18 Clarence E. Mickel 
and intermediate coxae black; posterior coxae yellow beneath, anterior 
trochanters blackish ferruginous; intermediate and posterior trochanters 
yellowish; femora, all yellowish (except anterior and intermediate ones 
behind more or less ferruginous to piceous, and posterior ones ferruginous 
at the tips) ; anterior and intermediate tibiae and tarsi yellow; posterior 
tibiae and tarsi yellowish in front, ferruginous behind. Wings yellowish, 
darker at the tips; stigma ferruginous. 
9. Unknown. 
Type, a male collected at Mitchell, Nebraska, August 4, 1916 
(Cot. Mickel): 
May be recognized by the yellowish wings, ferruginous and 
yellow legs, the large size, and the maculation of the propodeum. 
This may possibly prove to be the male of alceste. 
Cerceris varians sp. nov. 
2. Lengthioto1z2mm. Black, strongly punctured. Clypeus produced; 
the projection with a free apical edge but broader than long, the apex 
narrower than the base, upper surface convex, anterior margin very 
broadly and shallowly emarginate; first joint of the flagellum about one 
and one half times as long as the second; ocelli in a low triangle; frons 
above the antennae finely, longitudinally striate, interspersed with large, 
shallow, elongate punctures; mandibles at the base, clypeal projection 
above except the apical margin, lateral spots on clypeus, supraclypeal spot 
which extends onto the interantennal carina, very broad lateral marks on 
the frons extending a short distance above the insertion of the antennae, 
spot on scape beneath, and spot behind the eyes, all yellowish; flagellum 
ferruginous beneath, black above. Thorax strongly punctured, rather 
dull; enclosure of propodeum strongly longitudinally striate, the apex of 
the enclosure with a few transverse striae; small lateral spots on pro- 
notum, tegulae, metanotum, and an elongate spot on the postero-lateral 
angles of the propodeum, all yellowish. Abdomen strongly punctate; 
pygidial area broadest at the base, rounded at the tip, about two and one 
half times as long as it' is wide at the base, rugose with a few punctures 
at the base; lateral spots on tergite one, apical bands narrowed medially 
and broadened laterally on tergites two to five, small lateral spots on 
sternite two, and large lateral spots on sternites three and four, all yel- 
lowish. Coxae and trochanters black; all the femora yellow except large, 
irregular, basal areas on the anterior and intermediate femora, and the 
tips of the posterior femora black; tibiae yellow, except apices of posterior 
ones black; anterior and intermediate tarsi reddish; posterior tarsi black- 
ish. Wings subhyaline, darker in the marginal cell and at the tips; stigma 
reddish yellow. 
3d. Length 10 mm. Differs from the female as follows: no projection 
on clypeus, anterior margin sinuate; clypeus and supraclypeal area en- 
336 
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