ADAMS : DIPTERA AFRICANA. 185 



Drosophila apicifera, n. sp. 



Female : Head yellow ; front broad as one eye, opaque, three 

 fronto-orbitals on each side, a pair of verticals, and a pair of 

 smaller ones behind ocelli, ocellar bristles strong, ocellar dot 

 black ; antenme nearly as long as the face, third joint twice as 

 long as broad, brownish at apex; face somewhat excavated, 

 median carina barely perceptible ; mouth-parts yellow ; cheeks 

 narrow. Thorax yellow, pile black ; one humeral, two post- 

 humeral, two supraalar, one postalar, and a pair of small pre- 

 scutellar bristles ; scutellum with apex white, convex, with two 

 pairs of bristles ; halteres yellow ; pleurae with two sternopleural 

 bristles; legs yellow. Abdomen opaque blackish, pile black, 

 segments yellow on sides at base. Wings hyaline, costa ter- 

 minating at tip of third vein, third section of costa a little more 

 than one-half the length of the second section, and a fourth 

 longer than the penultimate section of the fourth vein. Length, 

 3.25 mm. 



» 



One specimen ; April. 



Drosophila mansura, n. sp. 



Female : Head and members yellow ; front about as wide as 

 one eye, three fronto-orbitals on each side, two verticals, a pair 

 of small bristles behind the ocelli, and a pair of rather strong 

 ocellar bristles present ; antenna? three-fourths as long as the 

 face, third joint twice as long as broad; face concave, median 

 carina indistinct ; palpi long, viewed from above are broad and 

 with parallel sides, from the side are shown to be thin ; cheeks 

 narrow ; occiput blackish centrally. Thorax brownish yellow ; 

 one humeral, two posthumeral, two supraalar, one postalar, 

 and a pair of small prescutellar bristles present ; scutellum with 

 two pairs of bristles ; halteres yellow ; two sternopleural bristles 

 present ; legs yellow. Abdomen yellow, posterior borders of 

 second, third, fourth and fifth segments shining black. Wings 

 hyaline, costa reaches tip of third vein, its third section about 

 one-half as long as its second, and little longer than the penul- 

 timate section of the fourth vein. Length, 2.5 mm. 



One specimen ; April. 



Drosophila palpalis, n. sp. 



Male : Head yellow ; front broad as one eye, three pairs of 

 fronto-orbitals, the lower pair directed forward, two i)airs of 



