1922] Curran: Ilammerschmidtia and Brachypoda 247 



deeper red than the third, dorsally, with a tuft of black hairs on each 

 joint; third joint Hght red, about as long as the first two together, 

 ovate; arista basal, bare. Vertex black, frontal portion with or without 

 silvery pollen, eyes narrowly separated. Dorsum of thorax brown, 

 M'ith black pile, covered with grayish pollen, anteriorly with two 

 approximate dorso-medial blackish stripes, laterally with a broad 

 interrupted stripe; the transverse suture deep, shining; humeri with a 

 reddish spot; pleurae reddish brow^n; a reddish brown stripe extending 

 from the scutellum to the base of the wing. Scutellum light reddish 

 brown, beset with blackish and reddish pile, shining, with a very narrow 

 median Hght stripe; abdomen slightly longer than the thorax, but little 

 longer than wide, light reddish brown and entirely shining, with reddish 

 pile; the posterior portions of segments one, two and three with a 

 posterior shining, brownish, transverse band, either entire or interrupted 

 in the middle. Legs of the same color as the abdomen, principally 

 with light colored pile, on the under side of the hind femora and the 

 apex of the anterior four femora with stout black pile; tarsi darker 

 brown, light at apex; hind basitarsi slightly thickened at base and 

 thence gradually tapering to apex. Wings hyaline with a reddish 

 tinge, anterior cross-vein before the middle of the discal cell and almost 

 rectangular. (Colorado) . (Jones) . 



"5. rufiabdominalis differs from B. cynops in that the scutellum 

 and abdomen are entirely shining, etc. ' Differs from B. bicolor of 

 Europe in that the occiput of the latter is pale gray and with gray 

 pile, the face is without pubescence, the eyes touch for about one-third 

 the distance from the ocelli to the antennas; the scutellum has eight 

 long marginal hairs and is covered with short black pile, while in rufi- 

 abdominalis the occiput is black, whitish poUinose and has black and 

 whitish pile; the face has fine whitish pubescence on it; the eyes are 

 distinctly separated, the nearest point of contingency being immediately 

 below the ocelli ; the scutellum has black pile dorsally, and the remainder 

 is covered with reddish pile and lacks the eight black marginal 

 bristles." (Adapted from Jones). For further remarks see B. media 

 Will. 



Brachyopa media Will. 



vSmall, dorsum of thorax blackish or slaty, abdomen reddish yellow, 

 the hind borders of the segments narrowly brownish; front in "female 

 brownish. 



Length, (i to 7 mm. Male. Face and front reddish yellow, the 

 cheeks and most of the frontal triangle shining, elsew^here w-hitish 

 pollinose Antennas reddish yellow, arista black, its base reddish. 

 Vertical triangle long, narrow, the eyes touching for only a short 

 distance; occiput brownish above. Dorsum of thorax blackish or 

 brownish black, the sides usually reddish, covered with whitish yellow- 

 pollen, leaving a median double stripe, and an interrupted stripe on 

 each side, brownish; humeri yellowish; pleuras reddish brown above, 

 brownish below, thinly whitish pollinose. vScutellum reddish yellow. 

 Pile of thorax and scutellum yellowish, on the pleurae whitish. Abdomen 



