OF WASHINGTON, VOLUME XV, 1913 183 



STILBOPOIDES n. genus. 



The inner margin of the eyes not emarginate, slightly converging towards 

 the vertex; clypeus well separated from the front, the anterior margin 

 rounded; mandibles bidentate; malar space a little shorter than the length 

 of the scape; antenna? of the female thickened apically with the apical joint 

 elongate and slightly longer than the two preceding it; antennae of the male 

 simple, almost as long as the body; front slightly convex; propodeum 

 exareolate, posterior face separated from the dorsal aspect by strong car- 

 ina; spiracles circular in outline; anterior wings with an areola; nervulus 

 well beyond the basal vein; nervellus broken slightly below the middle: 

 claws apparently simple but seen magnified 35 dianeters, finely pectinate; 

 apical joint of the hind tarsi not quite twice the length of the preceding 

 one; first, second and third tergites transversely depressed apically; ab- 

 domen coarsely punctured. 



In Schmiedeknecht's classification this genus runs to Cnemo- 

 pimpla Cameron, but differs in a number of points from the original 

 description of Cameron's genus. The eyes are not sinulate on the 

 inner margin and the areola is triangular, as well as other characters. 

 In Ashmead's classification this runs to Stilbops Forster, but the 

 exareolate propodeum will readily separate this from Stilbops. 



Type: Stilbopoides maculiventris, n. sp. 



Stilbopoides maculiventris, n. sp. 



Female. Length, 10 mm. Head polished, rather densely punctured, 

 posterior orbits shining, practically impunctate; postocellar line about 

 twice as long as the ocellocular line; first joint of the flagellum distinctly 

 longer than the second; the scutum, scutellum, and episternum shining, 

 with small well separated punctures; propodeum closely, sometimes con- 

 fluently punctured with the carina separating the two faces, slightly curved 

 in the dorsal middle; first abdominal segment shining with close well defined 

 punctures laterally, and along the apical transverse furrow striato-punc- 

 tate; second and third tergites similarly punctured except' the punctuation 

 tends to a transverse striato-puncturation; fourth and following ter- 

 gites finely reticulate, shining. Black; spot on the clypeus orange yellow; 

 spot on the mandibles, tegulse, posterior margin of the pronotum, apices 

 of the coxa? beneath, anterior trochanters beneath, sternites, except spots 

 laterally, white; sides of the scutum, scutellum, most of the mesepister- 

 num, mesosternum, dark rufous; legs rufo-testaceous, except where men- 

 tioned, and the dark brown posterior tibise and tarsi; wings hyaline, 

 iridescent, venation black. 



Male. Length, 10 mm. Disregarding the sexual characters, the male 

 agrees well with the female except that there is no rufous on the thorax 

 and the apices of the posterior femora are black; first joint of the flagellum 

 slightly longer than the second; posterior ocelli. prominent ; cochlearium, 



