256 A. L. MELANDER. 



<EDAL.EA Meigen. 



Small, slender, almost glabrous species of shining black color. 

 Antennae long, plainly three jointed, the first two joints short, the 

 third lengthened, with a short, rather stout, two-jointed arista. 

 Proboscis shorter than the head. Eyes of male contiguous, of 

 female separated. Thorax prominent; abdomen long and slen- 

 der ; hypopygium small. Legs slender, except the thickened and 

 lengthened hind femora, which are spiny beneath ; the hind tibiae 

 are bowed, shorter than the femora. Wings with, simple third 

 vein ; discal cell present, apically with three veins ; anal cell (in 

 our species) truncate ; anal angle well developed, rectangular. 



Oedalea ohioensis sp. nov. (Figs. 74, 75, 76). 

 Male. Length 3 mm.— Body black, shining. Occiput shining black. Eyes 

 large, brownish red, facets small, eyes contiguous above antennse. Face shining 

 black, not broad, the sides parallel. Antennae broken beyond the first joint 

 which is piceous. Proboscis fusco-piceous, haustellate, equalling one-third the 

 eye height; palpi not visible in this specimen. Thorax large, very shining, 

 sparsely covered with pale short hairs, no bristles, except two small preal^r and 

 six piceous scutellar ones. Abdomen less shining, cylindrical, slender, a little 

 longer than the head and thorax together, sparsely covered with short dusky 

 hairs; hypopygium small, pointed, with a short thick dorsal process which is 

 bent to the right. Coxse, front and middle legs and hind femora pale testaceous, 

 the hind tibiae, except basal fourth, piceous; hind tarsi fuscous; front and mid- 

 dle legs plain, slender, hind femora thickened, reaching to the end of the abdo- 

 men, provided with a fringe of long pale hairs, beneath on the outer half with a 

 double row of small black teeth ; hind tibiae two-thirds the length of the femur, 

 at basal fourth geniculate. Halteres pale fuscous. Wings lightly infumated, 

 stigma dark, all the discoidal veins reaching the margin, veins strong, dark fus- 

 cous, except the vein between the two basals, anal cross-vein perpendicular to 

 the anal vein which is attenuate, but reaches the margin, anal cell shorter than 

 the second basal cell, anal angle well developed, rectangular. 



A single male, collected at Vinton, Ohio, by Prof. James Hine in 

 the early part of June, 1900. This is the first reported occurrence 

 of this genus upon this continent. 



EUTHYNEURA Macquart. 

 Small, sparsely hairy shining species. Antennse shorter than the 

 head, in our species apparently two-jointed, the outer joint sublance- 

 olate and with a very short arista. Proboscis in the iVmerican spe- 

 cies not longer than the head. Eyes of the male contiguous, of the 

 female separated. Thorax large. Legs rather long, the hind meta- 

 tarsi slightly thickened, hairs of legs short. Third longitudinal vein 



