290 ERNEST E. AUSTEN — NEW AFRICAN 



joint below clothed with longer brownish hair ; first joint of antennae dark sepia- 

 coloured, greyish on inner side and on upper surface at base, moderately dull, 

 cylindrical and strongly swollen, with its upper distal angle somewhat prominent ; 

 second joint of antennae mummy-brown, the thumb-shaped processes mentioned 

 in diagnosis above clove-brown ; third joint of antennae clove-brown, its shape 

 (including that of the terminal annuli) agreeing with that of third joint of 

 antennae in foregoing species {see fig. 2a), except that in profile upper margin of 

 expanded portion is more convex in centre ; first joint of antennae clothed with 

 short black or dark brown hairs, with longer hairs of same colour above and 

 below ; thumb-like processes of second joint and upper and lower margins of 

 expanded portion of third joint also bearing short black hairs. Thorax : median 

 grey stripe on main portion of dorsum wanting (at least in case of type and para- 

 type), but crescentic grey marks on hind border of main portion of dorsum each 

 with a forwardly directed extension, runnng towards but not reaching ad median 

 grey fleck behind transverse suture ; humeral calli and areas immediately behind 

 them, and anterior extremities of admedian stripes light grey ; median stripe on 

 scutellum smoke-grey ; dorsum sparsely clothed with short, yellowish hairs ; 

 pleurae and pectus sepia-coloured, clothed with brownish hair (area above front 

 coxae drab, clothed with paler hair). Abdomen : hind borders of dorsal scutes 

 of second and following segments (sometimes excepting last two) smoke-grey, 

 last three dorsal scutes each with a pair of grey admedian spots : dorsum — 

 except grey hind borders of scutes, which are clothed with pale yellowish hair — 

 clothed with appressed dark brown hair ; dorsal scutes of first three segments 

 each with a large, smoke-grey patch at each lateral extremity, these patches in 

 case of second segment clothed with short, pale yellowish hairs ; venter dark 

 brown, clothed with short, appressed, similarly coloured hair. Wings : pale 

 markings cream-buff, coarser, sparser, and less complex than in foregoing species, 

 the rosettes, which are well developed, not consisting of more than two or 

 portions of two rings in each case ; portion of proximal rosette between discal 

 cell and second longitudinal vein largely coalesced, consisting of two relatively 

 coarse, curved, pale marks at base of first submarginal cell, two others at base of 

 first posterior cell, and two more at distal extremity of first basal cell ; this 

 portion of each wing consequently appears paler than in H. hastata ; pale mark 

 in marginal cell immediately beyond stigma small (at least in type and para-type), 

 sharply defined, and separated by a wide interval from further margin of distal 

 rosette ; apical sinuous mark well developed, not double ; distal marginal 

 angles of posterior cells occupied by pale blotches, which vary in size and 

 are sometimes very small and inconspicuous ; light markings in anal and 

 axillary cells resembling those in H. hastata {see fig. 2) ; stigma dark 

 brown, elongate, with beneath it a large, quadrate, dark brown blotch, which is 

 darker than remainder of wing ; veins dark brown, infuscated portions as in 

 H. hastata, but more pronounced. Squamae light drab or isabella-coloured. 

 Halter es : knobs clove-brown, stalks cream-buff. Legs : dark sepia-coloured, dark 

 brown, or clove-brown, front tibiae each with a single narrow pale band near 

 base, middle and hind tibiae each with two pale (buff-coloured) bands, first joints 

 of middle and hind tarsi except tips (distal fourth or distal third) also pale 



