276 AMERICAN DIPTERA. 



the oociiuit having a reddish tint. Thorax black, shining, covered with short 

 dense yellowish-red pile, longer on the posterior margin, a few bristles on the 

 lateral margins black. Scutellum of similar color and covered with pile of simi- 

 lar color to that of the thorax, with a row of thin, light colored bristles on the 

 posterior margin. Pleura black, covered with dense yellowish-white pollen and 

 sparse light colored pile, a shining spot on the mesoplenra extending obliquely 

 downward toward the front coxse. Halteres and a fan-like row of bristles in 

 front yellowish-white. Abdomen shining black, with a bluish tint, and covered 

 with fine, dense yellow pile not easily seen unless viewed from piofile. Pile of 

 first two segments and lateral margins of the rest longer. Posterior lateral mar- 

 gin of all the segments golden ])ollinose, less so on the posterior segments. Second 

 segment of the abdomen short, about as long as the first. Tip of abdomen with 

 a circle of long bristle-like hairs. Legs blwck, coxse grayish-white poUinose. 

 Coxae and femora with whitish pile, that of hind femora with a reddish tinge, 

 tibife and tarsi with shorter pile of a more reddish tinge, bristles of tibise and 

 tarsi a trifle lighter than those of the femora, a few on the tarsi black. Wings 

 uniformly blackish. 



Type.— One female from Meadow, Nebraska, July, 1906 (P. R. 

 Jones). 



The wing venation of this species is identical with that of the 

 figure of T. tagax Williston, given in Trans, Am. Ent. Soc, Vol. 

 XI, pi. 1, fig. vi. The gibbosity of the face on the lower part is 

 similar to that of fig. 6a of the head, but the upper part and an- 

 tennal prominence are barely visible when viewed from profile. The 

 third joint of the antennse is not as broad as that of T. tagax. I 

 will place this species in this genus, although I think the genus 

 Triclis should not stand unless separated from Laphystia by some 

 other character than the closed posterior cell, which I found so 

 variable in the preceding species. 



7. ECHTHODOPA Loew. 

 Echtlio<lo|»a piibera Loew. 



Specimens from Lincoln, West Point, Harlan and Sioux Coun- 

 ties, Nebraska. 



8. DIOCTRIA Meigeu. 



Diocti*ia nifipes u. sp. 



9,%. Length 7-9 mm. Black, shining, wings blackish, yellowish at the 

 base, nearly bare species. Front and face black, covered with fine reddish-yel- 

 ' low pile, face flat, gently receding to the oral margin ; when viewed from profile 

 a slight convexity can be seen at the base of antennae and oral margin ; when 

 viewed from the front, broad, nearly straight, but a trifle concave. Mystax 

 sparse, light colored, confined to the oral margin, beard sparse whitish. Occiput 

 and orbital margin covered with dense silvery pollen. Antennae black, first 

 joint nearly twice as long as the second ; third (without style) nearly one and 

 one-half times as long as the first two together, style about as long as the second 



