of first (visible) segment with a light grey 

 pollinose patch at each lateral extremity, scarcely visible from above in <$ ; on 

 each side of a median dark area the tergite of this segment, at least in $ , shows 

 an ill-defined paler, mummy-brown or sepia-coloured area, extending outwards 

 along hind margin towards lateral extremity ; in Q the paler admedian areas on 

 first segment are sometimes more distinctly greyish pollinose ; light grey 

 markings on tergite of second segment as described in diagnosis above, the 

 oblique stripes (occasionally interrupted in $ ) extending from anterior margin 

 on each side of middle line outwards to hind margin, and thence to lateral 

 margins ; tergites of third and fourth segments each bearing a large, median, 

 light grey triangle, base of which rests on hind margin ; each posterior angle of 

 these tergites is occupied by a light grey transverse mark, which runs inwards 

 along hind margin of segment and diminishes in depth towards median triangle, 

 with which it may or may not be connected ; the apex of each median triangle 

 is usually rounded off or truncate before reaching the anterior margin of its 

 segment, the interspace thus formed being generally deeper on the third than on 

 the following segment ; posterior angles of tergites of fifth and sixth segments 

 light grey, usually more conspicuously so in Q than in S ; extreme hind 

 margins of fifth and sixth tergites in Q sometimes narrowly grey ; dorsum, except 

 grey markings, clothed with short or appressed black hair ; lateral extremities 

 of tergite of first segment clothed with outstanding whitish hair : posterior angles 

 of five following tergites clothed with glistening whitish or yellowish hair ; 

 remaining light grey markings on dorsum clothed with minute, appressed, 

 glistening, pale straw-yellow hair, a median patch of which, simulating the 

 vestige of a triangle, may also be present on posterior half of fifth tergite in Q ; 

 ventral scute of second segment slate-grey, with a more or less distinct, clove- 

 brown or black, quadrate median area, not quite reaching hind margin, but 

 anteriorly sometimes sending off a prolongation to each side ; remaining ventral 

 scutes black, with, except in case of last segment, narrow light grey hind borders, 

 clothed with glistening whitish or yellowish-white hair ; in case of ventral scutes 

 of penultimate and antepenultimate segments, grey hind borders are much 

 narrower than on preceding segments, and are confined to extreme hind margins ; 

 hairy covering of ventral scute of second segment partly blackish, partly whitish, 

 the blackish hair longer and finer in $ than in Q ; hair on ventral scutes of 

 following segments, except as already stated, black, on third to fifth segments 

 inclusive shorter and more appressed in Q than in $ . Wings : faintly tinged 

 with drab ; veins dark brown or brown ; stigma well-defined and conspicuous, 

 dark mummy-brown. Squamae sepia-coloured, borders darker than membrane. 

 Halteres : knobs dark sepia-coloured, paler at tips ; stalks isabella-coloured, 

 distal extremities darker. Legs : coxae grey, front pair and outer surfaces of 



