240 BULLETIN IIG, UNITED STATES NATIONAL MUSEUM. 



without cilia below. Posterior tibiae but little thickened, more so 

 at tip and on inner side just before the middle; blackisli at tip on 

 inner side, also with a slight brownish shade at base on upper side 

 and on inner side where the swelling is near the middle; the usual 

 glabrous stripe on u])per surface distinct, but broken by little hairs. 

 All tarsi black from the tip of the first joint; fore and middle ones a 

 little longer than their tibiae, the former with the first joint about as 

 long as the remaining four taken together. Calypters and halteres 

 yellow, the former with black cilia. 



Wings (fig. 175) grayish, with a slight brown tinge in front of third 

 vem, costa scarcely enlarged at tip of first vein; last section of fourth 

 vein bent before its middle; hmd margin of wing quite deeply notched 

 at tip of fifth vein, and with a conspicuous sinus between the tip of 

 fifth and sixth veins, leaving a small lobe back of fifth vein; although 

 the anal angle is prominent there is scarcely what could be called a 

 lobe at tip of sixth vein. 



Female.— FsiCG wide, grayish white; the body color is more bronze- 

 brown than green; wings (fig. 1756) without the slightest enlarge- 

 ment of the costa at the tip of the first vein; their hind margin not 

 quite so deeply notched at tip of fifth vein, although considerably so, 

 and without sinus; the anal angle is rounded off, not at all prominent, 

 the hind margin being evenly rounded. Middle tibiae with a row of 

 four large bristles below, one of which is a little to one side of the 

 line of the others, their basitarsi without a bristle above. 



Described from 1 pair taken at Southern Pines, North Carolina, 

 May 1, 1912, by A. H. Manee. 



Type and allotype. — In the collection of Mr. Nathan Banks, Cam- 

 bridge, Massachusetts. 



This is much like fulvipes Loew, but the whig has a deep notch at 

 tip of fifth vein, in fulvipes there is only a small notch, and the sinus 

 is much deeper between the tips of fifth and sixth vems, leavmg a 

 distmct lobe at tip of sixth vein, while in carolinensis there is no lobe 

 at that pomt but a small one just back of fifth vein caused by the 

 deep notch at fifth vein. 



No. 176. DOLICHOPUS IMPERFECTUS, new species. 



Male. — Length 4.7 mm.; of wing 5 nmi. Face rather narrow with 

 parallel sides, reaching nearly to the lower corner of the eye, rounded 

 on lower edge, silvery white, only a little yellowish just below the 

 antemiae. Front dark shinmg green. First two anteimal joints 

 yellow, first joint ratlicr long with conspicuous black hairs (third 

 joint missing). Lateral and inferior orbital cilia whitish, about six 

 of the upper cilia on each side black. 



Thorax dark shinhig green with bronze and blue reflections and 

 with a coppery spot on each side at the suture; pleurae dulled with 



