430 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. 



following joints are moniliform, except the last, which is ovate; all the 

 flagellar joints have rather short stiff bristles; the head is globose, while 

 the scutellar fovea is a little more deeply impressed than in the female. 



Habitat. — Arlington, Ya. 



Types in Coll. Ashmead. 



Ceratopria megaplasta, sp. iiov. 



9. Length, 1.1""". Polished black, impunctured; cheeks behind, 

 collar and metathorax woolly; antenn;e wholly black, the scape piceous 

 beneath; legs yellow. Head oblong, very little wider before tl.an 

 behind, covered with some long, sparse hairs. Antennie 12-jointed, 

 clavate; first fuuiclar joint abont as long as the ijedicel but more 

 slender, cylindrical, the following joints moniliform, very slightly 

 increasing in size to the club; club 3-jointed, the first and second joints 

 quadrate-moniliform, the last oblong, a little larger than the 2 preceding 

 joints together. Scutellum fiat, Avith 2 small foveas at base. Wings 

 hyaline, fringed, the stigma yellowish. Abdomen ovate, black, polished, 

 the petiole short, stout, rugose, fully as wide as long. 



Habitat. — Ottawa, Canada. 



Type in Coll. Ashmead. 



A single specimen, received from Mr. W. Hague Harrington, differs 

 from the preceding species in the color of the antennie, the proportions 

 of the auteunal joints and in the shape of the abdomen. 



Ceratopria bifoveolata, sp. no v. 



9 . Length, 1""'. Agrees in shape and general appearance with C. 

 megaplttfita, hut with the following differences: The an tenn;e, except 

 the club and the legs, are reddish-yellow; the first fuuiclar joint is a 

 little shorter than the pedicel; the abdomen oblong-oval, obtusely 

 rounded at tip; while the petiole is short and so woolly that its sculp- 

 ture can not be made out; otherwise it agrees perfectly with C. mega- 

 plasta. 



Habitat. — Harpers Ferry, W. Va. 



Type in Coll. Ashmead. 



A single specimen. Taken by Mr. E. A. Schwarz, June 19, 1891. 



Ceratopria pusilla, sp. iiov. 



9. Length, 0.8""". Polished black, impunctate; antennfe, except 

 the club and the legs, honey-yellow. Head a little longer than wide. 

 Antennae 12-jointed; the club abrupt, 3-jointed, black, the first joint 

 not half the length of the second and much narrower, the last ovate, 

 longer than the ineceding joint; first fuuiclar joint a little longer than 

 thick, the following to last scarcely as long as thick, the last transverse. 

 Scutellum Avith a curved, slightly impressed line at base. Wings hya- 

 line, i^ubesceut, Avith short cilia. Abdomen oblong, black, polished, 



