NORTH AMERICAN COLEOPTERA. 245 



impunctate. The femora are very sparsely pubescent, the 

 hairs being very short, stout and recumbent; the tibiae 

 finely and densely spinulose. The mesosternum is finely 

 carinate in the middle anteriorly. The maxillary palpi are 

 very slender and filiform, the third joint being twice as long 

 as wide, the fourth being very slender, pointed and more 

 than twice as long as the third. 



This species differs from pldum Fauv. in elytral structure, 

 that species having all the elytral intervals equally and very 

 feebly convex, and from suhcostatum Miikl. in the shape of 

 the prothorax. 



OROBANUS Lee. 



0, mfipes n- sp. — Rather slender, cuueate; black throughout except the 

 eleventh joint of the antennae which is testaceous, and the legs which are 

 rufous throughout; integuments shining; pubescence rather long, very tine, 

 dense, recumbent, dark grayish-brown in color. Head moderate; eyes at 

 nearly their own length from the base, moderately prominent, rather finely 

 granulate; sides behind them feebly convergent and strongly arcuate, promi- 

 nent; front feebly convex, very finely and extremely feeblj' punctate; having 

 on a line slightly in advance of the middle of the eyes two deeply impressed, 

 narrow, oblique and very short caualiculate punctures; ocelli minute, circu- 

 lar; antennas moderate, slender, filiform, slightly less than one-half as long as 

 the body; joints two to six subeqiial in length, the former slightly more robust 

 and very slightly shorter; joints six to ten decreasing in length, the former 

 nearly three times as long as wide, the latter distinctly thicker and three- 

 fourths longer than wide, eleventh slender, shorter than the two preceding 

 together, finely acuminate, compressed near the tip. Prothorax cordate, 

 widest at one-third its length from the apex, where it is distinctly wider than 

 the head and very slightly wider than long; sides very moderately conver- 

 gent posteriorly, deeply and evenly incurvate throughout, strongly arcuate 

 anteriorly; basal angles slightly obtuse, very slightly rounded; base broadly,, 

 evenly and very feebly arcuate, about three-fourths as wide as the disk 

 and very slightly wider than the apex; the latter broadly, evenly and just 

 visibly emarginate; apical angles almost obsolete; disk strongly and nearly 

 evenly convex, having near the base a transverse row of small feeble erosions, 

 and at each side, just before the middle, a rather strong impression which is 

 continued posteriorly, gradually becoming more feeble and disappearing 

 before reaching the basal angles; very finely, feebly, evenly and somewhat 

 densely punctate. Elytra at base slightly wider than the prothorax, widest 

 at the apex where together they are slightly less than twice as wide as the 

 prothorax; sides nearly straight; each elytron broadly rounded behind; hu- 



