Species of West-African Culicidae. 271 



terminal segment. Legs blue-black, unbanded, bristly; 

 femora pale beneath ; tibiae with small golden spots on inner 

 surface. Ungues on fore and mid legs equal and uniserrate, 

 on hind legs equal and simple. Wings covered with purple- 

 brown scales, with blue iridescence on the costa ; first sub- 

 marginal cell longer and narrower than second posterior ; 

 stem slightly more than ^ length of cell; stem of second 

 posterior equal to length of cell ; posterior cross- vein double 

 its own length from the mid cross-vein. Halteres: stem 

 pale, knob dark. 



Length 4*5 mm. 



<$ . — Resembles the female. Palpi blue-black, same 

 length as proboscis. Thorax with somewhat darker scales. 

 Antenna: plume-hairs dense, very dark brown. Ungues 

 on fore and mid legs unequal and uniserrate, on hind legs 

 equal and simple. Wings : stem of first submarginal § 

 length of cell ; stem of second posterior equal to length of 

 cell; posterior cross-vein double its own length from the mid 

 cross- vein. 



Length 4"5 mm. 



Stegomyia pollinctor, sp. n. 



? . — Occiput : median area covered with black scales, with 

 a blue iridescence, the lateral areas with silvery-white scales ; 

 a deep border of silvery-white scales surrounds the eyes and 

 six dark hairs project forward. Palpi long, covered with 

 black scales with a violet iridescence. Clypeus black, nude. 

 Proboscis black. Antennas black, with narrow white bands 

 at whorls ; second joint densely scaled with broad black 

 scales. Eyes shining blue-black. Thorax black, covered 

 with coarse dusky black scales, with a greenish-blue irides- 

 cence. On each side of the thorax immediately in front of 

 the wing there is a nearly circular silvery-white patch, and 

 further forward a larger semicircular silvery-white patch 

 above each prothoracic lobe. A median band, with a contour 

 of overlapping circles, and formed of a double row of large 

 oval silvery-white flat scales, with a very narrow black line 

 'of separation between them, runs from the anterior edge to 

 the bare space before the scutellum, where the band separates 

 to enclose the bare space, and then extends on to the scu- 

 tellum in two distinct white bands. Scutellum : middle lobe 

 black, with white lateral bands ; lateral lobes with black 

 scales ; mid lobe with two dark bristles ; lateral lobes with 

 three dark bristles. Prothoracic lobes covered with silvery- 

 white scales. Pleura black, with silvery-white patches of 



