New or Little-known Diptera. 



liV S. \V. WILLI STON. 



Platyura pulchra. n. sp. 



Male. Antennae about as long as the thorax; black, on the under 

 side, toward the base, red; first two joints yellow. Front and face 

 black, the latter with whitish pubescence; palpi and proboscis yellow; 

 occiput black; epistouia moderately i)roiccting. Mesonotum shining 

 reddish yellow, with light-yellow hair; three dark brown stripes, 

 separated by slender lines, the lateral ones abbreviated in front. 

 Scutellum black. Pleurae black, with reddish spots; the projecting 

 metapleurae yellowish. First two segments of the abdomen black; 

 third segment reddish yellow, with a black hind border; fourth 

 segment and the anterior part of the fifth reddish yellow; remaining 

 segments black; the hypopygium reddish, with whitish pubescence; 

 abdomen shining. Coxae and legs (the hind pair is wanting) light 

 yellow; tibiae infuscated- by the minute black hair; tarsi blackish; 

 middle and front tibiae with short spinules. Wings hyaline, the tip 

 and posterior border infuscated; a narrow brown cloud covers the 

 tip of the first vein and reaches into the base of the first posterior cell; 

 subcostal cross-vein only a little distance beyond the humeral cross- 

 vein; tip of auxiliary vein beyond the origin of the third vein; the 

 anterior branch of the third \ein terminates in the first vein near its 

 tip; prefurca of fourth vein \ery short; seventh vein complete. 



Length, 8-9 mm. 



One specimen, Washington, University of Kansas. 



Platyura notatailis, n. sp. 



Male. Antennae black, not compressed, a half longer than the 

 thorax; first two joints yellow. Face and lower part of the front 

 reddish yellow; epistoma i)rojecting, beak-like; palpi and proboscis 

 yellowish; front, except the lowermost portion, black. Thorax yellow, 

 the mesonotum somewhat reddish; a blackish spot on the proximal 

 part of the hind coxae and the adjacent portion (if the pleurae; a fringe 

 of black hairs just above the root of the wings. Abdomen reddish 

 yellow, with short, black hair. Legs yellow, the tibiae and tarsi 

 infuscated or blackisli; front tibiae bare, the middle and hind pairs 

 with short spinules. Wings yellowish, the tip infuscated; a feebly 

 marked brownish band before the tip; the auxiliary vein terminates at 



(.59) KAN. UNIV. QUAH. VOL. II. NO. 2. OCT., 1893. 



