ADAMS : DIPTERA AFRICANA. 153 



terior tibiae, except their tip, hind tibiae, except anterior sur- 

 face, and upper surface of four anterior metatarsi reddish, pile 

 white, bristles black, a few on under side of femora and on 

 tarsi whitish. Wings hyaline, veins fuscous, first submarginal 

 cell with a narrow gray streak. Length, 27 mm. 

 One specimen ; October. 



Promachus apicalis, n. sp. 



Male and female : Head yellowish pollinose ; bristles of sides 

 of front black, the strongest ones of the mystax light yellow, 

 remainder and those under antennae black ; palpi and proboscis 

 shining black ; sparsely light-colored pilose ; pile of occiput 

 white, a row of black bristles along posterior orbits ; cheeks 

 shining black ; antennjie black, first two joints with short black 

 hairs. Thorax grayish yellow pollinose, prothorax with a 

 transverse row of black bristles ; mesonotum with a median 

 brownish line, which is bordered laterally by two broader, vel- 

 vety-black vittae, a large sublateral, velvety-black spot, divided 

 by the suture, and a smaller, similarly colored one just laterad 

 to dorsocentrals on posterior part; two presutural, two supra- 

 alar, two postalar, and four dorsocentral bristles, pile very 

 short, black, in the female a few white ones posteriorly ; scutel- 

 lum with an apical pair of black bristles, pile yellowish ; pleurae 

 with sparse, very minute, yellowish pile, mesopleurae without 

 bristles above ; hal teres yellowish. Abdomen black, uniformly 

 grayish yellow pollinose, pile short, yellowish, each segment 

 with a pair of yellowish bristles on each side. Legs black, 

 short pile yellowish, with about an equal number of black and 

 whitish bristles. Wings with a light fuscous tinge, last sub- 

 marginal cell, on an average, about as wide as the first, apex of 

 of wings gray opaque. Length of male, 16 mm. ; of female, 

 18 mm. 



Three specimens ; January. 



Promachus solus, n. sp. 



Female: Face largely yellow pollinose, silvery on sides, 

 bristles of mystax yellowish white and black, long pile below 

 antennae white ; front yellowish pollinose, bristly hairs black ; 

 antennae black, first two joints with short yellowish pile ; palpi 

 and proboscis black, bristles of former white and black, pile of 

 latter white ; cheeks largely shining black ; occiput gray polli- 



