334 BULLETIN 14 5, UNITED STATES NATIONAL MUSEUM 



bronzy green, with a slight cupreous tinge, and more shining than 

 above. 



Head with the front rather wide, nearly flat, about equal in width 

 at top and bottom, the sides broadly, arcuately expanded above the 

 middle, and without a median depression; surface densely, finely 

 granulose, more or less rugose, and with only a few indistinct hairs 

 behind the epistoma; epistoma slightly transverse between the an- 

 tennae, broadly, deeply, arcuately emarginate in front, and the 

 clypeal suture indistinct ; antennae extending to middle of pronotum, 

 serrate from the fifth joint, and the outer joints as wide as long; 

 eyes large, broadly oval, and about equally rounded above and 

 beneath. 



Pronotum slightly wider than long, wider at apex than base, and 

 widest near apical third ; sides feebly, arcuately rounded from apical 

 angles to behind middle, then obliquely narrowed to the posterior 

 angles, which are rectangular; when viewed from the side the mar- 

 ginal and submarginal carinae are slightly sinuate, narrowly sepa- 

 rated anteriorly, and connected to each other at base ; anterior margin 

 strongly sinuate, and the median lobe broadly rounded ; base slightly 

 emarginate at middle of each elytron, and the median lobe broadly 

 rounded and feebly produced; disk moderately convex, broadly, 

 transversely concave posteriorly, the concavity extending forward 

 along the lateral margins, but without median depressions or pre- 

 humeral carinae; surface finely, transversely rugose, finely, sparsely 

 punctate between the rugae, and without distinct pubescence. Scu- 

 tellum strongly, transversely carinate, and the surface finely, densely 

 reticulate. 



Elytra slightly wider than pronotum at base, and equal in width 

 at base and apical third; sides feebly expanded for a short distance 

 behind base, broadly constricted in front of middle, broadly, ar- 

 cuately expanded behind the middle, then obliquely narrowed to 

 the tips, which are separate^, rather broadly rounded, and strongly 

 serrulate; sides of abdomen narrowly exposed above; disk slightly 

 flattened, feebly, broadly depressed along the sutural margins, which 

 are slightly elevated posteriorly, and with broad, moderately deep 

 basal depressions; surface finely, densely imbricate-punctate, and 

 nearly glabrous. 



Abdomen beneath finely, sparsely punctate, the punctures con- 

 nected transversely by sinuate lines, which are coarser on the basal 

 segment, and sparsely clothed with inconspicuous hairs ; first segment 

 vaguely flattened at middle; vertical portions of segments not con- 

 spicuously pubescent; pygidium without a projecting carina. Pro- 

 sternum finely, sparsely punctate, and sparsely clothed with short, 

 recumbent, whitish hairs; prosternal lobe broad, feebly declivous, 

 and broadly rounded in front; prosternal process rather broad, the 



