426 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. 



Abdomen oljlong-oval, polished black, the petiole a little louger than 

 thick, striated, pnbesceut. 



Habitat. — California, Indiana. 



This species is recognized from a single specimen discovered in a 

 small lot of Hymeuoptera, purchased from a collector in California. 



Diapria tetraplasta, sp. nov. 



9 . Length, 1.0"™. Polished black; antenn.T, except the three ter- 

 minal Joints of the club which are black, dark rufous; legs pale rufous 

 or reddish-yellow. Antennie 12-jointed, terminating in a 4-jointed club, 

 the tlagellum two and a half times as long as the scape; pedicel longer 

 and thicker than the first funiclar joint, the following-joints to the club 

 scarcely longer than thick; the first joint of club small, oval, the second 

 larger, the third still larger, transverse, the last longer, conic, but not 

 thicker than the preceding. Scutellum with a shallow, smooth, trans- 

 verse fovea at base. Wings fusco-hyaline, pubescent, and with long 

 ciliae, the marginal vein small, triangular. Abdomen ovate, x)ointed at 

 apex, polished black, the petiole about twice as long as thick, piceous, 

 and tinted. 



Habitat. — Carolina and Washington, D. C. 



Types in Berlin Museum and Coll. Ashmead. 



Described from a specimen in the Berlin Museum, labeled '' Carolina, 

 Zimmernumn," and specimens in my collection from Washington. 



Diapria virginica, kj). nov. 



9. Length, 1.5"^"'. Polished black; antennte, except the 4-jointed 

 club and the legs, reddish-yellow; collar, metapleura and petiole cov- 

 ered with a cinereous wool. Antenna^ 32-jointed; first funiclar joint 

 shorter than the pedicel; the second almost as long as the first; joints 

 3 and 4 very little longer than thick; 5 and rounded; club black, 4- 

 jointed, the first joint not quite as wide, or as long, as the following, rounded 

 behind, cup shaped, the second and third quadrate, the last ovate, one- 

 half longer than the preceding. Scutellum with a shallow, transverse 

 fovea at base; the impressed lateral lines only indicated posteriorly, 

 entirely wanting anteriorly. Wings clear hyaline, strongly fringed, 

 the stigma yellowish. Abdomen ovate, polished black, the petiole 

 short, densely woolly. 



Habitat. — Arlington, Va. 



Types in Coll. Ashmead. 



Described from three specimens. 



Diapria muscae, sj). iiov. 



$ 9 . Length, 1.0 to 2""". l*olished black, wita some sparse long 

 hairs, the cheeks, collar, metapleura, and petiole covered with a dense, 

 woolly pubescence. Head rounded, when viewed from above, a little 



