tHE CANADIAN ENTOMOLOGIST. 



295 



Labrum deeply emarginate, bidentate ; mandibles simple ; antennae 

 short, the flagelkim stout, joints 2-4 wider than long ; anterior tarsi 

 in 5 with a long flexible comb ; abdomen smooth, or at most finely 

 microscopically punctate, the segments narrowly depressed at 



apex Philanthus, Fabr. 



Head large, wider than the thorax, the eyes deeply emarginate within ; 

 metanotum with a distinct, triangular, smooth area at base, but with 



a median sulcus Trachypus, Klug. 



= Simplephilus, Dahlb. 

 = Philanthocephalus, Cam. 

 North American Species. 



Subfamily I. — CerceriTKS. 

 EucERCERis, Cresson. 



E. laticei)s, Cr. 



E. flavociiictus, Cr. 



E. flavipes, Cr. 



E. zonatus. Say. 



E. rubripes, Cr. 



E. unicornis, Patt. 



E. elegans, Cr. 



E. vittatifrons, Cr. 



var. tricolor, Ckll. 



E. superbus, Cr. 



E. similis, Cr. 



E. fulviceps, Cr. 



E. montanus, Cr. 



E. insignis, Prov. 



E. bicolor, Cr. 



E. canaliculatus, Cr. 



E. cerceriformis, Cr. 

 Nectanebus, Spinola. 

 Cerceris, Latreille. 



C. bicornis, Guer., 9 



C. biungulatus, Cr. 



C. Blakei,Cr., ?. 



C. californica, Cr., ^ 



C. clypeata, Dahlb. 



o 



+ 



C. compacta, Cr., $ ^. 



C. compar, Cr., $ ^ . 



C. dentifrons, Cr., 9 . 



C. Dufourii, Gue'r., ^ . 



C. elegans. Smith, (^ . 



C. fasciola, Cr., ^ . 



C. finitima, Cr., 9 • 



C. firma, Cr., $. 



C. frontata, Say. 



C. fulvipes, Cr., 9 • 



C. fumipennis. Say., 9 6 • 



C. gnara, Cr. , ^ . 



C. imitator, Cr., 9 • 



C. insolita, Cr., (^ . 



C. jucunda, Cr., ^ . 



C. Kennicottii, Cr., (J. 



C. mandibularis, Patt. 



C. mimica, Cr., 9 6 • 



C. morata, Cr., 9 • 



C. nigrescens, Smith. 



C. occipitomaculata. Pack., ^ 



C. rufinoda, Cr., <;^ . 



C. rufopicta. Smith, ^ . 



C. sexta, Say, ,^ . 



C. unicincta, Taschb. 



C. Venator, Cr., (J. 

 ?=rbicornis, Gue'r. 



