88 PROCEEDINGS OF THE NATIONAL MUSEUM vol.80 



toward the side of each elytron; mandibles black, more reddish 

 toward bases ; palpi brownish yellow. 



Head quadrate in front of antennal tubercles, subequal in width 

 at top and bottom, feebly convex, broadly but not deeply depressed 

 between the antennal tubercles, which are widely separated and 

 strongly elevated, finely, densely punctate, rather densely clothed 

 with long, recumbent, whitish pubescence, which nearly conceals 

 the surface, and with a narrow, longitudinal groove extending from 

 epistoma to occiput; eyes large, deeply emarginate, and separated 

 from each other on the top by one and one-half times the width of 

 the upper lobe. Antenna slightly longer than the body (eleventh 

 joint missing), rather densely clothed with short, recumbent, whit- 

 ish pubescence, with a few long, erect, stiff black hairs intermixed, 

 the joints annulated at bases with denser, white pubescence; first 

 joint slender, subcylindrical, feebly expanded toward apex, extend- 

 ing nearly to base of pronotum, subequal in length to the third joint, 

 which is slightly longer than the fourth. 



Pronotum twice as wide as long, subequal in width at base and 

 apex, and widest at middle; sides nearly parallel, feebly sinuate, 

 and with a large, obtuse tubercle on each side just behind the middle; 

 disk moderately convex, rather even, and rather broadly, transversely 

 depressed along base; surface feebly, finely, densely punctate, with 

 a row of coarse punctures along basal depression, and rather densely, 

 irregularly clothed with moderately long, recumbent, whitish pubes- 

 cence. Scutellum broadly triangular, broadly rounded at apex, and 

 rather densely pubescent. 



Elytra four and one-half times as long as pronotum, and at base 

 slightly wider than pronotum at middle ; humeri rather strongly de- 

 veloped; sides parallel to just behind the middle, then arcuately 

 narrowed to the tips, which are conjointly, deeply, arcuately emar- 

 ginate, and acutely produced at lateral margin of each elytron ; disk 

 strongly convex, and each elytron vaguely gibbose near base; sur- 

 face coarsely, deeply, irregularly punctate, the punctures dense in 

 basal regions, but becoming sparser toward apices, sparsely clothed 

 with short, recumbent, whitish pubescence (forming inconspicuous 

 narrow, longitudinal vittae toward the sides), and with numerous 

 long, erect, black setae intermixed. 



Abdomen beneath finely, densely punctate, and rather densely 

 clothed with long, recumbent, white pubescence, which nearly con- 

 ceals the surface; last segment broadly, but not deeply, arcuately 

 emarginate at apex. Prosternal process three-fourths as wide as 

 coxal cavities, and strongly, arcuately declivous in front and behind. 

 Mesosternum broadly triangular between the coxae, abruptly, arcu- 



