June, 1907.J Jones : List of Nebraska Syrphid^e. 93 



15. ALLOGRAFT A Osten Sacken. 



1. Allograpta fracta Osten Sacken. 



One female from West Point, Nebraska (H. S. Smith). I have 

 compared this specimen with the one listed by Hunter in the Canadian 

 Entomologist, Vol. XXVIII, p. 95, and it is similar except that the 

 lateral borders of the facial stripe are not so sharply defined, and the 

 stripe extends farther toward the oral margin. This species was 

 formerly known in the United States from a single male taken by 

 Osten Sacken in California, and by a female taken in the same locality 

 eleven years later by Professor Bruner. There is some doubt as to the 

 validity of this species, but I will list it under this name. 



2. Allograpta obliqua Say. 



Specimens from Lincoln, West Point, and Glen, Sioux Co., 

 Nebraska. 



16. XANTHOGRAMMA Schiner. 

 I. Xanthogramma asnea, new species. 



9 . Length 10 mm. Face, cheeks and front yellow with a brownish red tinge, 

 vertex dark metallic green from which arises a stripe that extends a trifle over half 

 way to the base of the antennse. Antennae brown, reddish on first, second, and 

 lower part of third joints. Thorax shining bronze-green, with a broad indistinct 

 stripe on the lateral borders. Scutellum translucent yellow. Thorax with short light 

 colored pile, scutellum with longer black and yellow pile. Pleura with poorly de- 

 fined yellow spot. Abdomen opaque black, first segment shining yellow on the sides, 

 second segment with a yellow band narrowly interrupted, touching the lateral borders 

 in its whole extent, third segment with a wide band, obtusely emarginate behind and 

 touching the lateral borders in nearly its whole width, only very slightly attenuate, 

 fourth segment with a similar band more deeply emarginate behind and touching the 

 lateral borders as in the preceding segment, the black subfulgent, fifth segment with 

 a similar band and black subfulgent. Incisions of the segments and posterior mar- 

 gins of third, fourth and fifth segments yellow. Legs yellow, hind femora and 

 hind tibiae with a brownish ring, hind tarsi brownish. Wings hyaline, stigma light 

 yellowish. 



Type. — West Point, Nebraska, June, 1906 (P. R. Jones), i $. 



This species can be separated from X. flavipes by not having such 

 a clearly defined thoracic stripe, and spot on the pleura, and also by 

 not having any black on the scutellum. The yellow lateral stripes 

 touch the lateral borders of the segments in nearly their whole extent. 

 This character is wanting in X. emarginnta except on the second seg- 

 ment. The second and third segments are not yellow at the anterior 

 angles as in X. eviargmata. 



