108 PROCEEDINGS OF THE NATIONAL MUSEUM. VoL. 62. 
Thorax and scutellum black in ground color, yellowish pollinose, 
the mesonotum with two faint paler vittae. Pile of mesonotum and 
scutellum long, erect, mixed black and yellow, the majority yellow. 
Pleura thinly gray pollinose, dense yellow pilose. Knob of halteres 
brown, the stem yellowish. 
Abdomen black in ground color, entirely vellowish pollinose on 
the dorsum and venter; largely long, erect, yellow pilose, with a 
few long black hairs above on the last segment and the yellowish 
red genitalia; most of the pile of genitalia yellow, on the upper 
forceps shorter and largely black. Front and middle femora with 
rather long pile, mixed yellow and black. Wings as in the female, 
the base of the wing and the costa yellow. 
Neallotype.—A male, collected at Northbend, King County, Wash- 
ington, July 9, 1920 (KE. P. Van Duzee), [Cal. Acad. Sei.]. 
Specomens examined.—Two males, ten females. 
Distribution.— Distribution according to 2 males and 10 females 
examined is: 
Washington: Northbend, King County, July 10 (KE. P. Van Duzee); 
Yorks, Clallam County, July 2 (EK. P. Van Duzee), [both Cal. Acad. 
Sci.]; Ilwaco, July 7 (A. Spuler), [Cole]; Longmire, Rainier Park, 
July 27 (EK. C. Van Dyke), [Cal. Acad. Sci.]. 
Oregon: ‘Ore.’ (Hy. Edwards), [Amer. Mus.]; Hood River, June 
28 to July 5 (Cole), [Cole]; Forest Grove, June 7 (L. P. Rockwood), 
[R. C. Shannon]. 
California: Carrville, Trinity County, July 1 (Van Dyke), [Cornell]; 
Fallen Leaf Lake, June 21 (A. K. Fisher), [Biol. Surv.]; Sisson, July 
26 (KE. P. Van Duzee), [Cal. Acad. Sci.]. 
THEREVA BRUNNEA, new species. 
Plate 10, fig. 120; plate 11, fig. 152; and plate 12, fig. 164. 
Male.—Length 9.5 mm. Head black, the upper frons and upper 
occiput yellow-ochraceous pollinose; face, cheeks, and lower occiput 
gray pollinose ; face, cheeks, and occiput very densely dark-yellow 
pilose, some black pile on lower corner of eye and some on upper 
part of frons, running part way down on the face; pile of vertex 
and the post-ocular bristles black. First joint of antennae distinctly 
longer than the third, the first two joints yellowish gray pollinose. 
Thorax black, mesonotum dark-brown pollinose, with a median 
black line; the form of the thoracic vittae much as in frontalis 
Say—two brownish yellow stripes on each side of a median stripe. 
Mesonotum rather densely golden-yellow reclinate pilose, with some 
erect black pile. Scutellum black, the margin yellowish pollinose, 
yellow pilose, with a few black hairs and four black bristles. Pleura 
