268 KANSAS UNIVERSITY QUAR'lERLY. 



mostly concealed beneath white tomentura. Wings hyaline, the costal 

 cell yellowish brown; broadly across the middle of the wing brownish; 

 the distal part cinereous. Length 8 mm. 



One specimen, Albuquerque, N. M., F. H. Snow, August. 1894. 



Desmatomyia, gen.nov. 



Head as broad as the thorax, transverse. Front broad, only a 

 little narrowed above, with a longitudinal groove in the middle. An- 

 tennae elongate, stout; first joint longer than broad; second joint a 

 little broader than long; third joint flattened, elongated, gradually 

 tapering; style large, flattened, composed of two distinct joints, the 

 first a little broader than long and with distinct constrictions distally 

 and proximally; second joint ovate, more than twice as long as wide, 

 a little wider in the middle than the first joint, obtusely pointed and 

 without bristle or hairs; altogether the length of the antennae is about 

 twice that of the head. Face retreating, very short; oral opening 

 moderately large; cheeks nearly horizontal transversely, together 

 equal to a little less than one-half the distance between the eyes 

 below. Proboscis small, with the palpi wholly concealed within the 

 oral cavity. Thorax short, convex, almost wholly bare (a few very 

 short bristles are seen above the root of the wings); scutellum oval, 

 with a few hairs. Abdomen short and broad, nearly as broad as 

 long, wholly bare; genitalia concealed. Legs moderately stout, 

 almost wholly bare, the femora and the four posterior tibiae with short 

 spinules. Neuration resembling that of some species of Geron, save 

 that there are four posterior cells; the second vein takes its origin 

 acutely, opposite the proximal end of the discal cell; first posterior 

 cell broadly open; second posterior cell sessile, that is, the vein back 

 of it springs from the fourth vein at the angle of the discal cell; 

 discal cell small, the penultimate section of the fifth vein (the vein 

 bordering the discal cell posteriorly) nearly as long as the ultimate 

 section; anal cell narrowly open; marginal cell not at all expanded at 

 the extremity; two submarginal cells, the outer one narrow and long. 

 Tegulce small. Pulvilli padlike; no empodia. 



Desmatomyia anomala, n . sp. 



Black. Front, face and cheeks thinly whitish pollinose, opaque. 

 Mesonotum with shining stripes between the grayish pollen. Scutel- 

 lum opaque grayish. Pleurae thickly gray pollinose. Halteres light 

 yellow. Abdomen shining black; each of the segments with a narrow, 

 light yellow hind margin, the last one occupying nearly the whole 

 segment. Legs reddish yellow; femora, except the tip, black, the 

 tarsi brown or brownish. Wings cinereous hyaline. Length 4 mm. 



