264 BULLETIN 63, UNITED STATES NATIONAL MUSEUM. 



fifth, the latter, sixth, and seventh equal and c^vlindrical, eighth tri- 

 angular, ninth and tenth transversely oval, eleventh ovate. 



Pronotuni widest a little in front of the middle and slightly wider 

 than long; disc evenl}'' and a little more than moderately convex, 

 more or less declivous at the apical angles, finely and sparsely punc- 

 tate; apex truncate to feebly emarginate, finely margined laterally; 

 skies evenly arcuate in the anterior tAvo-thirds, thence less so or some- 

 what straight and converging to base, sometimes feebly sinuate, very 

 finely margined; Jjase feebly arcuate, not coarsely margined and 

 slightly wider than the apex; apical angles small and acutely denti- 

 form, at times strongly everted ; basal angles subrectangular and not 

 I^rominent. 



Proplearce opaque, more or less finely and very sparsely i^unctate, 

 frequently the acetabular convexities are strongh' rugulose. 



Elytra oval and more or less elongate, smooth, widest at the mid- 

 dle ; hase truncate or feebly emarginate, and about equal to the con- 

 tiguous prothoracic base; liwrneri obtuse and not promineiit; sides 

 evenly arcuate, apex obtuse; disc evenly and quite strongly convex 

 or somewhat depressed, more or less arcuately declivous posteriorly; 

 surface finely punctate, jjunctures closely and quite regularly placed 

 in the rather close series, intervals with a single series of more dis- 

 tantly and regularh' placed punctures, that often become larger in 

 the outer intervals ; both more irregular and denser at the periphery. 



E pipleurcB moderately wide and gradually narrowing from base to 

 apex ; surface obsoletely and sparsely punctulate. 



Sterna nsually rather finely punctate and frequently quite strongly 

 rugose. 



Parapleuroi rather opaque, more or less sparseh', irregularl}^, and 

 rather coarsely punctate. 



Abdomen finely and sparsely punctate, punctures denser on the 

 fifth segment, the first frequently rugulose. Horizontal. 



Legs slender to moderately stout, and also moderate in length; 

 femora quite densely punctate, and all armed; the anteiior with an 

 acute tooth, the middle with a smaller and ol)tuse salient, the pos- 

 terior with a still smaller and very obtuse salient : tibial spurs rather 

 slender and moderately long and acute, the anterior subequal; tarsi 

 similar in the sexes. 



Male. — Elongate and rather narrow. Antenna; reaching to about 

 the posterior fourth of the prothorax. Elytra rather gradually 

 arcuato-obliquely declivous posteriorly. Abdomen moderately con- 

 vex and broadly impressed and with a stronger longitudinal median 

 impression. Posterior tibiie more or less arcuate in basal half. 



Female. — Elongate and rather robust, antennae usually not attain- 

 ing the posterior fourth of the ])rothorax. Elytra more or less 

 broadly oval and somewhat suddenly arcuato-obliquely declivous 



