16 Clarence E. Mickel 
dian portion of posterior face), all yellowish-white; posterior lobes of 
pronotum, and borders of the maculations on pronotum, scutellum and 
propodeum, ferruginous. Abdomen ferruginous; strongly punctate; py- 
gidium about two and one fourth times as long as wide, narrowed and 
roundly truncate at the tip, transversely rugose, and the lateral margins 
with a row of stiff hairs; broad band on first tergite, emarginate ante- 
riorly and posteriorly, broad bands on tergites two, three, four and five, 
very much narrowed medially, all whitish-yellow; basal portion of tergites 
two, three, four and five, black. Legs entirely ferruginous. Wings red- 
dish-yellow, apices and marginal cell darkened; stigma ferruginous. 
dS. Unknown. 
Type, a female collected at Mitchell, Nebraska, August 4, 1916 
(C,_E.’ Mickel): . 
A very distinct species and easily recognized by the form of 
the clypeal projection and the ferruginous and yellow color. 
Cerceris alacris sp. nov. 
9. Length 13 to 14 mm. Head black, with very sparse, grayish pubes- 
cence; frons with close, strong, more or less contiguous punctures; vertex 
and genae with the punctures well separated; clypeal projection with a 
free apical edge, about one and one half times as broad as long, the 
upper surface strongly convex; ocelli in a moderately low triangle; first 
joint of flagellum about! one and one half times as long as the second; 
mandibles except the tips, clypeus (except a spot on the anterior middle 
beneath the projection and the anterior border of the projection), supra- 
clypeal area and interantennal carina, sides of the frons up to a little 
more than half way to the top of the eyes, scape beneath, two minute 
spots beneath the posterior ocelli and two large spots behind the eyes, all 
yellowish; flagellum ferruginous, joints six to eight blackish above. 
Thorax with strong, well-separated punctures and very sparse pubescence; 
enclosure of propodeum dullish, with a median impressed line and striate 
at the base and sides; band on pronotum slightly interrupted medially, 
tegulae, spot on dorsal plate of mesepisterna, band on scutellum emar- 
ginate medially posteriorly, metanotum, and two large spots on propodeum, 
almost covering the sides and the posterior face, all yellowish; spots on the 
propodeum margined with ferruginous. Abdomen black, with strong, 
well-separated punctures; pygidium about twice as long as wide, roundly 
truncate and somewhat narrowed apically, rugoso-punctate; first tergite 
with a broad yellow band, emarginate medially anteriorly and posteriorly, 
second tergite with very broad apical band, all yellowish; bands on tergites 
three, four and five much narrowed medially and widened at the sides, all 
whitish; ground color of first segment, and second sternite, ferruginous. 
Legs ferruginous; apical two thirds of anterior and intermediate femora, 
334 
Eo 
