420 PROCEEDINGS OF THE NATIONAL MUSEUM vol. lie 



Types. — The type female of C. compacta Cresson, from Illinois, is 

 at the Philadelphia Academy of Natm-al Sciences, no. 1940. The 

 type male of C. solidaginis Rohwer, from Las Cruces, N. Mex., is at 

 the U.S. National Museum, no. 28486. The type female of C. heljragi 

 Banks, from Texas, is at the Museum of Comparative Zoology, 

 Harvard, no. 10029. 



Distribution. — Throughout the eastern and central states and 

 southwest to southern California. 



Prey record. — Colaspis brunnea (Fabricius), Chrysomelidae, Clif- 

 ton, Va. (Bridwell). 



Plant record. — Alfalfa (California, Arizona), Ampelopsis arborea 

 (Texas), Asclepias sp. (New Mexico, Texas), Asclepias verticillata 

 (Iowa), Baccharis sp. (Arizona), Baccharis salicina (Texas), Bisora 

 americana (Texas), Ceanothus sp. (Virginia, North Carolina), Chernoth 

 americanus (Virginia, Illinois), Cicuta maculata (Ohio, Virginia), 

 cotton (Texas, Louisiana, Arizona, New Mexico), Croton lindheimeri 

 (Florida), Daucus carota (Ohio, Texas), Euphorbia marginata (Kansas), 

 Helianthus annuus (California), Ligustrum sp. (Florida), Melilotus 

 alba (Ohio, Illinois, Cahfornia, Utah, Arizona), parsnip (Texas), 

 peach (Georgia), Polytaenia nuttallii (Texas), Pycnanthemum (North 

 Carolina), Quercus virginiana (North Carolina), Rhus copallina 

 (Florida), Solanum elaeagnifolium (Arizona), Solidago sp. (Texas, 

 Kentucky), Tamarix gallica (Kansas, CaUfornia, Utah). 



32a. CercerisflavqfasciataflavofasciataH. S. Smith 

 Figures 41, 134a,b,c 



Cerceris flavofasciata H. S. Smith, 1908, p. 364.— Smith, J. B., 1910, p. 678.— 

 Mickel, 1916, p. 409; 1917b, p. 448.— Rau, 1922, p. 31.— Scullen, 1951, p. 

 1007.— Krombein, 1953, pp. 114, 123, 124, 125, 134; 1959, p. 197. 



Cerceris natallenus Brimley, 1927, p. 238.— Scullen, 1951, p. 1007. 



Female. — Length 14 mm. Black with yellow markings, punctation 

 normal, pubescence normal. 



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

 eye patches, a small patch between the antennae, and the basal part 

 of the mandibles, all of which are yellow; cljrpeal border with two 

 widely separated denticles, between which the margin is depressed 

 slightly but otherwise smooth; clypeal process is in the form of a very 

 broad crescent-shaped elevation equal to about seven-eighths of the 

 distance between the eyes; on the margin of the process there is 

 a lamellae consisting of two distinct oval membranes; mandibles with 

 three distinct denticles, the more apical one being very large, the 



