358 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. 



Anteniiiv inserted on a frontal pi'oininenct'; in 9 ir)-jointe(l, siibmo- 

 uiliforiu; the scape subrobust, extending sli<>htly beyond the ocelli, cyl- 

 iudric; pedicel oblonji; first Hagellar joint longer, obeonic; the joints 

 after the fourth, nioniliforni or snbnioniliforni, the last ovate; in S 14- 

 jointed, long, filifonn. the lirst Hagellar joint about two-thirds the length 

 of the scape, the following a little shorter, all covered with a short 

 pubescence. 



Maxillary palpi long, r)-jointed, the last joint tiie longest; labial palpi 

 short, 3- jointed. 



Mandibles short, curved, acute at tij), with a small tooth within. 



Thorax as in Bdytu, but with a large, acute spine at base of nieta- 

 thorax, the scutelUini highly convex, with a furrow at sides, the pos- 

 terior angles of the metathorax acute. 



Front wings pubescent, with a basal cell and a closed marginal cell, 

 rarely a little open toward apex. The marginal cell is always distinctly 

 longer than the marginal vein, the stigraal being more or less oblique; 

 hind wings witli one cell. 



Abdomen oval or oblong-oval, the petiole stout, fluted, a little longer 

 than thick (longer an<l more slender in the i ), the second segment 

 very large, occupying most of the surface, sulcate at base, the tbllow- 

 ing segments very short. 



Legs as in Belyta, pilose, the tibial spurs distinct, basal joint of hind 

 tarsi twice as long as the second. 



Oxylabis spinosus Prov. 

 (I'l. XIV, Fig. 5, 9.) 



Anem-rliynchus spinosus Prov., Faun. Hyni., ii, j). 560. 

 Oxylabis spinosus Prov., Add., p. 405. 



9. Length, 2.5""". Robust, polished black; legs and antennfe ru- 

 fous. Antenna 15-jointed, submoniliform ; the pedicel is about half as 

 long as the first flagellar joint, which is the longest joint; the three fol- 

 lowing joints longer than thick, the remainin;? joints moniliform. Meso- 

 ]iotuui with two broad, deep furrows. Scutelhmi with a deej) fovea 

 at base, i)osteriorly elevated, convex. Postscutellum with a large, 

 acute, rufous spine. Metathorax with a central groove, posteriorly mar- 

 gined, the angles acute. Teguhe rufous. Wings fu.scous, the marginal 

 vein long, the marginal cell almost closed. Abdomen oblong-oval, cov- 

 ered with a grayish iiubeseeuce; the petiole broad and stout, hardly 

 longer than thick, fluted; the second segment very large, with sparse 



punctures and channeled or grooved at base, the following segments 

 very short. 



Habitat. — Cap IJouge, Canada, and Arlington, Va. 



Type 9 in Coll. Provancher. 



The above description is drawn up from a specimen, agreeing in all 

 particulars with Provancher's description, and collected by myself in 

 Virginia. 



