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



borders of all the segments which are yellowish-white pilose. Legs black, black 

 pilose except the under side which is yellow pilose, pulvilli yellow. Wings lightly 

 infuscated, veins black. 



One female, War Bonnet Canon, Sioux County, Nebraska, alti- 

 tude 5,000 feet (M. A. Carriker). Formerly recorded from a male 

 taken at Englewood, Kansas, from the description of which the above 

 shows some variation. 



3. Microdon tristis Loew. 



A female from West Point, Nebraska, June 27, 1906 (P. R. 

 Jones), and a male and female from Halsey, Nebraska, June i, 1906 

 (L. Bruner). The specimen from West Point agrees with Williston's 

 description of the variety ruficriis. 



2. CHRYSOTOXUM Meigen. 



1 . Chrysotoxum derivatum Walker. 



Specimens from West Point, Nebraska and Glen, Sioux County, 

 Nebraska. 



2. Chrysotoxum pubescens Loew, 



One male from Lincoln, Nebraska. 



3. CHRYSOGASTER Meigen. 



1. Chrysogaster lata Loew. 



A male and female taken at Bad Lands, mouth of Monroe Cafion, 

 Sioux County, Nebraska, May 28, 1901, on Astragalus (L. Bruner). 



Shining bronze-black, everywhere with short whitish pile. A silvery white cross 

 band on the upper part of the face below the antennas, narrower in the middle so that 

 there appears to be two triangles with their apices together. Legs wholly black. 

 Wings sublutescent, slightly clouded below the stigma. The front is only lightly 

 rugose on the sides, facial tubercle wanting and epistoma produced. The male which 

 had not been taken heretofore is similar to the female except that it is smaller and the 

 abdomen is not so wide. 



Formerly recorded from British North America and Oregon.' 



2. Chrysogaster nigripes Loew. 



One male from Cedar Bluffs, Nebraska. 



Face is distinctly tuberculate, the epistoma more projecting than the description 

 indicates, and the antennse are darker. The face has a broad white dusted cross- 

 band on the upper part just below the antennae. Wings blackish, lighter toward the 



base. 



Formerly recorded from New York, New Jersey, Connecticut, 

 North Carolina and Quebec. 



