1198] Dipterous Genus Drapetis Meigen 193 



conspicuously beyond the tip of the wing, anterior cross-vein located 

 at three-fifths the length of the discal cell, outer sections of the fourth 

 vein proportioned 1 : 6, of the fifth vein, 1 : 0.9, marginal cilia short. 



One specimen : Lafayette, Indiana, July 4, 1914. (Melander). 



Drapetis diversa, sp. nov. 



of. 1.3 mm. Black, shining, hairs very short and pale, first four 

 longitudinal veins curving forward, the first vein very short, hind femora 

 with two discoid processes above. Head higher than wide, orbits not 

 pollinose, front very narrow, its sides scarcely converging beneath, face 

 linear, black, cheeks very narrow; palpi and proboscis black; antennse 

 short, the second joint without a seta beneath, the third joint oval, but 

 slightly longer than wide, the bare arista nearly terminal, one and two- 

 thirds times as long as the antennae. Meso'notum with short close 

 pubescence, the marginal bristles small, two scutellar, about eight rows 

 of fourteen acrostichals ; pleurae not pollinose. Abdomen subshining, 

 laterally subopaque, hypopygium large, the lamellae with coarse brown 

 hairs. Legs devoid of bristles, the hairs pale, the hind femora greatly 

 swollen above and bearing a strong backward-projecting hook on the 

 proximal fourth of its extensor surface, distal to which near the middle is 

 a prominent disk-shaped protuberance. Halteres yellowish. Wings 

 short, broad, hyaline, veins pale brown, first vein ending before the 

 middle of the wing, the marginal cell broad, the second, third and 

 fourth sections of the costa proportioned 1.2 : 1 : 1, fourth vein ending 

 slightly before the tip of the wing, the first posterior cell much the 

 widest at its end, anterior cross-vein at two-thirds the length of the 

 second basal cell, outer sections of the fourth vein proportioned 1 : 5-, 

 of the fifth vein equal, costa bare, cilia of the hind margin short. 



One specimen : Alamogorda, New Mexico. 



Drapetis flavicornis, sp. nov. 



9 . Length 1 mm. Shining black, the appendages yellow. Head 

 globular, black, subshining, sides of the front slightly diverging above, 

 face linear, shining black, the narrow cheeks, palpi^ palpal seta, pro- 

 boscis, antennae and arista yellow; antennae three-jointed, the last 

 joint oval, slightly longer than wide, the arista twice the length of the 

 antennae and microscopically hairy; ocellar and vertical bristles black. 

 Thorax broader than long, its bristles blackish, its hairs moderately 

 sparse, short and brown; pleura polished; abdomen opaque blackish, 

 the middle three segments with two transverse rows of converging 

 setulae; ovipositor yellowish. Legs without bristles, the hind tibia with 

 a broad blunt sericeous terminal lappet. Halteres yellow; calypteres 

 brown. Wings narrow, clear hyaline, veins brownish along the middle 

 of the wing, at the base and apex pale yellowish, the second, third and 

 fourth costal sections proportioned 1 : 1.5: 0.8, third vein straight, 

 nearly parallel with the fourth, posterior cross-vein somewhat oblique,' 

 located before the end of the first vein, sections of the fourth vein pro- 



