ADAMS : DIPTERA AFRICANA. 167 



ORTALID^. 

 Pyrgota. 



(Wiedemann, Auss. Zwelfl., II, 581 ; 1830.) 



Pyrgota abjecta, n. sp. 



Female : Head grayish yellow ; front broad as one eye, sides 

 parallel, on anterior half with two submedian indistinctly de- 

 fined, brownish vittse which are almost contiguous anteriorly ; 

 as usual the ocelli are absent, but the ocellar dot is blackish, 

 small ocellar bristles and a pair of small postocellar bristles 

 present ; on each side and opposite the ocellar bristles is a pair 

 of small approximated fronto-orbitals, the single pair of vertical 

 bristles strong. Face yellow, just below the antennae the black 

 median carina is sharp, and below it extends into a broad 

 triangular flat space, this latter is yellowish except on sides. 

 Antennie reddish yellow, third joint tinged with brown apically. 

 Palpi reddish yellow, proboscis sordid. Occiput yellow, a 

 rather broad blackish vitta from upper angle of each eye to the 

 neck, internally this is bordered by a narrow yellow line, which 

 in turn is bordered internally by two subfused, blackish spots. 

 Thorax yellowish ; mesonotum with the reddish-brown vittse, 

 the middle one narrowing posteriorly and passing onto the 

 scutellum, the lateral ones abbreviated anteriorly and interrupted 

 at the suture, there is a small, similarly colored, spot near base 

 of wing and reaching in front of the suture ; one humeral, two 

 notopleural, one presutural, two supraalar, one intraalar, and 

 two dorsocentral bristles on each side ; scutellum with two 

 pairs of bristles, the apical ones discussate ; pleurae largely 

 blackish brown, with two mesopleural, one pteropleural, and 

 two sternopleural bristles ; halteres yellow. Abdomen sub- 

 opaque brown, with black bristly pile ; sixth segment shining, 

 reddish yellow apically, ovipositor yellow. Legs yellowish, 

 with the femora largely brown. AVings fuscous, marked as fol- 

 lows : A hyaline spot wholly fills out the anal and second basal 

 cells, then narrows and passes across the center of the first basal 

 cell and enters base of marginal cell ; the costal cell has two 

 small hyaline dots ; at tip of auxiliary vein a hyaline spot 

 starts, broadens in crossing marginal and submarginal cells, 

 narrows across the first basal cell, broadens again in the discal 

 cell, but is here indented distally, and passes some distance 

 beyond the fifth vein ; two dots just beyond tip of first vein, 



