AKT. 19 



AMERICAN MUSrOTD FLIE.S ALDRICH 



26 



palpus for an American species {hir'suta Townsend) witli neither 

 palpi nor ocellars, and Spmupalpus for one {miscelli Coquillett) 

 which like macrocera has ocellars but no palpi. These distinctions 

 are, I think, too slight to base genera upon. 



Male (fig. 1). — Front wide, at vertex 0.41 of head width ; two pairs 

 of large verticals; one pair of ocellars as large as the averge of the 

 frontals, the latter extending somewhat below the base of the anten- 

 nae with a supplementary outer row of four along the broadest part 

 of the parafrontal, all of these directed toward the middle except the 

 upper two or three which are reclinate. Parafrontals broad, sub- 

 shining except next to the eye, considerably wider than the middle 

 stripe. Entire face, including cheeks, pale in ground color with 

 silvery pollen, which is distinctly tinged with yellow on the cheeks 

 and very faintly so on the parafacials; the middle of the face some- 

 what bulging, the ridges very flat, bare; edge of mouth moderately 

 protuberant. Parafacial Avith 

 one stout black bristle on lower 

 part and a few pale hairs above 

 and below it. Antennae red, 

 third joint dark on apical half, 

 very large and triangular as 

 shown in figure; the arista has 

 a long penultimate joint, the 

 apical one pubescent, flattened 

 on the basal third or more. 

 Palpi absent. Proboscis beyond 

 elbow about equal to height of 

 head. Beard Avhite, rather 

 Ijushy. Thorax gray, with four 

 distinct blackish stripes. Pre- 

 sutural acrostichals, three pairs, 

 and a small decussate apical. 



Fig. 1. — Head 



Wiedemann, 

 Drawn by C. 



OF CUPHOCERA MACHOCEKA 

 MALE (SUPPOSED TYPE). 



T. Greene 



Scutellum with two lateral pairs 

 Some pale hairs on pleurae not very 

 striking; one large pteropleural bristle nearly equal to the largest 

 scutellars. 



Abdomen black, subshining, with thin gray pollen which is quite 

 changeable in different angles of view. The fourth segment yellow- 

 on apical two-fifths, this color extending forward on the median 

 line to three-fifths. First segment without median marginals; sec- 

 ond with one pair rather close together; third with one pair and three 

 at the side : fourth with several bristles on apical half. 



Legs black, under side of femora reddish on apical half; middle 

 and hind tibia with reddish tinge except at base; front pulvilli not 

 nuicli enlarged; middle tibia with several stout bristles on outer 

 front side. Hind tibia with a few not so large on outer hind side and 

 others on inner hind side. 



