366 



PROCEEDINGS OF THE NATIONAL MUSEUM 



tergum 6 with venter immaculate; pygidium oval with the apical end 

 only slightly narrower than the basal, both ends rounded. 



Male. — Unknown. Possibly it is being confused with the male of 

 C. convergens Viereck and Cockerell. 



C. chilopsidis Viereck and Cockerell is close to C. convergens Viereck 

 and Cockerell, from which it can be separated by the form of the 

 clypeal process and the form of the pygidium. The band on tergum 

 3 is never broken as it usually is in C. convergens Viereck and Cockerell. 



Types. — The type female of C. chilopsidis Viereck and Cockerell, 

 taken at Rincon, N. Mex. (Cockerell), July 5, at flowers of 

 Chilopsis saligna, is at the Philadelphia Academy of Natui'al Sciences, 

 no. 10375. 



Figures 7-10. — Localities of: 7, C. carrizonensis Banlcs; 8, C. chilopsidis Viereck and 

 Cockerell; 9, C. cleomae Rohwer; 10, C. cockerelli Viereck. 



Distribution. — Southern California, southern Arizona, southern 

 New Mexico, southwestern Texas to Laredo, and into Mexico, 



Prey record. — None. 



Plant record. — Alfalfa (Cahfornia), Baccharis glutinosa (Cah- 

 fornia), Chiloims saligna (New Mexico), Helianthus annuus (Arizona, 

 California), Prosopis sp. (California), Prosopis puhescens (locality not 

 recorded), Sasola pestifer (New Mexico), Stromhocarpus puhescens 

 (Texas) , Tamarix gallica (California) , Verbesina encelioides (Arizona) , 

 Wislisenia sp. (Arizona). 



9. Cerceris cleomae Rohwer 



Figure 9 



Cerceris cleomae Rohwer, 1908, p. 325. — Scullen, 1951, 1006. 



Male. — Length about 5 mm. Black with yellow and yeUowish- 

 white markings; punctation and pubescence close to the males of 

 the rufinoda-echo group. 



