On tin I><n>/l>i/liiil l\nnin of Smitli A/riru I l')i />!, r ). I'll 



base there is a narrow reddish-yellow stripe ; venter reddish, whitish- 

 haired ; male genitalia of great size, bilobate, black above, red below, 

 with yellow hairs. Legs entirely pale yellow, white-scaled : feiuora 

 and tarsi more or less darkened at end ; hairs of coxae and of the 

 under side of femora white ; the thin spines of the hind femora and 

 the short spicules of the tibiae are black : claws black, pulvilli whitish. 

 Wings very long, with pedunculate base : the costa is not ciliated at 

 base and the alula is very rudimentary ; they are entirely and equally 

 iiif uscated, the axillarv lobe oiilv being hyaline with a dark end. The 



^ * fj * 



hyaline stripes are placed on the end of the first and of the second 

 subniarginal cells, this last being in contact with the whole wing 

 border between the ends of the two branches of the cubital fork, in 

 the middle of the 2nd, 3rd and 4th posterior cells, and one broader 

 than the others, of ovate shape, in the last half of the discoidal cell : 

 in addition there is the usual whitish spot 011 the upper exterior angle 

 of the second basal cell. The veins are black ; the second longitudinal 

 is suddenly and deeply looped before the end, and its origin is 

 equidistant from the base of the third vein and the discal cross-vein ; 

 upper branch of cubital fork gently rounded at base and destitute of 

 stump. First posterior cell long, not, or little narrowed at end : discal 

 cross-vein placed on the first third of the discoidal cell ; this last cell 

 is long, very dilated in its last half, and therefore much constricted 

 before the middle ; third posterior cell very elongate and very narrowed 

 in its last half ; anal cell narrowed at end ; ambient vein complete. 



PETROROSSIA FULVIPES, Loew (1860). 

 Dipteren-Fauua Sud-Afrikas, p. 210, pi. ii, tig. 14. 



A well-known Ethiopian species, easily distinguished by its elegant 

 coloration. M'Fougosi, Zululaud ; Natal, Stella-Bush ; but the 

 species is common and widely distributed over the entire region ; it 

 is hardly distinct from the Oriental P. fulvula, "VViecl. 



SUBFAMILY ANTHRACINAE. 



ANTHEAX, Scopoli (1763). 



This name is used here, not in the usual sense of the authors (for 

 these species, see Villa and Thyridanthrax), for the species of Argi/r/i- 

 mot'ba which have a broad third auteuual joint, an extended black 

 pattern on the wings and a silvery abdominal apex in the male. The 

 rather numerous species may be tabulated as follows : 



