INSECUTOR INSCITL?; MENSTRUUS 75 



much narrower. Antennse not so elongate, more narrowed; 

 third joint in both sexes about twice as long as second joint. 

 Fronto-orbital bristles closely crowded against frontal bristles. 

 Face more receding, the lower border of head much shorter. 

 Front in both sexes nearly same width. Female without dis- 

 cal macrochsetse on intermediate abdominal segments, male with 

 small ones. Metatarsi of male swollen, especially hind ones, 

 agreeing in this character with Pseudatractoccra. Apical cell 

 closed, costal spine rather small. 



Differs from Pseudatractoccra -SiS follows: Epistoma shorter 

 and broader. Front less prominent. Parafacials narrower, 

 bare. Hind crossvein nearly in middle between small cross- 

 vein and bend of fourth vein. Also in frontal and discal- 

 macrochaeta characters given above. 



It may be noted here that Viviania georgicc B. B. is a Pseuda- 

 tractoccra. 



Ypophasmyia, new genus. 



Genotype, Ypophcemyia malacosomcc, new species. 



Differs from Miamimyia as follows : Male vertex wider than 

 one eye, front and face gradually widening therefrom. Fron- 

 talia a little narrower than parafrontals. Female front a little 

 broader than that of male. Parafacials and cheeks broad in 

 both sexes. Antennae enlarged in male, shorter in female. Fe- 

 male with two proclinate fronto-orbitals, male without such. 

 Three lateral scutellar bristles, a short suberect decussate api- 

 cal pair, and a discal pair. Median marginal macrochsetse of 

 first two abdominal segments weak or vestigial, the first seg- 

 ment practically without macrochsetse. Hind tibise rather 

 closely pectinate in both sexes, one longer bristle near middle. 

 Apical cell ending well before tip, open. Cubitus rounded- 

 subangular, without stump or wrinkle. Hind crossvein as far 

 from cubitus as its own length. First vein bare, third vein with 

 a few bristles at base only. 



Ypophaemyia malacosomae, new species. 



Length of body, 6 to 7 mm. ; of wing, 4.5 to 5.5 mm. Three 

 males and one female, Raleigh, North Carolina, reared by Mr. 



