354 BULLETIN 41, UNITED STATES NATIONAL MUSEUM. 



nionililbnii, the last very huge, fusifoini, as h»ng as the two [ireeediug 

 joints together; in S 14 jointed, tiliCorni, the tirst tlagellai' joint not, or 

 scarcely, eniarginate at base. 



Maxillary pal})!, 4-jointed; labial palpi, 3-jointed. 



jMandibles short, acute, Avitli a small tooth Avithin. 



Thorax subovoid, the })rothorax visible above as a transverse ridge, 

 produced anteriorly into a slight neck, angles straight; mesonotum 

 trapezoidal with 2 deep furrows; scutelluni convex with a deep fovea 

 at base; nietathorax carinated, with the i)Osterior angles acute. 



Front wings pubescent with a basal and a closed marginal cell; the 

 marginal vein not as long as the marginal cell ; the first branidi of radius 

 straight or but slightly obliipie; hind wings with a single cell. 



Abdomen conic-ovate, the petiole a little longer than thick, tinted; 

 in 9 7-jointed, the second segment very large, third to sixth very short, 

 the last acute, conical, longer than segments 3 to 6 united. 



Legs clavate, pubescent; the nnddle and hind tibial spurs short and 

 weak ; the tarsi long, slender, the basal joint more than twice the length 

 of the second. 



Acropiesta flavicanda, sp. iiov. 

 (PI. XIV, Fig. 3, 9-) 



9. Length, 3""". Black, shining, the last abdominal segment yel- 

 low. Antenna' 15-jointed, extending to apex of metathorax, incras- 

 sated toward tips, rufous, the last joint large, oblong, dark fuscous; 

 first fiagellar joint twice as long as the second, the joints beyond 

 moniliform. Thorax with two farrows, the scutellum with a large 

 deep fovea. Metathorax carinated, the sides covered with a fuscous 

 pubescence. TeguLe yellowish. Wings subhyaliue, the venation 

 fuscous, the marginal vein two-thirds the length of the closed marginal 

 cell, the first branch of the radius slightly obliijue. Legs rufous. 

 Abdomen conic-ovate, black, polished, the petiole not longer than the 

 metathorax, fluted; the third, tourth, fifth, and sixth segments very 

 short, the last longer than these united, conical and yellow. 



Habitat. — Ottawa, Canada. 



Type in Coll. Ashmead. 



Described from a single specimen received from Mv. W. Hague 

 Harrington. 



Acropiesta siibapteia, sp. nov. 



9. Length, 2.2'""'. Head globose, black; tliorax and abdomen 

 brownish-piceous; scape, pedicel, and legs brownish yellow. The 

 whole body is polished, impuuctured, and pubescent; the froutal 

 prominence large; antennsB 15-jointed, moniliform, the first flagellar 

 joint twice as long as the second, cylindric, joints 2 to ."> round, from 

 here to the last transverse-moniliform. Thorax with two almost par- 

 allel furrows, very slightly converging toward each other jmsteriorly; 

 scutellum convex, with a deep (juadrate fovea at base; mesopleura 



I 



