460 PROCEEDINGS OF THE NATIONAL MUSEUM vol. ii6 



Head subequal in width to the thorax; black except two medium- 

 sized frontal eye patches, the clypeal process, spots back of the eyes, 

 and base of mandibles, all of which are dark yellow; clypeal margin 

 with a broad, blunt process medially flanked by single denticles 

 approximately opposite the attachments of the sides of the clypeal 

 process; clypeal process slightly shorter than broad, the free margin 

 deeply emarginate and the lateral points smoothl}^ rounded; mandibles 

 with two denticles connected by a carina; antennae normal in form; 

 scape and peduncle dark; flagellum dark above and fulvous below. 



Thorax with prominent points on the dorsolateral angles of the 

 pronotum; black except elongate patches on the pronotum, a divided 

 band on the scutellum, and the tegulae, all of which are dark yellow; 

 tegulae low and smooth; enclosure smooth except for a medial groove 

 and a few deep pits laterally; mesosternal tubercles absent; legs 

 black to or near the apical ends of the femora, beyond which they 

 tend to be dark on the posterior sides and yellow on the anterior 

 sides; wings subhyaline but clouded, becoming darker apicall}^ 



Abdomen with a creamy-white border along the lateral sides and 

 apical margin of tergum 1; tergum 2 black except for an evanescent 

 small patch; terga 3 to 6 dark yellow to fulvous with small dark 

 spots laterally on tergum 3; venter dark except for a medial and two 

 lateral spots on sternite 3 and wide bands on sternites 4and5; pygidium 

 with the sides slightly convex and converging from a broad apical 

 end to a narrow rounded basal end. 



Male. — Length 7 mm. Black with dark yellow, fulvous, and 

 creamy-white markings; punctation coarse; pubescence very short. 



Head black except large frontal eye patches, medial clypeal lobe, 

 spot just above the latter, small spot back of the eyes, base of the 

 mandibles, and patch on the scape, all of which are dark yellow; 

 clypeal margin extended from the medial lobe, showing a slight 

 denticle-like medial point and similar points at the lateral angles of 

 the extension; hair lobes very broad, meeting at the meson, mandibles 

 without denticles; antennae normal in form. 



Thorax with prominent points on the dorsolateral angles of the 

 pronotum; black except trace of yellow just mesad of the above 

 points on the pronotum, a divided band on the scutellum, and most 

 of the tegulae, all of which are yellow; tegulae chevron shaped and 

 with scattered pits; enclosure smooth except for a medial groove and 

 a limited number of deep pits laterally; legs black to the apical ends 

 of femora, yellow beyond except for dark areas on the posterior sides 

 of most segments; wings subhyaline but slightly clouded and darker 

 at the apex. 



Abdomen with a creamy-yellow border along the lateral sides 

 and posterior border of tergum 1, tergum 2 black, terga 3 to 7 dark 



