96 BULLETTX 63, UNITED STATES NATIONAL MUSEUM. 



Head rather less than twice as wide as long, frequently feebly and 

 rather broadly impressed laterally, frontal suture obsolete or feebly 

 evident and scarcely sinuate; fr^ons feebly convex, usually more or 

 less flattened, densely and finely, sometimes a little coarser and more 

 or less confluently punctate, punctures fine on the vertex increasing 

 in coarseness to the epistoma. Antenna' long and somewhat slender, 

 feebly compressed and scarcely dilated in the outer four joints, third 

 joint as long as the next two taken together, fourth slightly longer 

 than the fifth, the latter, sixth, and seventh subequal. eighth a little 

 shorter and more or less subtriangular, ninth and tenth suborbicular, 

 eleventh short ovate. 



PronotKm subquadrate, widest at or just in front of the middle, 

 about one-third wider than long; disc moderately and quite evenly 

 convex, feebly and rather arcuately declivous laterally, rather finely 

 and densely punctate, usually more or less narrowly subgranulate 

 along the sides; apex truncate or very feebly emarginate in circular 

 arc, usually finely beaded; sides rather broadly and moderately arc- 

 uate in the anterior two-thirds, thence to the base convergent and 

 straight or feebly sinuate, marginal bead rather thin, finely reflexed 

 and visible throughout its entire length from above; base truncate or 

 feebly rounded, finely margined, and about one-sixth wider than the 

 apex, about equal to the length; apical angles obtuse, scarcely 

 rounded ; basal angles obtuse, not rounded, almost rectangular at 

 times. 



PropleniHv quite densely punctato-rugulose. 



Elytra oval, not twice as long as wide, usually Avidest at the 

 middle ; Tjat^e truncate or more or less feebly emarginate, as wide as or 

 slightly wider than the contiguous prothoracic base; hum,eri obtuse 

 or slightly prominent ; sides evenly arcuate, apex somewhat narrowly 

 rounded; disc more or less slightly depressed on the dorsum, some- 

 times slightly ogival, arcuately declivous posteriorly, and quite 

 strongly but not broadly rounded laterally, very densely and rather 

 finely muricately punctate or almost granulate, punctures more 

 simple centrally along the suture, the latter frequently impressed; 

 surface at times is obsoletely striate, the inflexed sides are inwardly 

 declivous and with the surface lines somewhat straight. 



Ejnpleuroi somewhat narrow, gradually narrowing from base to 

 apex, the superior margin is broadly and rather feebly sinuate be- 

 neath the humeri ; surface densely and subasperulately punctate. 



Sterna more or less shining and very densely punctato-rugulose. 



Parapleiirce densely punctate. 



Abdomen more or less shining, rather densely punctato-rugulose. 

 The first segment is more strongly sculptured, and the fifth quite 

 densely punctate. 



