Syrphidae of Nebraska 39 



Five $ s and eleven $ 9 taken at Lincoln and Roca, Lan- 

 caster County, and South Bend, Cass County, between April 

 29th and May 29th. 



Neoascia Williston 

 Neoascia globosa (Walker). List., iii, 546 (1849); Williston, Synop. 

 N. A. Syrph., Ill (1886). 

 1882. metallica Williston, Proc. Amer. Phil. Soc, xx, 515. 



One $ from Bellevue, Sarpy County, May 9, 1908 (L. Bru- 

 ner). This specimen is the variety metallica of Williston. 



Sphegina Meigen 

 Sphegina lobata Loew. Cent., iii, 21 (1863) ; Williston, Synop. N A. 

 Syrph., 115 (1886). 



A 9 from Monroe Cayon, Sioux County, June 18, 1911 

 (R. W. Dawson). 



Sericomyinae 

 Condidea Coquillett. 

 Condidea lata Coquillett. Canad. Ent., xxxix, 75 (1907). 



Two $ 2 from Jim Creek and Warbonnet Canyon, Sioux 

 County, in June, 1901. 



VOLUCELLINAE 

 KEY TO THE GENERA 



1. Arista featherly plumose Volucella 



Arista vei*y densely pulmose, appearing like a solid mass. ...Copestyhim 



Volucella Geoffroy 

 KEY TO THE SPECIES 



1. Wings cloudy only on cross-veins; larger species; in front of 

 scutellum a yellowish, rather obscui'e parallelogram, emargin- 

 ate anteriorly; abdomen yellow with narrow black posterior 

 margins; face yellow satur 



145 



