484 PROCEEDINGS OF THE NATIONAL MUSEUM vol. iie 



Female. — Length 13 to 15 mm. Black with yellow markings; 

 punctation and pubescence average. 



Head slightly wider than the thorax; black except for most of the 

 face below the antennal scrobes, small spots back of the compound 

 eyes, base of mandibles, and patch on the scape, all of which are 

 yellow; clypeal border with two very large angular denticles with a 

 depression between them; clypeal process broader than long with the 

 margin lunar shaped; mandibles with a prominent medial denticle 

 and a more basal smaller one; antennae normal in form and dark 

 amber. 



Thorax black except for two separated patches on the pronotum, 

 the metauotum, and the tegulae, all of which are yellow; tegulae low 

 and smooth; enclosure heavily ridged, becoming irregular in some 

 specimens; mesosternal tubercle absent; legs dark basally, becoming 

 yellow amber on the more apical parts of the femora and beyond; 

 wings slightly clouded. 



Abdomen with tergum 1 showing two lateral patches, tergum 2 

 with a broad band deeply emarginate anteriorly, terga 3, 4, and 5 

 with narrow bands, all of which are yellow; venter dark amber; 

 pygidium with sides slightly converging apicaUy to a truncate end. 



Male. — Indistinguishable from closely related forms. 



The extent of yellow shows variations in some specimens but no 

 more than is common for most species. 



Types. — The type female of C. halone Banks, from Falls Church, 

 Va., is at the Museum of Comparative Zoology, Harvard, no. 13777. 

 The type female of C. architis Mickel, from South Bend, Nebr., 

 July 2, 1915, taken on Melilotus alba (E. G. Anderson), and the type 

 female of C. alacris Mickel, from Mitchell, Nebr., July 21, 1916 

 (C. E. Mickel), are both at the University of Nebraska. The type 

 female of C. salome Banks, from New York (N. Banks), is at the Mu- 

 seum of Comparative Zoology, Harvard, no. 14705. The type female 

 of C. shermani Brimley, from Raleigh, N.C., July 1929, is in the 

 collection of the North Carolina State Department of Agriculture. 



Distribution. — Through the Eastern States, south to South Caro- 

 lina and west to North Dakota, Nebraska, Kansas, and Texas. 



Prey record.^ — Curculio affinis (?) (Virginia), C. confusor Hamilton 

 (Virginia), C. iowensis Casey (Minnesota, Virginia), C. nasicus Say 

 (Abbot, 1928, Minnesota; Illinois; Byers, from Virginia), C. rectus 

 (Say) (Krombein, 1958). 



Parasite record. — Hedychrum violaceum Brulle (Chrysididae) 

 (Bridwell). 



Plant record. — Melilotus alba (Nebraska), Rhus glabra (New 

 Mexico), Solidago sp. (North Carolina, Kansas), S. altissima (New 

 Jersey) , S. canadensis (New York) . 



