124 Journal New York Entomological Society. [Voi. xvin. 



the laterals ; thorax with silvery pubescence, pronotum arcuate behind, meta- 

 thorax short, rounded ; abdomen very slender, pale yellowish red on the 

 basal half, beyond black, apical segment white above ; the legs, including coxae, 

 are yellowish red, but the middle and hind tarsi are blackish brown, hind 

 tibiae also brownish ; the spurs white. Wings hyaline, apex dark ; marginal 

 cell acute at tip, third submarginal cell hardly as long as the second, but 

 little narrowed above, second rectirrent vein arising beyond middle of anal 

 cell, running nearly vertically to middle of third submarginal cell ; basal veins 

 almost interstitial ; stigma dark. Length, 6 mm. 



From Fedor, Lee Co., Texas (Birkmann). 



Pseudagenia birkmanni, new species. 



Male. — Black, spurs white, base of abdomen reddish, apical segment white 

 above; most of body with silvery pubescence. Clypeus truncate; vertex 

 rounded ; anterior ocellus rather more than diameter from the laterals ; 

 antennae quite short, third joint but little longer than first. Pronotum sub- 

 angular behind ; metathorax short, rounded ; abdomen slender, subpetiolate, 

 segments one, two and most of three reddish both above and below, last 

 segment white above. Legs slender, black, tarsi pale, longer spur of hind 

 tibiae more than one half length of metatarsus. Wings but little fumose, 

 marginal cell long, acute, second and third submarginal cells subequal, plainly 

 longer than broad, and slightly narrowed above, first recurrent vein before 

 middle of second submarginal, second recurrent at middle of third submar- 

 ginal, this vein arising from middle of anal cell, and faintly bent out- 

 ward. Length, 6 mm. 



From Fedor, Lee Co., Texas, Ji-ine (Birkmann). A specimen 

 irom Glencarlyn, Va., is apparently the same, but the abdomen is 

 reddish only on first and second segments, and the first has a blackish 

 median spot. 

 Pseudagenia externa, new species. 



Female. — Black, with some slight white pubescence ; the legs yellowish 

 red, but the four hind tibiae and tarsi are black on the outer side, also the 

 anterior tibiae slightly, and the first and second segments of the abdomen 

 have on each side a distinct rufous spot ; the spurs are yellowish, similar to 

 the femora, not white. Clypeus truncate ; head narrow, narrower than in 

 P. mellipes ; eyes large, and inner orbits subparallel ; vertex nearly straight 

 across ; anterior ocellus a little more than diameter from the laterals ; third 

 joint of antennae one and a half times as long as first; pronotum rather long, 

 longer than in P. mellipes, subangulate behind, metathorax silvery on the 

 posterior corners, narrower and less convex than P. mellipes; abdomen rather 

 narrow, subcompressed near tip. Legs long and slender, hind tarsi rather 

 longer than P. mellipes, the longer spur hardly one half length of metatarsus. 

 Wings smoky, marginal cell rather short, not acute at tip, second and third 



