New Species of Sphecoidea 21 
scutellum rather sparsely punctured; mesepisterna with strong close punc- 
tures, and produced medially below, forming a very strong, blunt tooth; 
enclosure of propodeum mostly smooth, dull, with a median impressed 
line and slightly obliquely striate at the sides; sides of propodeum longi- 
tudinally striate; posterior face of propodeum with strong, close punc- 
tures; large lateral spots on pronotum, tegulae, spot on dorsal plate of 
mesepisterna, spot on mesepisterna at the projection, two spots on scu- 
tellum, and metanotum, all pale yellow. Abdomen strongly and closely 
punctured ; pygidial area pyriform, about three times as long as it is wide 
at the base, punctured basally, and with a row of stiff, brownish hairs on 
the lateral margins; median apical spot on first tergite, broad band on 
second tergite somewhat narrowed medially, rather narrow apical bands 
much broadened laterally on tergites three and four, and band slightly 
narrowed medially on tergite five, all yellow. Legs black; apices of all 
the femora, anterior and intermediate tibiae except a spot behind, poste- 
rior tibiae except apical third, and anterior and intermediate tarsi, all 
pale yellow; posterior tarsi black except the first joint in front pale yellow. 
Wings subhyaline, darker at the apex and in the marginal cell; stigma 
piceous. 
6. Length 7.5 mm. Differs from the female as follows: clypeus with- 
out a projection, tridentate medially on the anterior margin; only a me- 
_ dian yellow spot on the clypeus; no supraclypeal dot; no spots behind 
the eyes; mesepisterna not produced into a tooth; propodeal enclosure 
entirely smooth, shining; no spot on mesepisterna or on the dorsal plate 
of the mesepisterna; pygidial area about twice as long as it is wide at the 
base, strongly punctate; darkened portion of wings with a violaceous re- 
flection, more so than in the female. 
Type, a female collected at Auburn, California, on September 
20, 1916 (L. Bruner). Allotype, a male collected at the same 
time and place. 
Runs to convergens in Viereck and Cockerell’s table, but the 
mesepisterna of the female are produced, the markings are dis- 
tinctly yellow, not whitish, the pygidium is not constricted before 
the apex, and evidently the structure of the clypeal projection is 
not the same as in convergens. 
Cerceris minax sp. nov. 
9. Length 8 to 9 mm. Black, strongly punctured, sparsely pubescent. 
Clypeus produced anteriorly, forming a slightly raised free apical edge; 
frons strongly and closely punctate, with a raised line running from the 
interantennal carina to the anterior ocellus; first joint of flagellum about 
one and one third times as long as the second; ocelli in a low triangle; 
basal two thirds of mandibles, clypeus except the apical margin of the 
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