196 Annals Entomological Society oj America [Vol. XI, 



brown and thin, the first four veins curving forward, first vein ending 

 near the middle of the wing, the second, third and fourth sections of the 

 costa proportioned 1 : 1.2 : 1, fourth vein ending beyond the tip of 

 the wing, its outer two sections proportioned 1 : 0, anterior cross-vein 

 at two-thirds the length of the second basal cell, costa and hind margin 

 uniformly short-ciliate. 



Various places in Washington, Idaho, New Mexico and 

 Texas. 



Drapetis pilosa, sp. nov. 



Length 1.25 mm. Black species with halteres and the major portion 

 of the legs black. Head almost spherical, front V-shaped, dusted, 

 ocelli large, face linear; mouthparts black, no long palpal hairs; occiput 

 lightl}^ dusted, orbits not differentiated, cheeks linear; antennas one- 

 third the head-height, ascending, the second joint not setigerous, the 

 third joint triangularly ovate, scarcely longer than deep, the arista 

 subterminal, three-fourths longer than the antenna. Mesonotum shin- 

 ing, the hairs relatively long, conspicuous and obliquely erect, no humeral, 

 one dorsocentral, one intraalar bristle, only the apical pair of scutellar 

 bristles long; pleurae polished. Abdomen shining, disc bare, lateral 

 hairs short, stiff and black, last segment without long fringe, fourth 

 segment much longer than any of the others; hypopygium small, 

 transversely depressed, the parts on the right side slightly exposed. 

 Legs entirely bristleless, no tibial lappet or spurs, front tibise and 'all 

 the tarsi yellowish-brown. Hairs of calypteres black. Wings hyaline, 

 veins very thin, brownish, the first vein ending at the middle of the 

 wing, sections of the costa proportioned 1 : 0.4 : 0.7 : 0.3, of fourth 

 vein, 0.3 : 0.2 : 10, third vein sinuate and apically parallel with the 

 fourth, sections of fifth vein subequal. 



9 , thoracic pubescence slightly shorter than in cf . '- 



Type: Lafayette, Indiana,. July 4, 1914 (Melander). Four 

 paratypes, Chicago, Illinois, June 28, 1914, on shrubbery in 

 vacant lots near the lake shore (Melander). 



Drapetis setulosa, sp. nov. 

 Length 1.3 mm. Shining black, hairs of the mesonotum numerous 

 and black, legs yellowish. Occipital and ocellar bristles stout, lower part 

 of the front one-third as wide as the second antennal joint; palpi black- 

 ish, but covered with white hairs; eyes together higher than broad, 

 obliterating the cheeks; antennee short, ascending, no seta beneath, the 

 third joint short-ovate, with nearly bare subterminal arista measuring 

 three times the antennal length. Mesonotum shining, densely short- 

 hairy; no humeral, five supraalar bunched together, two small pre- 

 scutellar, two scutellar bristles. Abdomen sub-shining black, hypo- 

 pygium small, rounded, apically with numerous short yellowish hairs. 

 Legs short, yellowish to brown, the front ones lighter, the hind ones 

 darker, no bristles or terminal spur. Halteres blackish. Wings hyaline, 

 third vein lightly sinuose, parallel with the fourth toward its end, the 



