24 PROCEEDINGS OF THE NATIONAL. MUSEUM. vol.60. 



Male. — Length, 6 mm. Head broad behind eyes, the temples weakly 

 sloping; vertical prominence very high, in profile thin at apex and 

 thornlike; vertex and temples coarsely punctate, the vertex very 

 grossly so ; f rons reticulate punctate ; face very coarsely and unevenly 

 rugose with more or less distinct interspersed punctuation ; clypeus 

 transversely rugose with some punctures; labium densely coarsely 

 punctate, truncate at apex; malar space as long as basal width of 

 mandible; antennae 16-jointed. Thorax very grossly sculptured; 

 pronotum with large round punctures becoming elongate and fovei- 

 form along dorsal and posterior margins; mesoscutum reticulate 

 rugose except in middle of each of the three lobes, where it is polished 

 with some fine punctures, prescutum divided medially by an irregu- 

 lar ridge ; scutellum and dorsal and lateral faces of propodeum reticu- 

 late rugose; mesopleurum except centrally coarsely foveate rugose, 

 centrally polished, the foveae of the oblique impression long and 

 foveolate, mesosternum largely foveate, rugose but with a small tri- 

 angular polished and punctate area on each side of middle ; posterior 

 face of propodeum perpendicular, coarsely punctate. Abdomen 

 coarsely reticulate rugose, apically with two teeth about twice as high 

 as their basal thickness ; outer gonapophyses short, straight. 



Black ; legs piceous ; wings subhyaline, slightly inf umate in apical 

 half. 



Type locality. — Agricultural College, Michigan. 



Type.— Q?it. No. 24627, U.S.N.M. 



Described from three males. 



UROSIGALPHUS BARBERI Crawford. 



About 35 additional specimens from such widely separated locali 

 ties as Orange, New Jersey; Washington, District of Columbia; 

 Arlington and Fort Monroe, Virginia; Boerne and Brownwood, 

 Texas; and Pachico Pass, California, seem all to belong here. 

 There is considerable variation in sculpture, size, apparent length of 

 ovipositor, number of antennal joints, and position and size of the 

 abdominal tubercles. Nearly all of the specimens were reared at 

 the Bureau of Entomology from various species of Balaninus in 

 acorns. 



It agrees with crassisculptus Cushman and differs from armatus 

 Ashmead in having the hind legs short, the femur not reaching the 

 apex of the abdomen, and the tarsus shorter than the tibia with 

 short, thick joints; face nearly twice as wide as greatest diameter 

 of eye ; abdomen in female tuberculate at apex ; ovipositor not or 

 barely longer than the body; and the outer gonapophyses in the 

 male very slender and nearly straight, not strongly curved near 

 apex as in arTnatus. 



