THE CANADIAN ENTOMOLOGIST. 101 



New Mexico [Gaumer]. which form the types of the species j in the 

 collection of the Kansas University, two males from the Magdalena 

 Mountains, in New Mexico [Snow] ; and in the collection of the Uni- 

 versity of Nebraska, one male, taken in War Bonnet Canyon in the 

 extreme north-western part of Nebraska. This last specimen agrees 

 exactly with Williston's description except that the antennas are entirely 

 red. 

 Xylota flavitibia, Bigot. 



This species has been recorded from Colorado, by Williston, and 

 from Colorado and New Mexico, by Snow. The collection of the University 

 contains one male specimen taken in War Bonnet Canyon, Nebraska. 

 Xylota frandulosa^ Loew. 



The collection of the University of Nebraska contains numerous 

 specimens taken near Milford, Neb., in June, on the flowers of Primus 

 americaiins. It has also been recorded from several localities in the 

 East, and from Illinois, Wisconsin, and Washington, in the West. 

 Xylota angustiventj-is, Loew. 



This species has been recorded from New York, Penn., and 111., but 

 not, hitherto west of the Mississippi River. A single male specimen from 

 War Bonnet Canyon, in extreme North-western Nebraska, has the wings 

 hyaline, the third segment of the abdomen shining, except a very broad 

 posterior band which projects almost to the anterior margin. The fourth 

 segment is entirely shining. 



Xylota obscura, Loew. 



There is in the collection of the University of Nebraska, one 

 female specimen taken in War Bonnet Canyon, Nebr. This species has 

 been recorded from Oregon, California, and the Red River of the North. 

 The description applies exactly. 

 Spilomyia quadrifasciata, Say. 



One female specimen taken at Lincoln, Nebr., in September, by the 

 writer. With the exception of the record of several specimens in Eastern 

 Kansas, by Snow, this species has not been recorded outside of some of 

 the extreme Eastern States. This specimen was taken on the flowers of 

 Aster multiflorus. 

 Sphecomyia vittata, Wied. 



In the University collection there are two specimens, one from 

 Belmont, Nebr., and the other from War Bonnet, thirty miles distant. 

 This species has been recorded from the Eastern and Southern States, 

 and Minnesota and Colorado, in this country, as well as from localities in 

 Northern Europe and Siberia, 



