187 



with a violet roHoction ; tlu' brown somewhat fainter in the center of several 

 cells, and along the posterior margin. Small cross-vein on postfrior margin 

 present. 



Habitat, Norton's Landing, Cayuga Lake, N. Y. A single female 

 taken in July by Mr. J. H. Comstock. This s]»ccies seems not un- 

 like M. crassipes Westw. in coloring, but is much smaller, has much 

 darker wings, an opaque (and not shining) thorax, etc. (I never 

 saw Westwood's species.) 



Mydas chrysostomus n. sp. 



5 . — Black, face with a tuft of golden hair, abdominal segments 

 2, 3, 4 with red margins posteriorly, legs black, wings tinged with 

 brown. Length, 25-30 mm. Wing, 21 mm. 



Black ; the incrassated portion of third antennal joint dull reddish, except 

 the tip, which is blackish. Face with a tuft of golden yellow hair. Thorax 

 of a smoky black, opaque above. Abdomen black, shining, except the first 

 segment, which ia opaque ; a narrow band on the posterior margins of the 

 2d, 3d and 4th segments rufous, edged with yellow along the margin ; on the 

 4th segment this band is much narrower and somewhat indistinct in the 

 middle. Feet black ; hind tibiae with a strong spur ; hind femora with two 

 rows of short, but strong spines on the underside; ungues dull reddish, tipped 

 with black. Halteres black. Wings strongly tinged with brown, although 

 less so than in M. clavatus. Small cross-vein on posterior margin present. 



Habitat, Dallas, Northern Texas. A single male collected by Mr. 

 Boll. This species seems to have many characters in common with 

 M. fulvifrons Illig. but it differs in the coloring of the abdomen. 



