170 Proceedings of the Biological Society of Washington. 



postpetiole brownish. Some males have the thorax including hind femora 

 and coxae mostly stramineous and the propodeum mostly reddish. Flagel 

 sometimes 20-jointed. Mr. Nathan Banks has collected males at Falls 

 Church, Va., June 24, July 6, August 14 and at Glencarlyn, Va., May 30. 

 Mr. Banks has collected females at the same localities on June 24 and 

 May 30, respectively, he has also collected females at Chain Bridge, Va., 

 June 14, and at N. Fork Swannanoa, Black Mt. , N. C, in May. Mr. 

 W. L. McAtee has collected pale males of this species at Plummers Id., 

 Maryland, August 25, 1912, and at Great Falls, Md., August 15, 1915. 

 The above notes are the result of the study of twenty-nine specimens. 



Sagaritis ruficoxalis new species. 



Type, Cat. No. 20457, U. S. National Museum. Four-mile Run, Vir- 

 ginia, April 25, 1915, L. 0. Jackson; June 17, 1914 (W. L. McAtee). 



Superficially somewhat like Campoplex f subtenuis Cresson. 



i^ema/e.— Length 5.5 mm. ; black, covered with silvery pubescence, 

 ocellocular line distinctly longer than greatest diameter of lateral ocellus 

 shorter than postocellar line, the latter shorter than the ocellooccipital 

 line, inner edge of eyes almost parallel, slightly emarginate, malar line 

 nearly as long as the mandibles are wide at base and longer than the 

 clypeocular line, head finely sculptured, dullish, antennae 31-jointed, first 

 joint of fiagel distinctly longer than the second but shorter than the sec- 

 ond and third combined, scape almost entirely blackish, mandible yellow 

 with brownish tips, palpi yellowish white; thorax finely sculptured, not 

 especially shining, the dorsulum almost uniformly sculptured tliroughout, 

 most of the middle third of the posterior half alone a little coarsely 

 sculptured, mesopleurae with a shallow fossa between the upper and 

 lower half, the former more distinctly shining than the lower half and 

 partly striate, sternauli developed nearly half way back on the mesopleurae 

 wing base, tegulae, fore and mid distal trochanters yellow, wings with a 

 brownish tinge, stigma and veins brownish stramineous, the former except 

 on its anterior edge paler than the latter, venation as in Sagaritis pro- 

 vancheri D. T. , legs including the coxae mostly reddish, fore and mid 

 legs with their proximal trochanters, and base of their metatarsi yellow- 

 ish, fore and mid tarsi with first two joints stramineous, the following 

 joints fuscous, fore tibiae stramineous, mid tibiae yellowish at base and 

 near the middle, elsewhere brownish stramineous, hind tibiae brownish 

 stramineous with a subbasal and an apical dark brown band, hind tarsi 

 fuscous with the base of the joints stramineous, beyond the metatarsus 

 inconspicuously so, hind tibial spurs pale stramineous, propodeum 

 shining, finely sculptured, the areola hexagonal, finely reticulated and 

 separated from the petiolarea by a poorly defined carina, petiolarea 

 transversely striate, basal area about twice as wide at base as at apex, 

 costulae well developed, areola hardly more than half as long as the 

 petiolarea; abdomen black, with the apical edge of the postpetiole 

 stramineous, second and third tergites black at base, reddish elsewhere, 

 the thyridii reddish, and transversely oval, nearer the lateral edge than 



