Syrphidae of Nebraska 23 



One above the anterior coxa, one in front of wing, one each on the meso- 

 pleura, sternopleura, and hypopleura. Halteres reddish-yellow. Scutel- 

 lum yellow, the disk black fasciolate. 



Abdomen shining black with faint metallic iridescence, maize yellow 

 banded, the fasciae moderately wide, arcuate, and interrupted medially. 

 The fasciae on the third, fourth and fifth segments wider than the corre- 

 sponding ones on currani. Segments with apical margins banded buff, 

 the bands somewhat narrowed and interrupted in the mid-lateral region 

 on the second and third segments, the anterior margin of the band of the 

 second segment notched at the middle, the buff-yellow posterior margin 

 of the fifth segment produced into a triangular spot, so that between 

 this spot and the broad maize-colored fasciae the black forms an andiron- 

 shaped spot. The shape of this spot is very similar to that of luteopilosa 

 Curran, except that the arms are slightly more sinuate. Venter with the 

 first segment maize yellow, the second with the posterio-lateral margins 

 maize yellow, the third and fourth each with an anterior oblique spot and 

 the posterio-lateral margins maize yellow, the fifth with an anterior spot 

 only maize yellow, the spots largest on the third segment and smallest 

 on the fifth. 



Coxae and trochanters piceous, femora auburn, tibae maize yellowish, 

 tarsi slightly darker, claws black apically. 



Wings smoky hyaline; base, costal and subcostal-cells, proximal 

 parts of first basal and marginal cells lutescent. 



Type. West Point, Cuming County, Nebraska, June. One 

 9 . University of Nebraska collection. This species was de- 

 termined as new by Mr. C. Howard Curran of the Canadian 

 Department of Agriculture, Division of Entomology, who re- 

 turned it undescribed. 



Toxomerus Macquart 

 Toxomerus geminatus. (Say). Jr. Acad. Nat. Sci. Phil., iii, 92, 7; 

 Compl. Writ., ii, 80 (1883); Williston, Proc. Amer. Phil., Soc, 

 XX, 310 (1882). 

 1886. Mesograpta geminata Williston, Synop. N. A. Syrph., 102. 



West Point, Cuming County; Lincoln, Lancaster County, 

 and Omaha, Douglas County, between June 25th and August 

 20th ; five $ 6 and two 9 9 . 



129 



