368 PROCEEDINGS OF THE NATIONAL MUSEUM vol. iie 



denticles, the apical one much the larger; antennae normal in form, 

 scape yeUow, flagellum light below and dark above. 



Thorax, exclusive of the propodeum, is black except for two elon- 

 gate patches on the pronotmn, patches on the pleuron below the 

 wing base, and the tegulae, all of which are creamy white; propodeum 

 reddish amber except for the enclosure, which is black; tegulae smooth 

 and not elevated; enclosure heavily ridged with the ridges subparallel 

 to the metanotum and with the lateral ends curving posteriorly, mesal 

 groove present; mesosternal tubercle prominent with a trace of yellow 

 on the tip; forelegs and midlegs amber to near the apical ends of 

 the femora, the remainder of the above legs yellow and amber; hind- 

 legs light amber to the apical ends of femora, yeUow changing to 

 dark amber beyond. 



Abdomen: terga 1 and 2 reddish amber; tergum 2 with a creamy- 

 white band, terga 3 to 5 dark amber with creamy-white bands, tergum 

 6 dark amber, immaculate; pygidium broader basally but narrowing 

 and truncate at both ends; venter light amber anteriorly, becoming 

 dark posteriorly, immaculate. 



Male. — Length 6 to 7 mm. Black with creamy-white and ferru- 

 ginous markings; pmictation crowded; pubescence short. 



Head slightly wider than the thorax; black with the exception 

 of the face, small evanescent spots back of the eyes, base of mandibles, 

 and most of the scape, all of which are creamy white; clypeal border 

 with thi-ee indistinct, dentical-like extensions on the medial lobe; 

 surface of the medial lobe of the clypeus convex; hair lobes subequal 

 in width to the lateral lobes of the clypeus; mandibles without denti- 

 cles but with a very low, broad elevation medially; antennae normal 

 in form, scape creamy white, fulvous beyond the peduncle, which is 

 dark. 



Thorax black except for two widely separated patches on the pro- 

 notum, two spots on the scutellum, the metanotum, patch on the 

 pleuron, and the tegulae, all of which are creamy white (in some 

 specimens the ferruginous of the abdomen spreads more or less onto 

 the propodemn) ; tegulae relatively smooth and showing little or no 

 elevation; enclosure with heavy horizontal ridges curving laterally 

 and a prominent medial groove; mesosternal tubercles absent; fore- 

 and midlegs dark fuscous basally to beyond the center of the femora, 

 beyond which they are largely creamy white ; hindlegs are dark fuscous 

 on the coxae, more or less ferruginous on the trochanters, dark fuscous 

 over the femora except the apical end, which is creamy white, the 

 tibiae fuscous except for a large creamy-white patch and the tarsi 

 ferruginous; wings subhyaline, stigma black. 



Abdomen black except the fust tergum and basal two-thirds of the 

 second tergum, which are ferruginous, subequal bands of creamy 



