90 Journal New York Entomological Society. [Voi. xv. 



to determine. It has the black median facial stripe which is character- 

 istic of P, tibialis^ but, like P. bicolor, it also has a narrow yellow 

 border on the scutellum. The abdomen is devoid of any of the red 

 markings which appear on some varieties of P. tibialis, but it has arcu- 

 ate, pilose spots like those found on some varieties of P. bicolor. 



2. Paragus tibialis Fallen, var. haemorrhous Meigen. 



Two males from Lincoln, Nebraska. 



Var.? Two males from Lincoln, Nebraska, with the fourth, fifth 

 and sixth segments red. Var.? Four males from Lincoln, Cams, and 

 Cedar Bluffs, Nebraska, with the fourth segment and the tip of the 

 abdomen red. 



6. CHILOSIA Meigen. 



1. Chilosia comosa Loew. 



One female from Sioux County, Nebraska. The face is deeply 

 concave beneath the antennae and the tubercle is prominent. 



Formerly recorded from Colorado, English River, Winnipeg and 

 St. Hilaire, Quebec. 



2, Chilosia laevifrons, new species. 



$. Length 7.65 mm. Greenish black, shining. Eyes bare, front slightly 

 sulcate, black, -subfulgent, nearly as wide as in C. tarda, nearly bare, sparsely 

 punctured, and covered with very short, sparse, yellowish pile. Face black, shining, 

 bare except a few short whitish hairs on the orbits, gently concave to the tubercle 

 which is more prominent than the antennal projection, a deeper concavity from the 

 tubercle to the epistoma, lateral grooves long and deep. First antennal joint black, 

 second reddish brown, third red, subquadrate. Arista of third joint dark brown and 

 finely pubescent. Thorax and scutellum shining black with a decided greenish tinge, 

 and covered with long yellowish pile, the pile on the scutellum being longer than 

 that on the thorax. Scutellum finely punctate and without bristly hairs. Abdomen 

 shining, greenish metallic, covered with long bright yellowish pile, longer on the 

 lateral borders, first segment shining, second opaque, third opaque except an anterior 

 lateral spot on each side, remaining segments shining. Legs black, tip of femora, 

 base and tip of tibiae, metatarsi and first two joints of tarsi yellowish red. Wings 

 cinereous hyaline tinged with brown from stigma toward the base and center, veins 

 brown. Squama yellowish, yellow ciliate. Halteres brownish. 



Type. — Roca, Nebraska, May 12, 1906, on Fragaria virginiana 

 (P. R. Jones), i c^. 



This species is closely allied to C. tarda, but can be separated by 

 its nearly bare front, color of the antennse, shape of the third antennal 

 joint, and larger size. The first two joints of the tarsi of C. Icevifrons 

 are yellowish red while only the basal joints of C. tarda are red. 



