1947] 
Cerceridce 
31 
Face moderately broad, border of mid lobe truncate ; 
enclosure with middle groove, and coarsely transversely 
ridged ; basal segment of abdomen broader than long, al- 
most one-half the apical width of second segment ; pygid- 
ium broader at base than at tip, about three times as long 
as wide at tip, sides slightly bowed. 
Length 6 mm. 
From Tempe, Arizona, 1 August (Bequaert). Type 
M.C.Z. no. 23544. 
Cerceris (Apiratrix) conifrons Mickel 
Mickel, Trans. Amer. Ent. Soc., XLII : 410, 1916. 
Specimens from Tempe, Ariz., 31 July (Bequaert) ; 
described from Nebraska and Wyoming, having spread 
so far may extend into California. 
Cerceris (Apiratrix) cockerelli Vier. 
Viereck, Proc. Acad. Nat. Sci. Phila., 1902, 731. 
Described from La Jolla, Calif. 
Cerceris (Apiratrix) complanata Mickel 
Mickel, Nebr. Univ. Studies, XVII : 340, 1917. 
Described from Auburn, Calif. Specimens from Three 
Rivers, Calif., 12 to 14 July; and Antioch, Calif., in May 
and June. 
Cerceris (Apiratrix) snowi Bks. 
Banks, Can. Entom., 1919, 84. 
Based on males from Tucson, Ariz. (Snow), and San 
Diego Co., Calif. (Van Duzee). I have also a male from 
Jacumba, Calif., 12 to 17 August (Wheeler), and females 
from Jacumba, Calif., 12 to 17 August, which are evi- 
dently this species. 
They are larger than the males ; agree with males in 
lacking a supraclypeal mark, but the clypeus is almost 
wholly pale, the lower edge of mid lobe black, and forming 
a slightly bilobed rim ; lateral lobes with long silvery hair. 
Two small spots on scutellum (often absent in the male), 
a spot below tegulae (usually absent in male), a spot on 
the pleural spine ; basal segment with a small transverse 
line or two small spots (as in one of the male types) ; rest 
