African Fhlebofotnic Dijjtera, 281 



clothed with minute^ appressed, deciduous, pale yellow hairs ; 

 pectus, pleurae, and sides of dorsum yellowish grey ; scutel- 

 lum yellowish grey, with a sepia-coloured blotch on each 

 side of middle line, starting from base, but not reaching 

 lateral or hind border. Ahdomen : dorsum clothed with 

 minute, appressed, yellowish hairs ; second segment with a 

 transversely elongate smoke-grey blotch on anterior border, 

 extending on each side of middle line to a distance half-way 

 or less between middle line and lateral margin of segment ; 

 median stripe on second segment sometimes slightly expanded 

 posteriorly ; venter clothed with minute, appressed hairs, 

 somewhat paler than those on dorsum, hind margins of 

 segments smoke-grey, segments elsewhere either mouse-grey, 

 w ith a more or less ill-defined, brownish, longitudinal median 

 stripe, or dark brown, and, in case of tirst four segments, 

 grey on sides. IVrngs : a series of sometimes large and 

 conspicuous, sometimes more or less indistinct light blotches 

 on hind margin in distal marginal angles of all posterior 

 cells, followed by an elongate light blotch occupying distal 

 angles of axillary and anal cells, and proximal marginal 

 angle of fifth posterior cell; series of detached obbque light 

 marks across posterior cells distinct, and usually connected 

 with marginal blotches j light marks in basal cells of normal 

 t}'pe; zigzag mark across anal and axillary cells and light 

 loop surrounding proximal angle of axillary cell clearly 

 defined, and connected by a less distinct pale border running 

 along or close to anal angle ; light blotch present on sixth 

 longitudinal vein, beyond zigzag mark ; rosettes compound, 

 that is with centres formed by more or less detached light 

 spots ; sometimes a small and more or less indistinct light 

 fleck on or close to upper branch of third vein, beyond apical 

 sinuous mark, apparently representing, with light fleck on 

 distal border of second sabmarginal cell, last vestiges of an 

 outer ramus of apical sinuous mark, which has disappeared; 

 discal cell with two rather widely separated transverse light 

 marks, and a larger or smaller light spot close to its distal 

 extremity ; stigma well marked, dark brown or bistre, its 

 proximal extremity cream-buff, and a sharply defined small 

 light semicircular mark (upward extension from distal rosette) 

 immediately beyond its distal extremity, next costa. Halteres 

 cream-bufi' or cream-coloured, knob seal- brown at base above 

 and below. Legs : front and hind tibiae slightly incrassate, 

 pale bands on hind tibiae rather indistinct; front tarsi dark 

 brown, first three joints sometimes paler at base, first four 

 joints of middle and hind tarsi buff with dark brown tips, 

 last joint of middle and hind tarsi dark brown. 



