400 NEW SPECIES OF HYMENOPTERA 



Family NYSSONIDAE 

 Subfamily Astatinae 



Brachystegus maculipes sp. nov. 



9 . Length 4 to 5 mm. Head black, front finely and closely punctured, 

 sparsely covered with short silvery pubescence, clypeus with pubescence 

 somewhat longer; mandibles rufous, black at base; antennae black. Thorax 

 entirely black, sparsely covered with short silvery pubescence; mesoscutum 

 finely punctured medially, more coarsely so toward the sides; episterna and 

 mesoscutellum finely reticulate; upper surface and sides of propodeum coarsely 

 reticulate. Abdomen entirely black, sparsely covered with silvery pubescence; 

 abdominal tergites one to four with a small whitish spot laterally; abdomen 

 dorsally, finely and closely punctured, ventrally with the punctures more sparse 

 and interspersed with a few coarse ones; pygidium a little longer than wide, 

 margined lateral^. Legs black; front tibiae and tarsi somewhat rufous; 

 front and median femora with an elongated whitish spot at the tips. 



cf . Unknown. 



Type, a female taken at Omaha, Nebraska, June 26, 1914, 

 (L. T. Williams). Three paratypes, Omaha, Nebraska, June 

 15, one female; and June 26, two females, (L. T. Williams). 



Similar to opulentus but differs in being entirelj^ black except 

 abdominal markings and in its much smaller size. 



Brachystegus trichrus sp. nov. 



9 . Length 3 to 4 mm. Head black; front finely and closely punctured, 

 sparsely covered with silvery pubescence; apex of clypeus sparsely punctured, 

 without pubescence; mandibles rufous; antennae black. Thorax black, 

 sparsely covered with short silvery pubescence; mesoscutum and mesoscutellum 

 finely punctured; a longitudinal median furrow on the anterior portion of the 

 mesoscutum; episterna more coarsely punctured than the mesoscutum and 

 with more dense pubescence; propodeum finely reticulate with a dense spot 

 of silvery pubescence on each side near the spine; sides of propodeum finely 

 punctured; posterior lobes of pronotum white. Abdomen rufous; last four 

 abdominal tergites black; each tergite with an apical silvery fascia; first two 

 abdominal tergites with a whitish spot on each side posteriorly; pygidium a 

 little longer than wide. Front legs more or less rufous; middle and posterior 

 legs black. 



cf. Unknown. 



Type, a female taken at Omaha, Nebraska, August 18, 1914, 

 (L. T. Williams); paratype, Omaha, Nebraska, July 5, 1913, 

 (L. T. Williams) 



Similar to basilaris but differs in being more finely punctured, 

 smaller in size, and in the abdominal markings. 



