376 BULLETIN 63, UNITED STATES NATIONAL MUSEUM. 



Fronotum transverse, widest at the middle, about a half wider than 

 long; disc moderately' and evenh^ convex, not declivous laterally, 

 coarsely and irregularly punctate, impunctate areas usually present, 

 laterally the punctures are denser, becoming granulate and scabrous, 

 c.'ich puncture with an erect and very short seta for a short distance 

 from the side margins; apex truncate or feebly emarginate in cir- 

 cular arc, obsoletely beaded ; sides very evenly and rather strongly 

 arcuate to basal eighth, there feebly constricted and sinuate, thence 

 parallel or feebly convergent to the basal angles, marginal bead fine 

 and usually entire; base feebly rounded, marginal bead not evident, 

 slightly wider than the apex, equal to or slightly greater than the 

 length; apical angles obtuse and scarcely rounded; basal angles 

 obtuse or subrectangular, not at all prominent. 



Proplcurw smooth, very sparsely punctate, punctures submuricate. 

 each with a moderately sliort and erect seta, more or less regulose. 



Elyti-(i oval, about a third longer than wide, widest at the middle; 

 base sul)truncate, wider than the contiguous prothoracic base; liMtneri 

 obtusely rounded or subangulate; ><ides evenly arcuate, apex rather 

 narrowly to somewhat broadly rounded and not in the least produced ; 

 dhc moderately and evenly convex on the dorsum, strongly but not 

 very broadly rounded laterally, arcuately declivous behind ; surface 

 punctate, punctures coarse, moderately impressed, dilfused, without 

 order, sometimes a slight serial arrangement evident when viewed 

 longitudinally, punctures simpler on the dorsum, denser and muricato- 

 granulate witli a tendency to coelscence in transverse ruga? laterally 

 and on apex; the i^unctures are minutely setigerous. 



EpipleurcB shining, rather wide, gradually narroAving from base to 

 apex, superior margin more or less broadly sinuate beneath the 

 humeri ; surface subnmricately punctate. 



Stei'iia densely punctate and somewhat rugulose. 



Parapleurn' coarsely and more or less densely pimctate. 



Ahdoincn, smooth and shining, evenly and sparsely punctate, first 

 segment on and about the process densely sculptured ; fifth segment 

 more densely jnuictate at the periphery; each ])uncture with a short 

 seta. 



Legs moderate in length, somewhat stout ; anterior femora mutic ; 

 anterior tibial spurs (luite similar in the sexes, the anterior slightly 

 longer and stouter than the posterior, both acute; tarsi dissimilar in 

 the sexes. 



Male. — Somewhat robust. Antenna^ scarcely reaching beyond the 

 prothoracic base. Elytra arcuately and feebly obliquely declivous 

 posteriorly. Abdomen feebly oblicjue and moderately convex, first 

 two segments nu)re or less feebly impressed at middle. Anterior tarsi 

 with the first joint slightly thi<'kened at tip beneath and bearing a 



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