New Species of Sphecoidea 19 
tirely yellow; scape entirely yellow beneath; apical joint. of antennae 
curved; propodeal enclosure not so strongly striate; narrow apical band 
on tergite six, slightly interrupted medially, yellow; pygidial area slightly 
wider at the apex than at the base, rectangular, about twice as wide as 
long, punctate; large lateral spots on sternite two; minute lateral spots 
on sternite five; intermediate coxae beneath, intermediate trochanters, and 
posterior coxae and trochanters, yellow. 
Type, a female collected at Donner Lake, Placer county, Cali- 
fornia, August 24,1916(L. Bruner). Allotype,a male collected at 
Lake Tahoe, California, August 21, 1916 (L. Bruner). Two 
female paratypes collected at Donner Lake, Placer county, Cali- 
fornia, August 24, 1916 (L. Bruner), four female paratypes col- 
lected at Lake Tahoe, August 23, 1916 (L. Bruner), and one 
male paratype collected at Donner Lake, Placer county, Califor- 
nia, August 24, 1916 (L. Bruner). 
The sculpture of the propodeal enclosure varies considerably 
in the female paratypes, in some it is strongly longitudinally 
striate as in the type while in others the enclosure is dull and 
only striate at the sides. The maculation of the body also varies ; 
in one there are no spots on the pronotum, sometimes there are 
only two small spots on the metanotum, sometimes the propodeum 
is immaculate, in one paratype the band on the second segment 
is interrupted, often the band on the fourth tergite is interrupted 
forming large lateral spots, in one paratype the fifth tergite is 
immaculate; the amount of yellow on the sternites, and black on 
the posterior femora also varies. 
May be recognized by the shape of the clypeal projection to- 
gether with the sculpture of the frons, and the maculation of the 
body although the variations of the latter must be taken into 
account. 
Cerceris munda sp. nov. 
9. Length 11 mm. Black, strongly punctured. Clypeal projection with 
a free apical edge, the projection twice as broad as long, convex above, 
broadly, shallowly and angulately emarginate on the anterior margin; 
anterior margin of the clypeus with a strong tooth immediately below the 
lateral angles of the projection; frons above the antennae finely, longi- 
tudinally striate, interspersed with moderate, elongate punctures; ocelli 
in a moderately low triangle; first joint of flagellum about one and one 
third times as long as the second; mandibles except the tips, clypeal pro- 
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