402 THE CANADIAN ENTOMOLOGIST 



one-half the length of the subcylindric basal enlargement, which 

 latter has a length about three-fourths greater than its diameter, 

 sub-basal and apical circumfili and subapically a moderately thick 

 whorl of long, moderately stout setae; terminal segment slightly 

 produced, narrowly conical, with a length about three times its 

 diameter. Palpi: first segment short, subquadrate, the second 

 with a length three times its width, moderately broad, the third 

 one-half longer than the second, more slender, and the fourth 

 one-half longer than the third, more slender, the distal three 

 sparsely haired. Eyes large, holoptic. Mesonotum pale yellowish 

 brown, the submedian lines bright yellowish. Scutellum dark 

 brown, postscutcUum \ellowish brown. Abdomen yellowish trans- 

 parent, the genitalia relatively very large and subdorsal. Wings 

 hyaline, subcosta uniting with the narrowly scaled costa near the 

 basal third, the third vein a little before the apex; the fifth vein, 

 indistinct distally, unites with the posterior margin near the distal 

 third, its brancii near the basal half; halteres whitish transparent. 

 Coxa\ femora, libia^ and the two basal tarsal segments mostly 

 whitish or whitish transparent, the three distal tarsal segments 

 dark brown; claws long, slender, moderately curved, unidentate, 

 the pulvilli about three-fourths the length of the claws. Genitalia: 

 basal clasp segment short, stout, curved, the sides nearly parallel, 

 the apex roundly emarginate, the distal angles produced, the in- 

 ternal being longer and broader; dorsal and ventral plates in- 

 distinct, the harpes produced as two long, slender, chitinized, 

 sorfiewhat sickle-shaped pieces having a length greater than the 

 entire hypopygium and extending posteriorly somewhat like a 

 pair of scissors. 



Female. — Length 1 mm. Antenna? extending to the base of 

 the abdomen, rather thickly haired, yellowish brown; probably 12 

 segments, the fifth subsessile, broadly subconical, with a length 

 about one-half greater than its diameter; low circumfili at the basal 

 third and apically, a sparse basal and a scattering subapical whorl 

 of long seta?; terminal segment reduced, broadly conical and taper- 

 ing to a broadly rounded apex. Palpi; first segment with a length 

 three times its diameter, the second a little longer, broader, the 

 third twice the length of the second, more slender and the fourth 

 one-fourth longer than the third, all sparsely haired. Eyes holoptic, 



