NEW MUSCOID FUES FROM THE ANDEAN MONT AN YA 135 



General color of thorax, pleurae, and parafrontals golden-olive, that of 

 scuteiium and tergum of abdomen gold-gray to olive-golden. Face amd 

 cheeks silvery to tawny-silvery, showing faintly golden in greased speci- 

 mens ; pile of cheeks and parafacicJs usually yellowish-gray but sometimes 

 shading to dark on latter, that of parafrontals black, and that of occiput 

 brassy-gray. First two joints of eintennae wholly deep reddish-yellow ; 

 the legs normally concolorous with same, but femora often shaded with 

 blackish or wholly black except tips, the tarsi usually more yellowish. 

 Third antennal joint and arista wholly black. Frontalia brownish-yellow 

 to brownish-olive and paJe brown. The only exception to three post- 

 sutureJ bristles is in one of the three females from Huascaray, which has 

 four. TTiree postacrostichal bristles, the front one usually weak ; but one 

 male from Uruhuasi has only two, and two other maJes have only one. 

 Discal bristles of scuteiium usually in about two irregular transverse rows. 

 The median marginal and discal macrochaetae of second abdominal seg- 

 ment form one segregated median group, and the discal of third segment 

 another segregated median group, each group conteuning usually numerous 

 bristles. Abdomen of made sometimes with more or less of reddish tinge. 

 Edges of abdomen irregularly darker, the broad lateral hind comers of 

 first three segments and apical hailf or less of anal being deep reddish- 

 brown to blackish, sometimes only reddish and again quite black and 

 subshining. Venter of female shining black with the pollen of tergum 

 showing faintly on third segment and plainly on and segment ; that of 

 male more or less broadly reddish on sides anteriorly, sometimes on all of 

 sides but anal segment When greased the abdomen of female becomes 

 brown or blackish above, and the scuteiium brownish-yellow. Wings 

 wholly moderately infuscate, including front scale of tegulae which is but 

 a lobe of the wing. Hind scale of tegulae nearly white, border more or 

 less yellowish. 



Type, female, Huascaray, September 22. The single female from 

 Uruhuasi is TD3946, and contained black maggots. 



Epalpus nigricornis, new species. 



Length of body, 1 3.5 mm. ; of wing, 12 mm. One male, with pre- 

 ceding specimens from Uruhuasi, February 3, 1910, on flowers of Bac- 

 charts sp. 



Differs from E. discalis only as follows: Face and cheeks silvery- 

 white. Antennae wholly jet-black, second joint being polished black on 



