414 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. 



fuuicle, siibclavate; pedicel obconic, louger and thicker than the first 

 fuiiiclar joint; funiclar joints 2 to 5 a little longer than thick; the 

 sixth not longer than thick; the seventh transverse; club very large, 

 abrupt, S-joiiited, black; tlie joints quadrate, the last rounded at apex. 

 Anterior angles of thorax acute, piceous; the scutellum Avith a small, 

 shallow fovea at base, separate*! into two parts by a delicate carina, a 

 slight groove at each side posteriorly, the apex truncate; inetathorax 

 short, yellowish, with a central carina. Abdomen oblong-oval, polished 

 black, the petiole yellow. 



Habitat. — District of Columbia. 



Type in Coll. Ash mead. 



Lozotropa nificomis, ap. iiov. 

 (PI. XVII, Fig. 8, 9 ; «, head of <? .) 



$. Length, l.C""". Polished black; head twice as wide as thick 

 antero-posteriorly, obliquely rounded oft" posteriorly. Mandibles rufous. 

 Palpi pale. Antennae 14-jointed, rufous, longer than the body; second 

 flagellar joint longer than the first, swollen toward the tip, the joints be- 

 yond to the last, oval-moniliform, twice as long as thick, the last nearly 

 twice as long as the penultimate. Tliorax smooth with deep mesonotal 

 furrows, the middle lobe prominent, convex. Pronotum not impressed 

 at sides in front of the tegula>. Scutellum with a single large, smooth 

 fovea at base. Metapleura finely sculptured, rufous toward the hind 

 coxje. Teguhe rufous. AVings hyaline, jmbescent, with moderately 

 short cilia. Legs, including coxie, reddish-yellow. Abdomen oval, 

 polished, the i)etiole hardly twice as long as thick, finely sculptured 

 an<l pubescent. 



9 . Length, 1.05""". Anteniue, except the abrupt, 3jointed black; 

 club, rufous, flagellar joints 5 to 7 a little transverse; frons with 

 acute tubercles before the eyes; scutellum with a small shallow 

 fovea at base, not divided at base by a carina; postscutellum opacpie, 

 shagrcened; mctanotum, with an acute prominence above, behind the 

 postscutellum, and a deep, oblong fovea above the posterior angles. 

 Wings clear, hyaline, pubescent, while the abdomen is oblong-oval, 

 polished, the petiole finely striated and covered with a griseous wool. 



Habitat. — Arlington, Va. 



Types in Coll. Ashmead. 



Described from specimens taken by myself while beating in low places 

 along the Potomac River. 



"^ ■■" Lozotropa abrupta Thome. 



Basalys ahrupta Tboins., Ofv., p. 368, $ ; Asliin. Can. Ent., xx, p. 54. 



9 . Length, 2""". Polished black, impunctured ; antennae, except 

 the abrupt 3-jointed black club, and legs, rufous. Head subglobose, the 

 frons somewhat flat.but not horned or tubercular. Antennw 12-jointed; 

 scape rather stout, as long as the funicle; pedicel stout, about twice the 



