288 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.58. 



mandible; orbits swollen above antennae; diameter of lateral ocellus 

 equal to ocell-ocular line and one-half postocellar line; thorax and 

 propodeum opaque shagreened, the shagreening interspersed with 

 small punctures, denser and coarser laterally and on propodeum; 

 lateral impression of mesopleurum polished above, striate below; 

 areola pentagonal, nearly equal in length to the petiolar area, the 

 costulae near anterior end; basal median area long triangular, more 

 than half as long as areola; petiolar area transversely rugulose; 

 stigma barely half as wide as long, the radius just beyond the middle; 

 apical abscissa of radius straight, twice as long as basal; second 

 recurrent slightly beyond intercubitus, more than half as long as 

 basal abscissa of subdiscoideus, latter at upper third of apex of 

 second discoidal cell; nervellus antefurcal, broken very near base; 

 legs slender; abdomen with first two tergites longitudinally striate, 

 others shagreened; first tergite no longer than dorsal length of pro- 

 podeum; second somewhat shorter than first, hardly three times as 

 long as basal width; ovipositor about as long as fii*st three tergites. 



Black, tergites beyond second piceous, narrowly reddish at apex, 

 especially above; orbits, with narrow interruptions opposite ocelli 

 and in malar space, cheeks, mandibles at base, clypeus, median spot 

 on face, scape, and pedicel beneath, and apices of flagellar joints 

 yellow; wing base, costa, and streak on costal margin of stigma 

 whitish; wings hyaline, venation, except as noted, dark brown; front 

 and middle legs stramineous with coxae and trochanters in front 

 white, tibiae and tarsi more or less fusco-testaceous; hind coxae and 

 trochanters piceous, apices whitish; femur fusco-testaceous with a 

 white spot exteriorly at apex ; tibia and tarsus fuscous, calcaria white. 



Male. — Length, 10 mm.; antennae, 8 mm. 



The allotype is much larger than the type female, and differs 

 otherwise principally as follows: Ocelli distinctly longer than ocell- 

 ocular line and equal to postocellar line, which is not nearly twice as 

 long as ocell-ocular line; malar space barely half as long as basal 

 width of mandible; apex of clypeus black; face without median yel- 

 low spot; antennae black with onl}^ apices, of scape, pedicel, and 

 flagellar joints yellow; propodeal carinae very strong and high; hind 

 coxae testaceous, piceous at extreme base, their trochanters and 

 femora also paler than in female, tibiae and tarsi nearly black. 



Host. — DorcascJiema nigr'um Say. 



Type locality. — Syracuse, New York (?). 



Type.— C&t. No. 22153, U.S.N.M. 



Described from one specimen of each sex reared by M. W. Black- 

 man at Syracuse, New York, from hickory infested by the host and 

 other species of Coleoptera, the cocoons being found in the pupal 

 cells of Dorcaschema nigrum. The type is labeled ''H-88," and the 

 allotA'pe "H-583." 



