218 BULLETIN 63, UNITED STATES NATIONAL MUSEUM, 



beaded, and very narrowly or more or less reflexed; hase feebly arcu- 

 ate and more strongly margined, a little wider than the apex and 

 equal to the length ; apical angles acute and more or less everted ; 

 basal angles obtuse. 



Pro'pleurm smooth, more or less rugulose and nearly impunctate. 



Elytra oval, sulcate, usually less than twice as long as wide, widest 

 at the middle; Ijuhc very feebly emarginate, usually very little wider 

 than the contiguous prothoracic base; Jiut/icil obtuse and not promi- 

 nent ; sides evenly arcuate, apex more or less acute and usually very 

 slightly produced; disr- more or less convex, frequently depressed, and 

 more or less suddenly obliquely declivous posteriorly ; surface usually 

 deeply sulcate, sulci deep and about as wide as the intervals, each with 

 a series of more or less evenly and closely placed, small asperate 

 punctures ; the intervals are more or less strongh' convex, smooth and 

 shining, each with a single irregular series of distantly placed punc- 

 tures. The deflexed sides are more coarsely, irregularly punctate and 

 subsulcate. 



Ejjipleurw moderate in width, gradually narrowing from base to 

 apex, where they may be feebly dilated beneath the elytral ai)ices and 

 sightly excavated at that point; surface smooth, frequently im- 

 punctate, at other times very sparsely and finely punctulate. 



Sterna moderately punctate and rugulose. 



Parapleura' usually quite smooth and sparsely but not deeply 

 punctate. 



Abdomen horizontal, smooth, very finely punctulate and rugulose; 

 fifth segment moi-e strongly punctate. 



Leffs somewhat slender. Anterior femora armed in the sexes; 

 protibial spurs subequal, frequently the posterior appears to be just 

 the least longer and stouter than the anterior. Tarsi grooved beneath 

 and similar in the sexes. 



Male. — Somewhat narrow and elongate. Antenna^ reaching slightly 

 beyond the base of the prothorax. Length of the pronotum slightly 

 greater than the width of base and about one-fifth wider than long. 

 Elytra arcuately and obliquely declivous i)osteriorly. Abdomen 

 moderately convex fi'oni side to side. Anterior femoi'a with a 

 moderate and acute tooth at about the outer thii-d. 



Female. — More or less robust, and rather broad. Antennne reach- 

 ing to or slightly beyond the prothorax, the latter Avith the base 

 equal to the length and about one-third wider than long. Elytra 

 rather suddenly and ai-cuately declivous jwsteriorly. Abdomen 

 strongly convex. Anterior femora with a more or less obtuse tooth 

 at about the outer third. 



Genital characters.^ male. — Edeagophore of the usual oblong-ovate 

 form and small. 



