196 KANSAS UNIVERSITY SCIENCE BULLETIN. 



except extreme base, front tarsi and last two joints of hind tarsi 

 black. Wings grayish hyaline, veins brownish, second section 

 of costa a little shorter than the third, third and fourth veins 

 slightly divergent, cross-veins a little more approximated than 

 in the other species. Length, 3 mm. 

 Numerous specimens ; May. 



Pachylophus frontalis. 



Pachylophus frontalis Loew, Berl. Ent. z, 121. 

 Numerous specimens ; October. 



Haplegis. 



( Loew, Schles. Zeitschr. f . Ent. ( 22) ; 1866. 



Haplegis scutellaris, n. sp. 



Front broader than one eye, moderately projecting anteriorlj^, 

 yellow, frontal triangle shining black, large, contiguous with 

 the eyes above, suddenly narrowing to an acute angle anteriorly, 

 which reaches nearly to the antenme ; face moderately receding, 

 light yellowish, whitish poUinose ; cheeks narrow, yellowish, 

 white pollinose ; occiput black, yellow on lower angles ; antennae 

 largely yellow, upper anterior angle of third joint black, third 

 joint quadrangular, nearly twice as long as broad, arista basal, 

 bare, brownish black ; proboscis brownish black, palpi yellow. 

 Thorax shining black, a spot behind humeri, one above front 

 coxae, a narrow line above middle coxae, and scutellum yellow; 

 one humeral and two posthumeral bristles present ; knobs of 

 halteres yellow. Abdomen shining black. Legs black, coxae, 

 base and tip of all femora and tibia\ and tarsi wholh^ yellow. 

 Wings hyaline, veins brown, second section of costa nearly 

 twice as long as the third, small cross- vein nearly under the tip 

 of first longitudinal vein, third and fourth veins straight, nearly 

 parallel. Length, 2 mm. 



One specimen ; October. 



Chlorops. 



( Meigen, Illig-. Mag., U. 278.) 



Chlorops trimaculata, n. sp. 



Front nearly twice as broad as one eye, moderately project- 

 ing before the eyes, yellow, with a few small black hairs, 

 frontal triangle reaching nearly to the antennae, yellow, with a 

 shining black spot on each angle, the two upper ones triangu- 



