96 PROCEEDINGS OF THE NATIONAL MUSEUM vol. ii4 



the punctures often bearing whitish setae and having a small tubercle 

 at their anterior margins; surface between punctures smooth and shin- 

 ing with scattered fine punctures evident on unabraded specimens, 

 except for a narrow, nearly impuncate, very finely alutaceous area ex- 

 tending across just behind the anterior margin. Elytra with narrow 

 punctate striae; intervals with two or three hregular rows of small 

 tubercles, each with a setigerous puncture at the base, smooth sur- 

 faces of intervals finely alutaceous. 



Pygidium black, yellow, or bicolored; setigerously punctate; the 

 basal portion alutaceous, the apex smooth and shining. Ventral sur- 

 faces of thorax piceous to black with traces of iridescence; alutaceous 

 laterally, smooth and shining medially on the metasternum. Sterna 

 coarsely setigerously punctate except near the finely punctate median 

 line of metasternum ; abdominal segments with a basal row of small 

 setigerous punctures, surfaces otherwise finely alutaceous, last abdom- 

 inal segment emarginate. Forelegs gi'eatly elongated, apex of fore- 

 femur extending beyond lateral margin of pronotum; tibia as long as 

 or longer than femur, thin, slightly curved near the apex, laterally 

 quadridentate, with the margin between and above the teeth serrate 

 or denticulate; apex extended slightly over the tibial spine and bear- 

 ing a small pencil of hairs. Middle and hind legs not greatly elon- 

 gated ; the femora bearing a few coarse punctures in apical half. 



Male minors. — Length 3.6 to 3.9, width 2.3 to 2.5 mm. DifTering 

 from male majors in the following respects: Head with clypeus not 

 extended nor sharply reflexed anteriorly; the margin vaguely emar- 

 ginate or truncate medially and broadly arcuate laterally, clypeal 

 disc coarsely punctate, rugoselj^ so laterally, frons and genae with 

 scattered coarse punctures; clypeal carina barely indicated medially; 

 carina of vertex pronounced, nearly straight, slightly depressed at 

 the midline and terminating some distance from the eyes; surface 

 behind the carina with a few coarse setigerous punctures. 



Pronotum evenly moderately convex with only a trace of the ante- 

 rior median pronotal hump; surface coarsely, evenly, setigerously 

 punctate. Elytra similar to those of the male majors except that the 

 tubercles on the intervals sometimes more pronounced. Pygidium 

 quite convex with only basal third alutaceous. Ventral surface with 

 more conspicuous setae, but otherwise similar. Forelegs not elonga- 

 ted, smiilar to those of females; the foretibiae short, with the four 

 teeth smaller than in females; apical conical projection and adjacent 

 pencil of hairs both lacking. 



Females. — Length 3.7 to 5.0 mm., width 2.2 to 3.0 mm. Differing 

 from male majors in the following respects: Head with clypeus not 

 noticeably prolonged anteriorly; clypeal margin slightly reflexed, 

 broadly emarginate anteriorly, moderately angulate on either side 



