128 BULLETIN 31, UNITED STATES NATIONAL MUSEUM. 



saturately tinged, third joiut ovate, the arista coucolorous. Venter 

 cinereous, with white pollen and briefly white pilose. Femora black, 

 the extreme tip reddish luteous ; tibiae ferruginous red, near the base 

 becoming more luteous, anterior ones blackish near the tip, hind ones 

 fuscous in the middle ; front tarsi black, near the base red, hind ones 

 red, last two joints black. Wings very dilutely lutescent, but near the 

 tip cinereous and marked with a median fascia more cbsoletely cineres- 

 cent. 



Translation from the original, compared with the type specimens 

 (three) in the Museum of Comparative Zoology. In the single male 

 specimen the appressed pile of the dorsum has a more yellowish cast. 



Myiolepta bella (Plate V, fig. 2). 



Myiolepta bella Williston, Trans. Amer. Phil. Soc, xx, 308. 



Habitat — Washington Territory, Oregon ! 



9 . Length, 7 to 8°'™. Deep black, shining. Front with very short 

 black pile above, not at all pollinose; face bare, not pollinose, much 

 produced, in profile deeply concave, below the middle briefly and gently 

 convex. First two joints of the autennoe blackish, third joint orbicu- 

 lar, reddish yellow; arista brownish luteous. Thorax faintly whitish 

 pollinose on the anterior margin ; clothed with very short black pile, 

 longer on the border of the scutellum. Abdomen broadly oval, very 

 shining, clothed with short white pile. Halteres light yellow; tegulse 

 white. Legs black, with black pile. Wings lightly tinged with brown 

 on outer part, hyaline on basal portion; stigma light brown. 



Three specimens, Washington T»?rritory, Mount Hood, Oregon. 



Myiolepta varipes (Plate V, figs. 1, la, Ih). 



Myiolepta raripes Loew, Ceutur., ix, 79 ; Williston, Traus. Amer. Phil. Soc, xz, 



308. 

 Myolepta lunulaia Bigot, Annales Soc. Ent. Fr., 1884. 537. 



Habitat. — Virginia, Washington Territory, California! 

 5,9. Length, 7 to 8™°\ Black, shining. Front in female narrowly 

 pollinose along the orbit on each side ; in the male the frontal triangle 

 pollinose on its margins. Antennae brownish reddish, in some speci- 

 mens more distinctly brown throughout ; basal joints more blackish, 

 the arista like the third joint. Face in the female in profile deeply con- 

 cave from the base of the antennae to a little above the oral margin ; 

 shining, with a broad, white pollinose cross-band below the antennae; 

 the sides, and a stripe running from the eye toward the oral margin, 

 pollinose; face in the male deeply concave to a little below the middle, 

 where there is a small but prominent mammillate tubercle, everywhere 

 densely white pollinose, except on the tubercle and immediately below 

 it and on the cheeks, where it is shining; the lower part of the face in both 

 sexes not so much produced as in the allied species. Dorsum of thorax 

 with a bronze reflection, clothed with short, appressed, yellowish white 

 pile; on the front margin, interrupted in the middle, white pollinose. 

 Scutellum shining black, with yellowish pile. Abdomen black ; the first 



