A NEW MASON-WASP FROM VIRGINIA — BEQUAERT 81 



on coxae, apices of all femora and outer sides of all tibiae, bright yel- 

 low or more or less orange-yellow. Scape, base of flagellum, mandi- 

 bles, most of legs, and lateral spots on second tergite ferruginous. The 

 edges of all yellow markings are usually more or less ferruginous, 

 particularly on the cheeks, pronotum, second and sixth tergites, and 

 most sternites. In one specimen the mesonotum has two ferruginous 

 stripes. Wings subhyaline, tinged with amber-yellow, more russet 

 toAvard costa, and with slight purple reflections. In one specimen the 

 clypeus has a median blackish spot and is partly ferruginous. 



Male. — Much like the female and equally variable in the relative 

 extent of yellow and ferruginous markings. In one specimen the 

 second tergite is mostly j^ellow, shading into orange toward the 

 middle, while several other pale markings of the body are orange 

 rather than yellow. The mandibles, tibiae, and tarsi may be more 

 extensive!}^ yellow than in the female. 



Length "^(h. + th. + t.l and 2) : 9 , 12.5 to 14 mm; <J , 11 to 12 mm; 

 of fore wing : ? , 14 to 15 mm ; $ , 11.5 to 12.5 mm. 



Bpechiiens examhied. — Colorado : Clear Creek, G,000 to 7,000 feet, 

 Jefferson County, female allotype, June 29, 1922 (George P. Engel- 

 hardt, Mus. Comp. Zool.) ; Boulder County, female, bred from a 

 muclnest (C. H. Hicks) ; Golden, 6,000 to 7,000 feet, Jefferson County, 

 female (H. H. Newcomb) ; Chimney Gulch near Golden, Jefferson 

 County, male; Custer County, female (T. D. A. Cockerell). 



New Mexico : Jemez Mountains, Sandoval Count}^, male (Wood- 

 gate) ; Las Vegas, female (Deacy). 



Wyoming: Sheridan, Sheridan County, female (Cornell Univer- 

 sity). 



Utah : Eureka, Juab County, female (T. Spaulding) ; Beaver Val- 

 ley, two females; Beaver Creek Hills, two males; Wildcat Valley, 

 male; South Creek, male; all Beaver County (George P. Engel- 

 hardt) ; Buckskin Valley, Iron County, male and female (George P. 

 Engelhardt). 



Oregon : Horse Lake, High Cascade Mountains, Lane County, 

 male (J. C. Bridwell). 



Mexico: Meadow Valley, State of Chihuahua, female (C. H. T. 

 Townsend). 



According to C. H. Hicks' observations, the typical form of O. 

 tfAnpiferus has habits similar to those of the variety macio. 



ODYNERUS TEMPIFERUS MACIO, new variety 



Characters. — Similar to O. tempiferiis., differing principally in 

 having bluish-black wings, darker bases of legs, and considerable 

 reduction of the light color markings on the head, pronotum, and 

 abdomen, which are ivory-white instead of bright yellow or some- 

 what orange-yellow. 



