AMERICAN HYMENOPTERA. 349 



3. X. infuscata. 



Xyela infuscata, Harris Catalogue. Norton, Bost. Proc. viii. ISfil, 224, %. 



Fuscous brown, venter and legs reddish yellow. Length 0.24. Br. wings 0.52 

 inch. 



% . — Fuscous brown, almost black ; antennae black, basal joint almost 

 covered witli pale hair; uasus, labrum, base of mandibles, tegulse, most 

 of abdomen beneath and the lep;s, dull reddish yellow ; posterior tarsi 

 blackish ; five spurs on each of the four hinder tibiae ; wings smoky 

 hyaline, cells as in X. ferniginea ; lanceolate cell large, with oblique 

 cross-line ; hinder wings with three inner cells, two submarginal and 

 one beneath. 



Massachusetts (Harris Coll.). One % . 



B. — Antennae 12-jointed; second and third submarginal cell, each with a re- 

 current nervure. 



4. Xyela minor, n. sp. 



Blackish piceous, with ferruginous venter and legs, wings very large. Length 

 0.10, with ovipositor 0.14. Br. wings 0.32 inch. 



9 . — Color, variable shades of piceous ; antennae 12-articulate, the 

 third joint nearly as long as remainder of flagellum, the remaining nine 

 articles covered with coarse spiky hair; head and thorax shining, 

 cancellate, mandibles 3-toothed, the teeth much smaller on one of them ; 

 mouth and anterior part of scutel white, a spot about ocelli, a line on 

 occiput on each side of ocelli and two others (sometimes obsolete) run- 

 ning from outer ocelli to antennas and spots on back of head, brownish 

 black; a wide dark line on each side lobe of mesothorax ; two slender 

 ones along sutures and another above scutel ; tergum more or less 

 black, body beneath pale, legs yellowish; four hinder tibiae with five 

 spurs ; wings faintly clouded, nervures and stigma yellowish, cells as 

 in previous species, but two inner cells in underwings. 



Washington, D. C. (Baron Osten Sacken) ; Pennsylvania, (Smiths. 

 Inst.). Mass. (Coll. Am. Ent. Soc.) 6 9 . 



In one specimen, on one wing the second and third submarginal cells 

 each receives a recurrent nervure as in the European species, while on 

 the other winu' the third submaro;inal receives both nervures. 



Family UROCERID^, Leach. 



AUiomen in its whole width soldered to the breast. 



OvipoRitor filiform, exserted, long, inclosed in a groove beneath the 

 abdomen or arising from a deep cleft beneath the sixth segment and 

 extending backward beyond the apex of the abdomen. 



Anterior tihisc with one spur. 



Frothorax and collar elongate. 



