WASP GENTJS CERCERIS — SCULLEN 461 



yellow to fulvous with a small dark spot laterally on tergum 3- 

 venter black with wide emarginate bands of fulvous on sternites 3, 

 4, and 5; pygidium with the basal end somewhat smaller than the 

 apical end. 



C. azteca Saussure closely resembles C. dilatata Spinola in general 

 color pattern but belongs to a different group. The clypeal process 

 and the wedge-shaped pygidium of the former will readily separate 

 the females. The extremely wide hair lobes of the former will sep- 

 arate the males. 



Types. — The type female of C. azteca Saussure is at the Natur- 

 historisches Museum, Vienna, Austria, with the following label: 

 "In Agro Mexicano frequens. In partes calidas provmciae m-bis 

 Mexico prope Yautepec et Cuautla 8 9 iu Julio cepi, et in Orizaba 

 2 9 in Martio." The type male of C. seminigra Banks, from Pata- 

 gonia, Ariz., Aug. 20 (Bequaert), is at the Museum of Comparative 

 Zoology, Harvard, no. 27621. 



Distribution. — This species has been taken in limited numbers in 

 Arizona, New Mexico, and Texas, but it is more common in Mexico. 

 Specimens are as follows: 



Arizona: ? , Continental, Pima Co., July 19, 1942 (H. A. ScuUen) ; cf , Douglas, 

 Aug. 7, 1933 (W. W. Jones); &, Douglas, July 22, 1940 (W. W. Jones); ?, 

 11 mi. SW. Eloy, Pinal Co., July 16, 1953 (T. R. Haig) ; cf", Fort Thomas, Graham 

 Co., 2700 ft., Aug. 7, 1946 (H. A. Scullen) ; 9 , Tucson, June 10, 1938 (R. H. 

 Crandall) ; cf , 10 mi. E. Tucson, July 30, 1955 (G. D. Butler) ; 9 , Sahuarita, 

 July 18, 1950 (W. J. Arnold) ; 9 , Wilcox, Aug. 9, 1933 (Bryant). New mexico: 

 9, Las Cruces, July 15, 1952 (R. H. and L. D. Beamer, C. Liang, and W. La 

 Berge). Texas: 299, El Paso, July 1, 1921 (Carl Duncan); d', El Paso, 

 July 14, 1942 (H. A. Scullen). 



Prey record. — ^None. 



Plant record. — Croton (Arizona). 



49. Cerceris banksi, new species 



Figures 70, 152a,b,c 



Female. — Length 13 mm. Black with yellow markings; puncta- 

 tion and pubescence average. 



Head slightly wider than the thorax; black except large frontal eye 

 patches, dorsal surface of the clypeal process, small spot back of the 

 eye, base of the mandibles, and small patch on the scape, all of which 

 are yellow; clypeal border with a broad extension medially, to each 

 side of which is a small denticle-like elevation; clypeal process flat 

 with the lateral margins turned down, slightly broader than long, 

 and the free margin emarginate with a small medial extension; 

 mandibles with two low denticles; antennae normal in form. 



742-463—65 ^9 



