52 PROCEEDINGS OP THE NATIONAL. MUSEUM vol. 6i% 



margin, rather broadly interrupted at the middle, the other near the 

 base; scutellum bronzy-green; elytra with a longitudinal groove 

 along the lateral margins, which is covered with a golden-yellow pul- 

 verulence similar to that on the pronotum, the reliefs dark green^ 

 and the depressions bronzy green margined with purple; beneath 

 olive-green on the median parts, becoming purplish toward the 

 sides. 



Head nearly flat ; surface strongly rugose, the reliefs rather broad, 

 irregular, and densely granulate, the depressions filled with dense 

 whitish pulverulence and sparsely clothed with rather long, erect 

 hairs, which are more abundant along the eyes ; epistoma broadly but 

 not deeply arcuately emarginate in front, and with an obtuse tooth 

 on each side of the emargination. Pronotum one and three-fourths 

 times as wide as long, slightly narrower in front than behind, widest 

 at base; sides broadly arcuately rounded from the anterior margin 

 ,to near the base, then obliquely expanded to the posterior angles, 

 which are acute ; anterior margin arcuately emarginate, with a feebly 

 rounded median lobe; base bisinuate, with a very large rounded me- 

 dian lobe; lateral margins more or less crenulate; surface with the 

 transverse elevations densely granulose, becoming finely rugose 

 toward the sides, and with coarse punctures in the depressions, which 

 are covered by the pulverulence. Scutellum transversely oval and 

 obsoletely granulated. Elytra wider than pronotum at base, arcu- 

 ately expanded behind humeral angles, obsoletely attenuate to be- 

 hind the middle, then more strongly arcuately attenuate to the tips, 

 which are truncate and feebly emarginate; lateral margins coarsely 

 crenulate near base, but entire posteriorly; humeral angles broadly 

 rounded ; surface striato-punctate, the striae interrupted at the sides 

 and base, the punctures coarse and irregularly placed, and sparsely 

 clothed with a few short recumbent hairs, the intervals feebly con- 

 vex, and intermitted. Abdomen coarsely and sparsely punctate on 

 the median parts (posterior margin of punctures not well defined), 

 but becoming scabrous on the sides of the basal seg-ment, sparsely 

 clothed with long recumbent cinereous hairs on the median parts, 

 the pubescence denser and mixed with a whitish pulverence toward 

 the sides ; intervals finely and densely granulose ; first segment rather 

 broadly and deeply sulcate at middle ; last segment broadly rounded 

 at apex. Prosternum transversely concave along anterior margin, 

 which is broadly truncate and obsoletely sinuate at middle, the sur- 

 face coarsely rugose; prostemal process feebly convex, nearly 

 smooth, with a deep marginal groove, which is rather densely punc- 

 tate at bottom, and sparsely clothed with rather long erect hairs, the 

 sides feebly expanded behind the anterior coxal cavities, then ob- 

 liquely attenuate to the apex, which is broadly rounded. 



Length, 16-27 mm. ; width, 6-10 mm. 



