408 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxi. 



with niimerons, (|uite long", erect, black hairs; anterior niaryin some- 

 what rounded downward at the sides, the middle slightly, broadlj^ 

 emarginate and with no reflexed rim; the clypeal pubescence extends 

 upward on the t'rons to above the lev^el of the antennse, and at the 

 sides nearly as far as the level of the anterior ocellus; entire surface of 

 the frons and vertex quite thickly covered with long, black hairs; 

 frontal suture noticeal)le, forking in front of the ocelli; lateral ocelli 

 nearer each other than to the eyes; just behind the ocelli is a slightl}" 

 elevated, transverse-oval area which is somewhat l)lackish sericeous; 

 frons and vertex tinely punctured; cheeks ver}' Hat, retreating sharply 

 from the posterior margin of the eyes, very slightl}' si Iverj^- white 

 pubescent close to the edge of the eye, and quite thickly clothed with 

 long, white hairs, longer and closer below; inner margins of the eyes 

 converging downward somewhat; antennte black, the scape with a 

 tingle of ferruginous below; rather glistening; relative lengths of the 

 filament segments g^g, -^^^, f\T, j*^; mandible black, of moderate size, 

 two-toothed, with a few short hairs on its posterior face and slight 

 aciculations on its anterior face; the mandible seems to be rather short 

 to reach the base of the other when closed. 



Th<>r(i,i\ — Collar black, its anterior face almost vertical; dorsal edge 

 with a narrow band of silvery-white pubescence; the edge is not evenly 

 rounded, but somewhat raised at the middle; anterior face black seri- 

 ceous, with numerous, fairly long, grayish hairs; posterior face vertical, 

 not closely appressed against the mesonotum, though quite close to it; 

 anterior face of the collar and dorsal surface of the neck meeting at a 

 right angle; the sides of the former quite thickly covei'ed with fairly 

 long, grayish hairs; prothoracic lobe silver^^-white pubescent behind, 

 and with a few long, whitish hairs; mesonotum with a narrow, silvery- 

 white pubescent band on each side, beginning opposite the front 

 margin of the tegula and extending back to the posterior end of the 

 plate, then inward to meet the band from the other side; elsewhere 

 black, somewhat sericeous, and with numerous rather short, gray or 

 dark hairs; scutellum rather high, arched, black sericeous, with a 

 slight median longitudinal groove, rather finel>' punctured, and with 

 short gra}" hairs; postscutellum silvery-white pubescent as far laterally 

 as the groove leading to the stigma of the median segment, and with 

 quite numerous gray hairs; median segment black, its dorsum dull, 

 dead black, with numerous fine punctures and long, whitish hairs; 

 posterior end not forming a sharp angle with the dorsum; fovea 

 shallow, crescentic; posterior end sparsely silver3"-white pubescent, 

 chiefl}' behind, and not extending to the stigmatal groove; with 

 numerous long, whitish hairs; there is a band of silvery-white pubes- 

 cence extending from the hind coxa along the stigmatal groove about 

 halfwa}' to the stigma; behind and below the prothoracic lobe is a 

 silvery-white pubescent spot on the mesopleuron, and also one above 



