282 AMERICAN DIPTERA. 



spots or stripes. Pleura covered with long wbite hair. Scutellum of same color 

 as thorax, covered with short, black pile, and having a marginal row of black 

 bristles. Halteres reddish-brown, fan-like row of hair in front white. Abdomen 

 shining blue-black, with cobalt reflections, fifth and sixth segments reddish-yel- 

 low, which color can be seen obscurely on the second, third and fourth segments, 

 dorsum covered with short, dark colored pile, on the last three segments with 

 lighter colored pile, lateral margins of all segments with long white pile, which on 

 the first three segments becomes longer and covers a wider space. Lateral mar- 

 gins of the first segment with two bristles, second segment with three, third and 

 fourth segments with one bristle. Legs shining black, covered with long white 

 hair, bristles of tibiae, tarsi and two on the apex of the hind and middle femora 

 black, hind femora slightly thickened distally, hind tibise slightly curved. 

 Wings hyaline, veins black, brownish along the veins. 



One male from Glen, Sioux Co., Nebraska, August 14, 1906 (P. 



R. Jones). 



23. LiAlflPRIA Macquart. 

 liUUipria rubiveiitris Macquart. 



Two males and two females from Cams, and a male from Lincoln, 

 Nebraska, which I am inclined to believe belong hei-e. All the 

 specimens have black autennse, yellow mystax- (with a few black 

 hairs in the female), and dense golden pubescence on the thorax. 

 Legs black, front tibia) and tarsi yellow, hind tibiae brownish red. 

 In the male specimens from Cams the abdomen is entirely yellowy 

 while in the female from Cams the three segments are yellow, with 

 the remaining segments brownish-black, showing a yellowish tint. 

 The male specimen from Lincoln has the entire abdomen reddish- 

 yellow. Formerly recorded from Pennsylvania, Georgia and Texas. 



24. DASYL.L.IS Loew. 



Da»>ylliis astui* Osten Sacken. 



Specimens from Lincoln, West Point and Saltillo, Nebraska. The 

 specimens show considerable variation in the extent of the yellow 

 pile on the tibiae. 



Dai^yllis feriialdi Back. 



Numerous specimens from Sioux Co., Nebraska. This species is 

 our most common species in the northern part of the State during 

 the summer months. It presents a striking resemblance to Bomhus 

 hiuitii Greene, which is also an inhabitant of that part of the State. 

 I also have specimens from Colorado and Custer, South Dakota. 

 Formerly recorded from Colorado. 

 Dasyllis sacrator Walker. 



Two males, one from Cams, Nebraska, July 6, 1902, and the 

 other from Lincoln, Nebraska, May 30, 1905. Tlie Lincoln speci- 



