AMERICAN HYMENOPTERA. 253 



middle and apex; marginal cell ovate-lanceolate, first submarginal narrow, 

 pointed toward tlie base, second subquadrate, receiving the first recurrent near 

 the base; legs black, thinly clothed with white hairs, calcaria fuscous; abdomen 

 elongate-ovate, petiolate, narrowed to apex, petiole fuscous, finely punctured 

 thinly clothed with long white pubescence, apical fringe yellow, second and 

 following segments honey-yellow, the apical margins fringed with long yellow 

 pubescence, second segment beneath, fuscous. Length 16 mm. 

 ^«^,._California, (Henry Edwards). 



Agama contracta.-'S --Uniform bright ferruginous, thinly clothed 

 with erect hairs, head rounded, as wide as thorax; eyes round, prominent; 

 flagellura of antennse slightly pruinose; upper edges and tips of mandibles 

 blackish; thorax ovate, rounded posteriorly, minutely punctured, mesothorax 

 with two faintly impressed lines, scutellum rounded, metathorax abruptly 

 truncate, reticulate ; wings fuscous, marginal cell short, ovate, first submarg.nal 

 long, narrow, second subtriangular, its apical nervure sinuate, and receiving 

 the first recurrent near the middle, stigma small, fuscous; tegul^ dark honey- 

 yellow legs thinly clothed with scattered hairs; abdomen ovate-petiolate, 

 short, shining, apical margin of petiole blackish, margins of remaining seg- 

 ments fringed with ferruginous pubescence. Length 9 mm. 

 Hah. — Nevada. 

 ■ Agama atrata.-'^ .-Uniform black; shining, thinly clothed with a few 

 scattered erect hairs; head transverse, as wide as thorax, antenooe fuscous 

 mandibles dark ferruginous; eyes large, round, prominent; thorax robust, 

 ovate, narrowed posteriorly, flanks beneath the wings much swollen; wings 

 hyaline, iridescent, marginal cell very short, arcuate, rounded at apex, first 

 submarginal large, second triangular, receiving the first recurrent near the 

 base third quadrate, receiving the second recurrent before the middle; stigma 

 large, black; tegul^ honey-yellow; femora black, tibi^ and tarsi fuscous, 

 clothed with pale pubescence; abdomen elongate-ovate, petiolate, petiole pyri- 

 form, with a longitudinal dorsal impression, not extending to apical margin, 

 which is constricted, and on ventral surface a longitudinal sulcus, widening 

 at apex; apical margins of segments narrowly fusco-ferruginous. Length 

 7 — 9 mm. . • i j u ii 



jyo5._Nevada. Seven specimens. Easily distinguished by the 

 uniform black color, and extreme shortness of the marginal cell. 



Agama uro.-'S .-Ferruginous; head round, not as wide as thorax, 

 minutely punctured, thinly clothed with erect white hairs; eyes round, promi- 

 nent; scape of antenna finely punctured; thorax robust, ovate, closely punc- 

 tured, mesothorax with two longitudinal, impressed lines, sparsely clothed with 

 erect white hairs, metathorax roundly truncate, coarsely reticulate, excava- 

 tions of the flanks smooth; wings yellowish hyaline, marginal cell ovate 

 lanceolate, abruptly truncate at tip, first submarginal subovate, pointed at 

 base, second subtriangular, receiving the first recurrent nervure before the 

 middle; tegul^ honey-yellow; legs fuscous, clothed with whitish pubescence; 

 abdomen short, petiolate, minutely punctured, smooth, apical margins of seg- 

 ments thinly fringed with white pubescence. Length 10 mm. 



^u^. — Texas. Two specimens. 



