372 PROCEEDINGS OF THE NATIONAL MUSEUM vol. lie 



(Texas), Gnaphalium sp. (California), Gnaphalium beneolens (Cali- 

 fornia), Gutierrezia sarothrae (California), Helianthus sp. (Idaho), 

 Helianthus annuus (California), Larrea sp. (California), Polygonum 

 sp. (Arizona), Polygonum lapathvfolium (California), Salix taxifolia 

 (Arizona), Salsola kali (Utah), Sapindus saponari (Arizona), Solan 

 elegan (Aiizona), Solidago sp. (California, Oregon), Tamerix gallica 

 (California), Xanthium sjnnosum (California). 



13. Cerceris crandalli, new species 



Figures 13, 116a,b,c 



Female. — ^Length 8 mm. Black to dark amber with creamy-white 

 and light yellow markings; normally pitted and clothed with very 

 short silvery hairs. 



Head about one-fifth wider than the thorax; black except for large 

 frontal eye patches, small spot on the clypeal process, oval spots back 

 of the compound eyes, elongate patches on the vertex back of the 

 ocelli, patches on the mandibles and the scape, all of which are creamy 

 white; clypeal border with a broad rounded slight extension mesad, 

 on each side of which is a small denticle ; clypeal process scoop shaped 

 but much broader than long with the free border deeply emarginate; 

 mandibles with two distinct, centrally located denticles, the apical 

 one much the larger and more rounded; antennae normal in form, 

 scape creamy white, peduncle and flagellum amber. 



Thorax black except for two elongate patches on the pronotum, 

 two spots on the scutellum, the metanotum, patches on the pleuron 

 below the wing base, the tegulae, and the apex of the mesosternal 

 tubercle, all of which are creamy white; tegulae smooth and not 

 elevated; enclosure deeply ridged subparallel to the metanotum; 

 mesosternal tubercle medimn in size; legs dark amber to near the 

 apical ends of the femora, the remainder of the leg parts are yellow 

 to light amber except for dark patches on all tibiae; wings subhy aline, 

 cloudy at the apex. 



Abdomen black except for a small patch on tergum 1, a broad band 

 on the posterior half of tergum 2, narrow bands on terga 3 and 4, 

 and a small patch on tergum 5, aU of which are light yellow; venter 

 black, immaculate; pygidium with sides convex, basal end about one- 

 half the greatest widtli, and the apical end broadly rounded. 



Male. — Length 7 mm. Black with creamy-white to light yellow 

 markings; punctation average; pubescence short. 



Head about one-fiftti wider than the thorax; black except for large 

 frontal eye patches and the scape, which are light yellow; clypeal 



