166 A Monograph of Culieidae. 



the inner side are two slight notches. In Stegomyia they are 

 the same size apically, tapering to an abrupt acute apex. 



This genus comes close to Stegomyia, but differs in (i) the 

 marked flat scales on the mesonotum, (ii) the wing scales, and 

 (iii) in the peculiar } palpi, and also in (iv) the swollen second 

 antennal segment. The only example yet found occurs in the 

 Sudan. 



Quasistegomyia unilineata. Theobald (1906). 

 Sec. Kept. Gord. Coll., Well. Labs., p. 70 (1906). 



Head black with a median white line ; palpi black with 

 white apex ; proboscis black. Thorax deep brownish-black with 

 a median white line, divided by a very narrow dark line, which 

 extends about half the length of the mesothorax, two small 

 white spots where it ends and a white patch in front of the roots 

 of the wings, also a few white scales before the white-scaled 

 scutellum. Abdomen black with traces of narrow white basal 

 bands and large white basal lateral spots. Legs black, base of 

 femora white and with some of the segments with basal white 

 bands. Wings brown scaled. 



9 . Head black, clothed with flat black scales with a broad 

 median area of flat white ones about three and four scales wide, 

 a few snow-white small flat scales projecting between the eyes, 

 bristles black. 



Clypeus black, with a distinct ridge which ends in a lateral 

 prominence on each side, nude ; proboscis deep black ; palpi 

 black-scaled with snow-white apical scales, swollen apically ; 

 antennae black, basal segment black with a patch of snow-white 

 scales on the inside. 



Thorax black, clothed with deep bronzy-brown narrow-curved 

 scales, ornamented with a median line of narrow-curved white 

 scales almost hair-like, with a very narrow bare line in the 

 middle showing as a narrow dark line ; this extends about half 

 across the mesonotum J just behind where it ends are two small 

 white-scaled spots, one on each side ; over and in front of the 

 roots of the wings is a patch of broader snowy-white scales, 

 behind, bordering the sides and overlapping the bare space in 

 front of the scutellum, numerous irregularly placed broadish 

 narrow-curved scales, and on each side of them near the 

 scutellum a large patch of flat black scales ; the whole meso- 

 notum very bristly, the chaetae large and black ; scutellum 



