414 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. 



fimicle, .subclayate; pedicel obcouic, longer and thicker than the first 

 funiclar jointj fnniclar joints 2 to 5 a little longer than thick; the 

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

 abrupt, 3-jointed, black; the joints quadrate, the last rounded at apex. 

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

 shallow fovea at base, separated into two parts by a delicate carina, a 

 slight groove at each side posteriorly, the apex truncate; meta thorax 

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

 black, the i)etiole yellow. 



Uabitat. — District of Columbia. 



Type in Coll. Ash mead. 



Loxotropa ruficornis, sp. iiov. 



(I'l. xvii, Fig. S, 9 ; a, head of ^ .) 



S. Length, l.() Polished black; head twice as wide as thick 



antero-posteriorly, oblii^uely rounded off posteriorly. ^landibles rufous. 

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

 tiagellar 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. Thorax smooth with deep mesonotal 

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

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

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

 .coxic. Teguhc rnfous. Wings hyaline, pubescent, with moderately 

 short cilia. Legs, including coxa^, reddish-yellow. x\bdomen oval, 

 polished, the petiole hardly twice as long as thi(;k, finely sculptured 

 and jDubescent. 



9. Length, l.()5""". Anteniue, except the abrupt, 3-jointed black; 

 club, rufous, fiagellar 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 opatiue, 

 shagreened; metanotum, 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 x>eti()le finely striated and covered with a griseous wool. 



Habitat. — Arlington, Va. 



Types in Coll. Ashmead. 



Described from specimens taken by myself while beating in h)w places 

 along the Potomac Kiver. 



Loxotropa abrupta Thorns. 

 Basahjs ub nipt a T\w\n»., Ofv., p. 3(58, 9 ; Ashiu. Can. Ent., XX, p. 54. 



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

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

 frons somewhat fiat, but not horned or tubercular. Antenna' 12-jointed; 

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



